1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/gl/GrGpuGL.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,2714 @@
1.4 +/*
1.5 + * Copyright 2011 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +
1.12 +#include "GrGpuGL.h"
1.13 +#include "GrGLStencilBuffer.h"
1.14 +#include "GrGLPath.h"
1.15 +#include "GrGLShaderBuilder.h"
1.16 +#include "GrTemplates.h"
1.17 +#include "GrTypes.h"
1.18 +#include "SkStrokeRec.h"
1.19 +#include "SkTemplates.h"
1.20 +
1.21 +#define GL_CALL(X) GR_GL_CALL(this->glInterface(), X)
1.22 +#define GL_CALL_RET(RET, X) GR_GL_CALL_RET(this->glInterface(), RET, X)
1.23 +
1.24 +#define SKIP_CACHE_CHECK true
1.25 +
1.26 +#if GR_GL_CHECK_ALLOC_WITH_GET_ERROR
1.27 + #define CLEAR_ERROR_BEFORE_ALLOC(iface) GrGLClearErr(iface)
1.28 + #define GL_ALLOC_CALL(iface, call) GR_GL_CALL_NOERRCHECK(iface, call)
1.29 + #define CHECK_ALLOC_ERROR(iface) GR_GL_GET_ERROR(iface)
1.30 +#else
1.31 + #define CLEAR_ERROR_BEFORE_ALLOC(iface)
1.32 + #define GL_ALLOC_CALL(iface, call) GR_GL_CALL(iface, call)
1.33 + #define CHECK_ALLOC_ERROR(iface) GR_GL_NO_ERROR
1.34 +#endif
1.35 +
1.36 +
1.37 +///////////////////////////////////////////////////////////////////////////////
1.38 +
1.39 +static const GrGLenum gXfermodeCoeff2Blend[] = {
1.40 + GR_GL_ZERO,
1.41 + GR_GL_ONE,
1.42 + GR_GL_SRC_COLOR,
1.43 + GR_GL_ONE_MINUS_SRC_COLOR,
1.44 + GR_GL_DST_COLOR,
1.45 + GR_GL_ONE_MINUS_DST_COLOR,
1.46 + GR_GL_SRC_ALPHA,
1.47 + GR_GL_ONE_MINUS_SRC_ALPHA,
1.48 + GR_GL_DST_ALPHA,
1.49 + GR_GL_ONE_MINUS_DST_ALPHA,
1.50 + GR_GL_CONSTANT_COLOR,
1.51 + GR_GL_ONE_MINUS_CONSTANT_COLOR,
1.52 + GR_GL_CONSTANT_ALPHA,
1.53 + GR_GL_ONE_MINUS_CONSTANT_ALPHA,
1.54 +
1.55 + // extended blend coeffs
1.56 + GR_GL_SRC1_COLOR,
1.57 + GR_GL_ONE_MINUS_SRC1_COLOR,
1.58 + GR_GL_SRC1_ALPHA,
1.59 + GR_GL_ONE_MINUS_SRC1_ALPHA,
1.60 +};
1.61 +
1.62 +bool GrGpuGL::BlendCoeffReferencesConstant(GrBlendCoeff coeff) {
1.63 + static const bool gCoeffReferencesBlendConst[] = {
1.64 + false,
1.65 + false,
1.66 + false,
1.67 + false,
1.68 + false,
1.69 + false,
1.70 + false,
1.71 + false,
1.72 + false,
1.73 + false,
1.74 + true,
1.75 + true,
1.76 + true,
1.77 + true,
1.78 +
1.79 + // extended blend coeffs
1.80 + false,
1.81 + false,
1.82 + false,
1.83 + false,
1.84 + };
1.85 + return gCoeffReferencesBlendConst[coeff];
1.86 + GR_STATIC_ASSERT(kTotalGrBlendCoeffCount ==
1.87 + GR_ARRAY_COUNT(gCoeffReferencesBlendConst));
1.88 +
1.89 + GR_STATIC_ASSERT(0 == kZero_GrBlendCoeff);
1.90 + GR_STATIC_ASSERT(1 == kOne_GrBlendCoeff);
1.91 + GR_STATIC_ASSERT(2 == kSC_GrBlendCoeff);
1.92 + GR_STATIC_ASSERT(3 == kISC_GrBlendCoeff);
1.93 + GR_STATIC_ASSERT(4 == kDC_GrBlendCoeff);
1.94 + GR_STATIC_ASSERT(5 == kIDC_GrBlendCoeff);
1.95 + GR_STATIC_ASSERT(6 == kSA_GrBlendCoeff);
1.96 + GR_STATIC_ASSERT(7 == kISA_GrBlendCoeff);
1.97 + GR_STATIC_ASSERT(8 == kDA_GrBlendCoeff);
1.98 + GR_STATIC_ASSERT(9 == kIDA_GrBlendCoeff);
1.99 + GR_STATIC_ASSERT(10 == kConstC_GrBlendCoeff);
1.100 + GR_STATIC_ASSERT(11 == kIConstC_GrBlendCoeff);
1.101 + GR_STATIC_ASSERT(12 == kConstA_GrBlendCoeff);
1.102 + GR_STATIC_ASSERT(13 == kIConstA_GrBlendCoeff);
1.103 +
1.104 + GR_STATIC_ASSERT(14 == kS2C_GrBlendCoeff);
1.105 + GR_STATIC_ASSERT(15 == kIS2C_GrBlendCoeff);
1.106 + GR_STATIC_ASSERT(16 == kS2A_GrBlendCoeff);
1.107 + GR_STATIC_ASSERT(17 == kIS2A_GrBlendCoeff);
1.108 +
1.109 + // assertion for gXfermodeCoeff2Blend have to be in GrGpu scope
1.110 + GR_STATIC_ASSERT(kTotalGrBlendCoeffCount ==
1.111 + GR_ARRAY_COUNT(gXfermodeCoeff2Blend));
1.112 +}
1.113 +
1.114 +///////////////////////////////////////////////////////////////////////////////
1.115 +
1.116 +static bool gPrintStartupSpew;
1.117 +
1.118 +GrGpuGL::GrGpuGL(const GrGLContext& ctx, GrContext* context)
1.119 + : GrGpu(context)
1.120 + , fGLContext(ctx) {
1.121 +
1.122 + SkASSERT(ctx.isInitialized());
1.123 + fCaps.reset(SkRef(ctx.caps()));
1.124 +
1.125 + fHWBoundTextures.reset(this->glCaps().maxFragmentTextureUnits());
1.126 + fHWTexGenSettings.reset(this->glCaps().maxFixedFunctionTextureCoords());
1.127 +
1.128 + GrGLClearErr(fGLContext.interface());
1.129 + if (gPrintStartupSpew) {
1.130 + const GrGLubyte* vendor;
1.131 + const GrGLubyte* renderer;
1.132 + const GrGLubyte* version;
1.133 + GL_CALL_RET(vendor, GetString(GR_GL_VENDOR));
1.134 + GL_CALL_RET(renderer, GetString(GR_GL_RENDERER));
1.135 + GL_CALL_RET(version, GetString(GR_GL_VERSION));
1.136 + GrPrintf("------------------------- create GrGpuGL %p --------------\n",
1.137 + this);
1.138 + GrPrintf("------ VENDOR %s\n", vendor);
1.139 + GrPrintf("------ RENDERER %s\n", renderer);
1.140 + GrPrintf("------ VERSION %s\n", version);
1.141 + GrPrintf("------ EXTENSIONS\n");
1.142 +#if 0 // TODO: Reenable this after GrGLInterface's extensions can be accessed safely.
1.143 + ctx.extensions().print();
1.144 +#endif
1.145 + GrPrintf("\n");
1.146 + GrPrintf(this->glCaps().dump().c_str());
1.147 + }
1.148 +
1.149 + fProgramCache = SkNEW_ARGS(ProgramCache, (this));
1.150 +
1.151 + SkASSERT(this->glCaps().maxVertexAttributes() >= GrDrawState::kMaxVertexAttribCnt);
1.152 +
1.153 + fLastSuccessfulStencilFmtIdx = 0;
1.154 + fHWProgramID = 0;
1.155 +}
1.156 +
1.157 +GrGpuGL::~GrGpuGL() {
1.158 + if (0 != fHWProgramID) {
1.159 + // detach the current program so there is no confusion on OpenGL's part
1.160 + // that we want it to be deleted
1.161 + SkASSERT(fHWProgramID == fCurrentProgram->programID());
1.162 + GL_CALL(UseProgram(0));
1.163 + }
1.164 +
1.165 + delete fProgramCache;
1.166 +
1.167 + // This must be called by before the GrDrawTarget destructor
1.168 + this->releaseGeometry();
1.169 + // This subclass must do this before the base class destructor runs
1.170 + // since we will unref the GrGLInterface.
1.171 + this->releaseResources();
1.172 +}
1.173 +
1.174 +///////////////////////////////////////////////////////////////////////////////
1.175 +
1.176 +
1.177 +GrPixelConfig GrGpuGL::preferredReadPixelsConfig(GrPixelConfig readConfig,
1.178 + GrPixelConfig surfaceConfig) const {
1.179 + if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && kRGBA_8888_GrPixelConfig == readConfig) {
1.180 + return kBGRA_8888_GrPixelConfig;
1.181 + } else if (this->glContext().isMesa() &&
1.182 + GrBytesPerPixel(readConfig) == 4 &&
1.183 + GrPixelConfigSwapRAndB(readConfig) == surfaceConfig) {
1.184 + // Mesa 3D takes a slow path on when reading back BGRA from an RGBA surface and vice-versa.
1.185 + // Perhaps this should be guarded by some compiletime or runtime check.
1.186 + return surfaceConfig;
1.187 + } else if (readConfig == kBGRA_8888_GrPixelConfig &&
1.188 + !this->glCaps().readPixelsSupported(this->glInterface(),
1.189 + GR_GL_BGRA, GR_GL_UNSIGNED_BYTE)) {
1.190 + return kRGBA_8888_GrPixelConfig;
1.191 + } else {
1.192 + return readConfig;
1.193 + }
1.194 +}
1.195 +
1.196 +GrPixelConfig GrGpuGL::preferredWritePixelsConfig(GrPixelConfig writeConfig,
1.197 + GrPixelConfig surfaceConfig) const {
1.198 + if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && kRGBA_8888_GrPixelConfig == writeConfig) {
1.199 + return kBGRA_8888_GrPixelConfig;
1.200 + } else {
1.201 + return writeConfig;
1.202 + }
1.203 +}
1.204 +
1.205 +bool GrGpuGL::canWriteTexturePixels(const GrTexture* texture, GrPixelConfig srcConfig) const {
1.206 + if (kIndex_8_GrPixelConfig == srcConfig || kIndex_8_GrPixelConfig == texture->config()) {
1.207 + return false;
1.208 + }
1.209 + if (srcConfig != texture->config() && kGLES_GrGLStandard == this->glStandard()) {
1.210 + // In general ES2 requires the internal format of the texture and the format of the src
1.211 + // pixels to match. However, It may or may not be possible to upload BGRA data to a RGBA
1.212 + // texture. It depends upon which extension added BGRA. The Apple extension allows it
1.213 + // (BGRA's internal format is RGBA) while the EXT extension does not (BGRA is its own
1.214 + // internal format).
1.215 + if (this->glCaps().bgraFormatSupport() &&
1.216 + !this->glCaps().bgraIsInternalFormat() &&
1.217 + kBGRA_8888_GrPixelConfig == srcConfig &&
1.218 + kRGBA_8888_GrPixelConfig == texture->config()) {
1.219 + return true;
1.220 + } else {
1.221 + return false;
1.222 + }
1.223 + } else {
1.224 + return true;
1.225 + }
1.226 +}
1.227 +
1.228 +bool GrGpuGL::fullReadPixelsIsFasterThanPartial() const {
1.229 + return SkToBool(GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL);
1.230 +}
1.231 +
1.232 +void GrGpuGL::onResetContext(uint32_t resetBits) {
1.233 + // we don't use the zb at all
1.234 + if (resetBits & kMisc_GrGLBackendState) {
1.235 + GL_CALL(Disable(GR_GL_DEPTH_TEST));
1.236 + GL_CALL(DepthMask(GR_GL_FALSE));
1.237 +
1.238 + fHWDrawFace = GrDrawState::kInvalid_DrawFace;
1.239 + fHWDitherEnabled = kUnknown_TriState;
1.240 +
1.241 + if (kGL_GrGLStandard == this->glStandard()) {
1.242 + // Desktop-only state that we never change
1.243 + if (!this->glCaps().isCoreProfile()) {
1.244 + GL_CALL(Disable(GR_GL_POINT_SMOOTH));
1.245 + GL_CALL(Disable(GR_GL_LINE_SMOOTH));
1.246 + GL_CALL(Disable(GR_GL_POLYGON_SMOOTH));
1.247 + GL_CALL(Disable(GR_GL_POLYGON_STIPPLE));
1.248 + GL_CALL(Disable(GR_GL_COLOR_LOGIC_OP));
1.249 + GL_CALL(Disable(GR_GL_INDEX_LOGIC_OP));
1.250 + }
1.251 + // The windows NVIDIA driver has GL_ARB_imaging in the extension string when using a
1.252 + // core profile. This seems like a bug since the core spec removes any mention of
1.253 + // GL_ARB_imaging.
1.254 + if (this->glCaps().imagingSupport() && !this->glCaps().isCoreProfile()) {
1.255 + GL_CALL(Disable(GR_GL_COLOR_TABLE));
1.256 + }
1.257 + GL_CALL(Disable(GR_GL_POLYGON_OFFSET_FILL));
1.258 + // Since ES doesn't support glPointSize at all we always use the VS to
1.259 + // set the point size
1.260 + GL_CALL(Enable(GR_GL_VERTEX_PROGRAM_POINT_SIZE));
1.261 +
1.262 + // We should set glPolygonMode(FRONT_AND_BACK,FILL) here, too. It isn't
1.263 + // currently part of our gl interface. There are probably others as
1.264 + // well.
1.265 + }
1.266 + fHWWriteToColor = kUnknown_TriState;
1.267 + // we only ever use lines in hairline mode
1.268 + GL_CALL(LineWidth(1));
1.269 + }
1.270 +
1.271 + if (resetBits & kAA_GrGLBackendState) {
1.272 + fHWAAState.invalidate();
1.273 + }
1.274 +
1.275 + fHWActiveTextureUnitIdx = -1; // invalid
1.276 +
1.277 + if (resetBits & kTextureBinding_GrGLBackendState) {
1.278 + for (int s = 0; s < fHWBoundTextures.count(); ++s) {
1.279 + fHWBoundTextures[s] = NULL;
1.280 + }
1.281 + }
1.282 +
1.283 + if (resetBits & kBlend_GrGLBackendState) {
1.284 + fHWBlendState.invalidate();
1.285 + }
1.286 +
1.287 + if (resetBits & kView_GrGLBackendState) {
1.288 + fHWScissorSettings.invalidate();
1.289 + fHWViewport.invalidate();
1.290 + }
1.291 +
1.292 + if (resetBits & kStencil_GrGLBackendState) {
1.293 + fHWStencilSettings.invalidate();
1.294 + fHWStencilTestEnabled = kUnknown_TriState;
1.295 + }
1.296 +
1.297 + // Vertex
1.298 + if (resetBits & kVertex_GrGLBackendState) {
1.299 + fHWGeometryState.invalidate();
1.300 + }
1.301 +
1.302 + if (resetBits & kRenderTarget_GrGLBackendState) {
1.303 + fHWBoundRenderTarget = NULL;
1.304 + }
1.305 +
1.306 + if (resetBits & (kFixedFunction_GrGLBackendState | kPathRendering_GrGLBackendState)) {
1.307 + if (this->glCaps().fixedFunctionSupport()) {
1.308 + fHWProjectionMatrixState.invalidate();
1.309 + // we don't use the model view matrix.
1.310 + GL_CALL(MatrixMode(GR_GL_MODELVIEW));
1.311 + GL_CALL(LoadIdentity());
1.312 +
1.313 + for (int i = 0; i < this->glCaps().maxFixedFunctionTextureCoords(); ++i) {
1.314 + GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + i));
1.315 + GL_CALL(Disable(GR_GL_TEXTURE_GEN_S));
1.316 + GL_CALL(Disable(GR_GL_TEXTURE_GEN_T));
1.317 + GL_CALL(Disable(GR_GL_TEXTURE_GEN_Q));
1.318 + GL_CALL(Disable(GR_GL_TEXTURE_GEN_R));
1.319 + if (this->caps()->pathRenderingSupport()) {
1.320 + GL_CALL(PathTexGen(GR_GL_TEXTURE0 + i, GR_GL_NONE, 0, NULL));
1.321 + }
1.322 + fHWTexGenSettings[i].fMode = GR_GL_NONE;
1.323 + fHWTexGenSettings[i].fNumComponents = 0;
1.324 + }
1.325 + fHWActiveTexGenSets = 0;
1.326 + }
1.327 + if (this->caps()->pathRenderingSupport()) {
1.328 + fHWPathStencilSettings.invalidate();
1.329 + }
1.330 + }
1.331 +
1.332 + // we assume these values
1.333 + if (resetBits & kPixelStore_GrGLBackendState) {
1.334 + if (this->glCaps().unpackRowLengthSupport()) {
1.335 + GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
1.336 + }
1.337 + if (this->glCaps().packRowLengthSupport()) {
1.338 + GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0));
1.339 + }
1.340 + if (this->glCaps().unpackFlipYSupport()) {
1.341 + GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE));
1.342 + }
1.343 + if (this->glCaps().packFlipYSupport()) {
1.344 + GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, GR_GL_FALSE));
1.345 + }
1.346 + }
1.347 +
1.348 + if (resetBits & kProgram_GrGLBackendState) {
1.349 + fHWProgramID = 0;
1.350 + fSharedGLProgramState.invalidate();
1.351 + }
1.352 +}
1.353 +
1.354 +namespace {
1.355 +
1.356 +GrSurfaceOrigin resolve_origin(GrSurfaceOrigin origin, bool renderTarget) {
1.357 + // By default, GrRenderTargets are GL's normal orientation so that they
1.358 + // can be drawn to by the outside world without the client having
1.359 + // to render upside down.
1.360 + if (kDefault_GrSurfaceOrigin == origin) {
1.361 + return renderTarget ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin;
1.362 + } else {
1.363 + return origin;
1.364 + }
1.365 +}
1.366 +
1.367 +}
1.368 +
1.369 +GrTexture* GrGpuGL::onWrapBackendTexture(const GrBackendTextureDesc& desc) {
1.370 + if (!this->configToGLFormats(desc.fConfig, false, NULL, NULL, NULL)) {
1.371 + return NULL;
1.372 + }
1.373 +
1.374 + if (0 == desc.fTextureHandle) {
1.375 + return NULL;
1.376 + }
1.377 +
1.378 + int maxSize = this->caps()->maxTextureSize();
1.379 + if (desc.fWidth > maxSize || desc.fHeight > maxSize) {
1.380 + return NULL;
1.381 + }
1.382 +
1.383 + GrGLTexture::Desc glTexDesc;
1.384 + // next line relies on GrBackendTextureDesc's flags matching GrTexture's
1.385 + glTexDesc.fFlags = (GrTextureFlags) desc.fFlags;
1.386 + glTexDesc.fWidth = desc.fWidth;
1.387 + glTexDesc.fHeight = desc.fHeight;
1.388 + glTexDesc.fConfig = desc.fConfig;
1.389 + glTexDesc.fSampleCnt = desc.fSampleCnt;
1.390 + glTexDesc.fTextureID = static_cast<GrGLuint>(desc.fTextureHandle);
1.391 + glTexDesc.fIsWrapped = true;
1.392 + bool renderTarget = SkToBool(desc.fFlags & kRenderTarget_GrBackendTextureFlag);
1.393 + // FIXME: this should be calling resolve_origin(), but Chrome code is currently
1.394 + // assuming the old behaviour, which is that backend textures are always
1.395 + // BottomLeft, even for non-RT's. Once Chrome is fixed, change this to:
1.396 + // glTexDesc.fOrigin = resolve_origin(desc.fOrigin, renderTarget);
1.397 + if (kDefault_GrSurfaceOrigin == desc.fOrigin) {
1.398 + glTexDesc.fOrigin = kBottomLeft_GrSurfaceOrigin;
1.399 + } else {
1.400 + glTexDesc.fOrigin = desc.fOrigin;
1.401 + }
1.402 +
1.403 + GrGLTexture* texture = NULL;
1.404 + if (renderTarget) {
1.405 + GrGLRenderTarget::Desc glRTDesc;
1.406 + glRTDesc.fRTFBOID = 0;
1.407 + glRTDesc.fTexFBOID = 0;
1.408 + glRTDesc.fMSColorRenderbufferID = 0;
1.409 + glRTDesc.fConfig = desc.fConfig;
1.410 + glRTDesc.fSampleCnt = desc.fSampleCnt;
1.411 + glRTDesc.fOrigin = glTexDesc.fOrigin;
1.412 + glRTDesc.fCheckAllocation = false;
1.413 + if (!this->createRenderTargetObjects(glTexDesc.fWidth,
1.414 + glTexDesc.fHeight,
1.415 + glTexDesc.fTextureID,
1.416 + &glRTDesc)) {
1.417 + return NULL;
1.418 + }
1.419 + texture = SkNEW_ARGS(GrGLTexture, (this, glTexDesc, glRTDesc));
1.420 + } else {
1.421 + texture = SkNEW_ARGS(GrGLTexture, (this, glTexDesc));
1.422 + }
1.423 + if (NULL == texture) {
1.424 + return NULL;
1.425 + }
1.426 +
1.427 + return texture;
1.428 +}
1.429 +
1.430 +GrRenderTarget* GrGpuGL::onWrapBackendRenderTarget(const GrBackendRenderTargetDesc& desc) {
1.431 + GrGLRenderTarget::Desc glDesc;
1.432 + glDesc.fConfig = desc.fConfig;
1.433 + glDesc.fRTFBOID = static_cast<GrGLuint>(desc.fRenderTargetHandle);
1.434 + glDesc.fMSColorRenderbufferID = 0;
1.435 + glDesc.fTexFBOID = GrGLRenderTarget::kUnresolvableFBOID;
1.436 + glDesc.fSampleCnt = desc.fSampleCnt;
1.437 + glDesc.fIsWrapped = true;
1.438 + glDesc.fCheckAllocation = false;
1.439 +
1.440 + glDesc.fOrigin = resolve_origin(desc.fOrigin, true);
1.441 + GrGLIRect viewport;
1.442 + viewport.fLeft = 0;
1.443 + viewport.fBottom = 0;
1.444 + viewport.fWidth = desc.fWidth;
1.445 + viewport.fHeight = desc.fHeight;
1.446 +
1.447 + GrRenderTarget* tgt = SkNEW_ARGS(GrGLRenderTarget,
1.448 + (this, glDesc, viewport));
1.449 + if (desc.fStencilBits) {
1.450 + GrGLStencilBuffer::Format format;
1.451 + format.fInternalFormat = GrGLStencilBuffer::kUnknownInternalFormat;
1.452 + format.fPacked = false;
1.453 + format.fStencilBits = desc.fStencilBits;
1.454 + format.fTotalBits = desc.fStencilBits;
1.455 + static const bool kIsSBWrapped = false;
1.456 + GrGLStencilBuffer* sb = SkNEW_ARGS(GrGLStencilBuffer,
1.457 + (this,
1.458 + kIsSBWrapped,
1.459 + 0,
1.460 + desc.fWidth,
1.461 + desc.fHeight,
1.462 + desc.fSampleCnt,
1.463 + format));
1.464 + tgt->setStencilBuffer(sb);
1.465 + sb->unref();
1.466 + }
1.467 + return tgt;
1.468 +}
1.469 +
1.470 +////////////////////////////////////////////////////////////////////////////////
1.471 +
1.472 +bool GrGpuGL::onWriteTexturePixels(GrTexture* texture,
1.473 + int left, int top, int width, int height,
1.474 + GrPixelConfig config, const void* buffer,
1.475 + size_t rowBytes) {
1.476 + if (NULL == buffer) {
1.477 + return false;
1.478 + }
1.479 + GrGLTexture* glTex = static_cast<GrGLTexture*>(texture);
1.480 +
1.481 + this->setScratchTextureUnit();
1.482 + GL_CALL(BindTexture(GR_GL_TEXTURE_2D, glTex->textureID()));
1.483 + GrGLTexture::Desc desc;
1.484 + desc.fFlags = glTex->desc().fFlags;
1.485 + desc.fWidth = glTex->width();
1.486 + desc.fHeight = glTex->height();
1.487 + desc.fConfig = glTex->config();
1.488 + desc.fSampleCnt = glTex->desc().fSampleCnt;
1.489 + desc.fTextureID = glTex->textureID();
1.490 + desc.fOrigin = glTex->origin();
1.491 +
1.492 + if (this->uploadTexData(desc, false,
1.493 + left, top, width, height,
1.494 + config, buffer, rowBytes)) {
1.495 + texture->dirtyMipMaps(true);
1.496 + return true;
1.497 + } else {
1.498 + return false;
1.499 + }
1.500 +}
1.501 +
1.502 +namespace {
1.503 +bool adjust_pixel_ops_params(int surfaceWidth,
1.504 + int surfaceHeight,
1.505 + size_t bpp,
1.506 + int* left, int* top, int* width, int* height,
1.507 + const void** data,
1.508 + size_t* rowBytes) {
1.509 + if (!*rowBytes) {
1.510 + *rowBytes = *width * bpp;
1.511 + }
1.512 +
1.513 + SkIRect subRect = SkIRect::MakeXYWH(*left, *top, *width, *height);
1.514 + SkIRect bounds = SkIRect::MakeWH(surfaceWidth, surfaceHeight);
1.515 +
1.516 + if (!subRect.intersect(bounds)) {
1.517 + return false;
1.518 + }
1.519 + *data = reinterpret_cast<const void*>(reinterpret_cast<intptr_t>(*data) +
1.520 + (subRect.fTop - *top) * *rowBytes + (subRect.fLeft - *left) * bpp);
1.521 +
1.522 + *left = subRect.fLeft;
1.523 + *top = subRect.fTop;
1.524 + *width = subRect.width();
1.525 + *height = subRect.height();
1.526 + return true;
1.527 +}
1.528 +
1.529 +GrGLenum check_alloc_error(const GrTextureDesc& desc, const GrGLInterface* interface) {
1.530 + if (SkToBool(desc.fFlags & kCheckAllocation_GrTextureFlagBit)) {
1.531 + return GR_GL_GET_ERROR(interface);
1.532 + } else {
1.533 + return CHECK_ALLOC_ERROR(interface);
1.534 + }
1.535 +}
1.536 +
1.537 +}
1.538 +
1.539 +bool GrGpuGL::uploadTexData(const GrGLTexture::Desc& desc,
1.540 + bool isNewTexture,
1.541 + int left, int top, int width, int height,
1.542 + GrPixelConfig dataConfig,
1.543 + const void* data,
1.544 + size_t rowBytes) {
1.545 + SkASSERT(NULL != data || isNewTexture);
1.546 +
1.547 + size_t bpp = GrBytesPerPixel(dataConfig);
1.548 + if (!adjust_pixel_ops_params(desc.fWidth, desc.fHeight, bpp, &left, &top,
1.549 + &width, &height, &data, &rowBytes)) {
1.550 + return false;
1.551 + }
1.552 + size_t trimRowBytes = width * bpp;
1.553 +
1.554 + // in case we need a temporary, trimmed copy of the src pixels
1.555 + SkAutoSMalloc<128 * 128> tempStorage;
1.556 +
1.557 + // paletted textures cannot be partially updated
1.558 + // We currently lazily create MIPMAPs when the we see a draw with
1.559 + // GrTextureParams::kMipMap_FilterMode. Using texture storage requires that the
1.560 + // MIP levels are all created when the texture is created. So for now we don't use
1.561 + // texture storage.
1.562 + bool useTexStorage = false &&
1.563 + isNewTexture &&
1.564 + desc.fConfig != kIndex_8_GrPixelConfig &&
1.565 + this->glCaps().texStorageSupport();
1.566 +
1.567 + if (useTexStorage && kGL_GrGLStandard == this->glStandard()) {
1.568 + // 565 is not a sized internal format on desktop GL. So on desktop with
1.569 + // 565 we always use an unsized internal format to let the system pick
1.570 + // the best sized format to convert the 565 data to. Since TexStorage
1.571 + // only allows sized internal formats we will instead use TexImage2D.
1.572 + useTexStorage = desc.fConfig != kRGB_565_GrPixelConfig;
1.573 + }
1.574 +
1.575 + GrGLenum internalFormat;
1.576 + GrGLenum externalFormat;
1.577 + GrGLenum externalType;
1.578 + // glTexStorage requires sized internal formats on both desktop and ES. ES2 requires an unsized
1.579 + // format for glTexImage, unlike ES3 and desktop. However, we allow the driver to decide the
1.580 + // size of the internal format whenever possible and so only use a sized internal format when
1.581 + // using texture storage.
1.582 + if (!this->configToGLFormats(dataConfig, useTexStorage, &internalFormat,
1.583 + &externalFormat, &externalType)) {
1.584 + return false;
1.585 + }
1.586 +
1.587 + if (!isNewTexture && GR_GL_PALETTE8_RGBA8 == internalFormat) {
1.588 + // paletted textures cannot be updated
1.589 + return false;
1.590 + }
1.591 +
1.592 + /*
1.593 + * check whether to allocate a temporary buffer for flipping y or
1.594 + * because our srcData has extra bytes past each row. If so, we need
1.595 + * to trim those off here, since GL ES may not let us specify
1.596 + * GL_UNPACK_ROW_LENGTH.
1.597 + */
1.598 + bool restoreGLRowLength = false;
1.599 + bool swFlipY = false;
1.600 + bool glFlipY = false;
1.601 + if (NULL != data) {
1.602 + if (kBottomLeft_GrSurfaceOrigin == desc.fOrigin) {
1.603 + if (this->glCaps().unpackFlipYSupport()) {
1.604 + glFlipY = true;
1.605 + } else {
1.606 + swFlipY = true;
1.607 + }
1.608 + }
1.609 + if (this->glCaps().unpackRowLengthSupport() && !swFlipY) {
1.610 + // can't use this for flipping, only non-neg values allowed. :(
1.611 + if (rowBytes != trimRowBytes) {
1.612 + GrGLint rowLength = static_cast<GrGLint>(rowBytes / bpp);
1.613 + GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowLength));
1.614 + restoreGLRowLength = true;
1.615 + }
1.616 + } else {
1.617 + if (trimRowBytes != rowBytes || swFlipY) {
1.618 + // copy data into our new storage, skipping the trailing bytes
1.619 + size_t trimSize = height * trimRowBytes;
1.620 + const char* src = (const char*)data;
1.621 + if (swFlipY) {
1.622 + src += (height - 1) * rowBytes;
1.623 + }
1.624 + char* dst = (char*)tempStorage.reset(trimSize);
1.625 + for (int y = 0; y < height; y++) {
1.626 + memcpy(dst, src, trimRowBytes);
1.627 + if (swFlipY) {
1.628 + src -= rowBytes;
1.629 + } else {
1.630 + src += rowBytes;
1.631 + }
1.632 + dst += trimRowBytes;
1.633 + }
1.634 + // now point data to our copied version
1.635 + data = tempStorage.get();
1.636 + }
1.637 + }
1.638 + if (glFlipY) {
1.639 + GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_TRUE));
1.640 + }
1.641 + GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT, static_cast<GrGLint>(bpp)));
1.642 + }
1.643 + bool succeeded = true;
1.644 + if (isNewTexture &&
1.645 + 0 == left && 0 == top &&
1.646 + desc.fWidth == width && desc.fHeight == height) {
1.647 + CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
1.648 + if (useTexStorage) {
1.649 + // We never resize or change formats of textures.
1.650 + GL_ALLOC_CALL(this->glInterface(),
1.651 + TexStorage2D(GR_GL_TEXTURE_2D,
1.652 + 1, // levels
1.653 + internalFormat,
1.654 + desc.fWidth, desc.fHeight));
1.655 + } else {
1.656 + if (GR_GL_PALETTE8_RGBA8 == internalFormat) {
1.657 + GrGLsizei imageSize = desc.fWidth * desc.fHeight +
1.658 + kGrColorTableSize;
1.659 + GL_ALLOC_CALL(this->glInterface(),
1.660 + CompressedTexImage2D(GR_GL_TEXTURE_2D,
1.661 + 0, // level
1.662 + internalFormat,
1.663 + desc.fWidth, desc.fHeight,
1.664 + 0, // border
1.665 + imageSize,
1.666 + data));
1.667 + } else {
1.668 + GL_ALLOC_CALL(this->glInterface(),
1.669 + TexImage2D(GR_GL_TEXTURE_2D,
1.670 + 0, // level
1.671 + internalFormat,
1.672 + desc.fWidth, desc.fHeight,
1.673 + 0, // border
1.674 + externalFormat, externalType,
1.675 + data));
1.676 + }
1.677 + }
1.678 + GrGLenum error = check_alloc_error(desc, this->glInterface());
1.679 + if (error != GR_GL_NO_ERROR) {
1.680 + succeeded = false;
1.681 + } else {
1.682 + // if we have data and we used TexStorage to create the texture, we
1.683 + // now upload with TexSubImage.
1.684 + if (NULL != data && useTexStorage) {
1.685 + GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D,
1.686 + 0, // level
1.687 + left, top,
1.688 + width, height,
1.689 + externalFormat, externalType,
1.690 + data));
1.691 + }
1.692 + }
1.693 + } else {
1.694 + if (swFlipY || glFlipY) {
1.695 + top = desc.fHeight - (top + height);
1.696 + }
1.697 + GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D,
1.698 + 0, // level
1.699 + left, top,
1.700 + width, height,
1.701 + externalFormat, externalType, data));
1.702 + }
1.703 +
1.704 + if (restoreGLRowLength) {
1.705 + SkASSERT(this->glCaps().unpackRowLengthSupport());
1.706 + GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
1.707 + }
1.708 + if (glFlipY) {
1.709 + GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE));
1.710 + }
1.711 + return succeeded;
1.712 +}
1.713 +
1.714 +static bool renderbuffer_storage_msaa(GrGLContext& ctx,
1.715 + int sampleCount,
1.716 + GrGLenum format,
1.717 + int width, int height) {
1.718 + CLEAR_ERROR_BEFORE_ALLOC(ctx.interface());
1.719 + SkASSERT(GrGLCaps::kNone_MSFBOType != ctx.caps()->msFBOType());
1.720 + switch (ctx.caps()->msFBOType()) {
1.721 + case GrGLCaps::kDesktop_ARB_MSFBOType:
1.722 + case GrGLCaps::kDesktop_EXT_MSFBOType:
1.723 + case GrGLCaps::kES_3_0_MSFBOType:
1.724 + GL_ALLOC_CALL(ctx.interface(),
1.725 + RenderbufferStorageMultisample(GR_GL_RENDERBUFFER,
1.726 + sampleCount,
1.727 + format,
1.728 + width, height));
1.729 + break;
1.730 + case GrGLCaps::kES_Apple_MSFBOType:
1.731 + GL_ALLOC_CALL(ctx.interface(),
1.732 + RenderbufferStorageMultisampleES2APPLE(GR_GL_RENDERBUFFER,
1.733 + sampleCount,
1.734 + format,
1.735 + width, height));
1.736 + break;
1.737 + case GrGLCaps::kES_EXT_MsToTexture_MSFBOType:
1.738 + case GrGLCaps::kES_IMG_MsToTexture_MSFBOType:
1.739 + GL_ALLOC_CALL(ctx.interface(),
1.740 + RenderbufferStorageMultisampleES2EXT(GR_GL_RENDERBUFFER,
1.741 + sampleCount,
1.742 + format,
1.743 + width, height));
1.744 + break;
1.745 + case GrGLCaps::kNone_MSFBOType:
1.746 + GrCrash("Shouldn't be here if we don't support multisampled renderbuffers.");
1.747 + break;
1.748 + }
1.749 + return (GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(ctx.interface()));;
1.750 +}
1.751 +
1.752 +bool GrGpuGL::createRenderTargetObjects(int width, int height,
1.753 + GrGLuint texID,
1.754 + GrGLRenderTarget::Desc* desc) {
1.755 + desc->fMSColorRenderbufferID = 0;
1.756 + desc->fRTFBOID = 0;
1.757 + desc->fTexFBOID = 0;
1.758 + desc->fIsWrapped = false;
1.759 +
1.760 + GrGLenum status;
1.761 +
1.762 + GrGLenum msColorFormat = 0; // suppress warning
1.763 +
1.764 + if (desc->fSampleCnt > 0 && GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType()) {
1.765 + goto FAILED;
1.766 + }
1.767 +
1.768 + GL_CALL(GenFramebuffers(1, &desc->fTexFBOID));
1.769 + if (!desc->fTexFBOID) {
1.770 + goto FAILED;
1.771 + }
1.772 +
1.773 +
1.774 + // If we are using multisampling we will create two FBOS. We render to one and then resolve to
1.775 + // the texture bound to the other. The exception is the IMG multisample extension. With this
1.776 + // extension the texture is multisampled when rendered to and then auto-resolves it when it is
1.777 + // rendered from.
1.778 + if (desc->fSampleCnt > 0 && this->glCaps().usesMSAARenderBuffers()) {
1.779 + GL_CALL(GenFramebuffers(1, &desc->fRTFBOID));
1.780 + GL_CALL(GenRenderbuffers(1, &desc->fMSColorRenderbufferID));
1.781 + if (!desc->fRTFBOID ||
1.782 + !desc->fMSColorRenderbufferID ||
1.783 + !this->configToGLFormats(desc->fConfig,
1.784 + // ES2 and ES3 require sized internal formats for rb storage.
1.785 + kGLES_GrGLStandard == this->glStandard(),
1.786 + &msColorFormat,
1.787 + NULL,
1.788 + NULL)) {
1.789 + goto FAILED;
1.790 + }
1.791 + } else {
1.792 + desc->fRTFBOID = desc->fTexFBOID;
1.793 + }
1.794 +
1.795 + // below here we may bind the FBO
1.796 + fHWBoundRenderTarget = NULL;
1.797 + if (desc->fRTFBOID != desc->fTexFBOID) {
1.798 + SkASSERT(desc->fSampleCnt > 0);
1.799 + GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER,
1.800 + desc->fMSColorRenderbufferID));
1.801 + if (!renderbuffer_storage_msaa(fGLContext,
1.802 + desc->fSampleCnt,
1.803 + msColorFormat,
1.804 + width, height)) {
1.805 + goto FAILED;
1.806 + }
1.807 + GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, desc->fRTFBOID));
1.808 + GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
1.809 + GR_GL_COLOR_ATTACHMENT0,
1.810 + GR_GL_RENDERBUFFER,
1.811 + desc->fMSColorRenderbufferID));
1.812 + if (desc->fCheckAllocation ||
1.813 + !this->glCaps().isConfigVerifiedColorAttachment(desc->fConfig)) {
1.814 + GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
1.815 + if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
1.816 + goto FAILED;
1.817 + }
1.818 + fGLContext.caps()->markConfigAsValidColorAttachment(desc->fConfig);
1.819 + }
1.820 + }
1.821 + GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, desc->fTexFBOID));
1.822 +
1.823 + if (this->glCaps().usesImplicitMSAAResolve() && desc->fSampleCnt > 0) {
1.824 + GL_CALL(FramebufferTexture2DMultisample(GR_GL_FRAMEBUFFER,
1.825 + GR_GL_COLOR_ATTACHMENT0,
1.826 + GR_GL_TEXTURE_2D,
1.827 + texID, 0, desc->fSampleCnt));
1.828 + } else {
1.829 + GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER,
1.830 + GR_GL_COLOR_ATTACHMENT0,
1.831 + GR_GL_TEXTURE_2D,
1.832 + texID, 0));
1.833 + }
1.834 + if (desc->fCheckAllocation ||
1.835 + !this->glCaps().isConfigVerifiedColorAttachment(desc->fConfig)) {
1.836 + GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
1.837 + if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
1.838 + goto FAILED;
1.839 + }
1.840 + fGLContext.caps()->markConfigAsValidColorAttachment(desc->fConfig);
1.841 + }
1.842 +
1.843 + return true;
1.844 +
1.845 +FAILED:
1.846 + if (desc->fMSColorRenderbufferID) {
1.847 + GL_CALL(DeleteRenderbuffers(1, &desc->fMSColorRenderbufferID));
1.848 + }
1.849 + if (desc->fRTFBOID != desc->fTexFBOID) {
1.850 + GL_CALL(DeleteFramebuffers(1, &desc->fRTFBOID));
1.851 + }
1.852 + if (desc->fTexFBOID) {
1.853 + GL_CALL(DeleteFramebuffers(1, &desc->fTexFBOID));
1.854 + }
1.855 + return false;
1.856 +}
1.857 +
1.858 +// good to set a break-point here to know when createTexture fails
1.859 +static GrTexture* return_null_texture() {
1.860 +// SkDEBUGFAIL("null texture");
1.861 + return NULL;
1.862 +}
1.863 +
1.864 +#if 0 && defined(SK_DEBUG)
1.865 +static size_t as_size_t(int x) {
1.866 + return x;
1.867 +}
1.868 +#endif
1.869 +
1.870 +GrTexture* GrGpuGL::onCreateTexture(const GrTextureDesc& desc,
1.871 + const void* srcData,
1.872 + size_t rowBytes) {
1.873 +
1.874 + GrGLTexture::Desc glTexDesc;
1.875 + GrGLRenderTarget::Desc glRTDesc;
1.876 +
1.877 + // Attempt to catch un- or wrongly initialized sample counts;
1.878 + SkASSERT(desc.fSampleCnt >= 0 && desc.fSampleCnt <= 64);
1.879 + // We fail if the MSAA was requested and is not available.
1.880 + if (GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType() && desc.fSampleCnt) {
1.881 + //GrPrintf("MSAA RT requested but not supported on this platform.");
1.882 + return return_null_texture();
1.883 + }
1.884 + // If the sample count exceeds the max then we clamp it.
1.885 + glTexDesc.fSampleCnt = GrMin(desc.fSampleCnt, this->caps()->maxSampleCount());
1.886 +
1.887 + glTexDesc.fFlags = desc.fFlags;
1.888 + glTexDesc.fWidth = desc.fWidth;
1.889 + glTexDesc.fHeight = desc.fHeight;
1.890 + glTexDesc.fConfig = desc.fConfig;
1.891 + glTexDesc.fIsWrapped = false;
1.892 +
1.893 + glRTDesc.fMSColorRenderbufferID = 0;
1.894 + glRTDesc.fRTFBOID = 0;
1.895 + glRTDesc.fTexFBOID = 0;
1.896 + glRTDesc.fIsWrapped = false;
1.897 + glRTDesc.fConfig = glTexDesc.fConfig;
1.898 + glRTDesc.fCheckAllocation = SkToBool(desc.fFlags & kCheckAllocation_GrTextureFlagBit);
1.899 +
1.900 + bool renderTarget = SkToBool(desc.fFlags & kRenderTarget_GrTextureFlagBit);
1.901 +
1.902 + glTexDesc.fOrigin = resolve_origin(desc.fOrigin, renderTarget);
1.903 + glRTDesc.fOrigin = glTexDesc.fOrigin;
1.904 +
1.905 + glRTDesc.fSampleCnt = glTexDesc.fSampleCnt;
1.906 + if (GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType() &&
1.907 + desc.fSampleCnt) {
1.908 + //GrPrintf("MSAA RT requested but not supported on this platform.");
1.909 + return return_null_texture();
1.910 + }
1.911 +
1.912 + if (renderTarget) {
1.913 + int maxRTSize = this->caps()->maxRenderTargetSize();
1.914 + if (glTexDesc.fWidth > maxRTSize || glTexDesc.fHeight > maxRTSize) {
1.915 + return return_null_texture();
1.916 + }
1.917 + } else {
1.918 + int maxSize = this->caps()->maxTextureSize();
1.919 + if (glTexDesc.fWidth > maxSize || glTexDesc.fHeight > maxSize) {
1.920 + return return_null_texture();
1.921 + }
1.922 + }
1.923 +
1.924 + GL_CALL(GenTextures(1, &glTexDesc.fTextureID));
1.925 +
1.926 + if (!glTexDesc.fTextureID) {
1.927 + return return_null_texture();
1.928 + }
1.929 +
1.930 + this->setScratchTextureUnit();
1.931 + GL_CALL(BindTexture(GR_GL_TEXTURE_2D, glTexDesc.fTextureID));
1.932 +
1.933 + if (renderTarget && this->glCaps().textureUsageSupport()) {
1.934 + // provides a hint about how this texture will be used
1.935 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
1.936 + GR_GL_TEXTURE_USAGE,
1.937 + GR_GL_FRAMEBUFFER_ATTACHMENT));
1.938 + }
1.939 +
1.940 + // Some drivers like to know filter/wrap before seeing glTexImage2D. Some
1.941 + // drivers have a bug where an FBO won't be complete if it includes a
1.942 + // texture that is not mipmap complete (considering the filter in use).
1.943 + GrGLTexture::TexParams initialTexParams;
1.944 + // we only set a subset here so invalidate first
1.945 + initialTexParams.invalidate();
1.946 + initialTexParams.fMinFilter = GR_GL_NEAREST;
1.947 + initialTexParams.fMagFilter = GR_GL_NEAREST;
1.948 + initialTexParams.fWrapS = GR_GL_CLAMP_TO_EDGE;
1.949 + initialTexParams.fWrapT = GR_GL_CLAMP_TO_EDGE;
1.950 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
1.951 + GR_GL_TEXTURE_MAG_FILTER,
1.952 + initialTexParams.fMagFilter));
1.953 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
1.954 + GR_GL_TEXTURE_MIN_FILTER,
1.955 + initialTexParams.fMinFilter));
1.956 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
1.957 + GR_GL_TEXTURE_WRAP_S,
1.958 + initialTexParams.fWrapS));
1.959 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
1.960 + GR_GL_TEXTURE_WRAP_T,
1.961 + initialTexParams.fWrapT));
1.962 + if (!this->uploadTexData(glTexDesc, true, 0, 0,
1.963 + glTexDesc.fWidth, glTexDesc.fHeight,
1.964 + desc.fConfig, srcData, rowBytes)) {
1.965 + GL_CALL(DeleteTextures(1, &glTexDesc.fTextureID));
1.966 + return return_null_texture();
1.967 + }
1.968 +
1.969 + GrGLTexture* tex;
1.970 + if (renderTarget) {
1.971 + // unbind the texture from the texture unit before binding it to the frame buffer
1.972 + GL_CALL(BindTexture(GR_GL_TEXTURE_2D, 0));
1.973 +
1.974 + if (!this->createRenderTargetObjects(glTexDesc.fWidth,
1.975 + glTexDesc.fHeight,
1.976 + glTexDesc.fTextureID,
1.977 + &glRTDesc)) {
1.978 + GL_CALL(DeleteTextures(1, &glTexDesc.fTextureID));
1.979 + return return_null_texture();
1.980 + }
1.981 + tex = SkNEW_ARGS(GrGLTexture, (this, glTexDesc, glRTDesc));
1.982 + } else {
1.983 + tex = SkNEW_ARGS(GrGLTexture, (this, glTexDesc));
1.984 + }
1.985 + tex->setCachedTexParams(initialTexParams, this->getResetTimestamp());
1.986 +#ifdef TRACE_TEXTURE_CREATION
1.987 + GrPrintf("--- new texture [%d] size=(%d %d) config=%d\n",
1.988 + glTexDesc.fTextureID, desc.fWidth, desc.fHeight, desc.fConfig);
1.989 +#endif
1.990 + return tex;
1.991 +}
1.992 +
1.993 +namespace {
1.994 +
1.995 +const GrGLuint kUnknownBitCount = GrGLStencilBuffer::kUnknownBitCount;
1.996 +
1.997 +void inline get_stencil_rb_sizes(const GrGLInterface* gl,
1.998 + GrGLStencilBuffer::Format* format) {
1.999 +
1.1000 + // we shouldn't ever know one size and not the other
1.1001 + SkASSERT((kUnknownBitCount == format->fStencilBits) ==
1.1002 + (kUnknownBitCount == format->fTotalBits));
1.1003 + if (kUnknownBitCount == format->fStencilBits) {
1.1004 + GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER,
1.1005 + GR_GL_RENDERBUFFER_STENCIL_SIZE,
1.1006 + (GrGLint*)&format->fStencilBits);
1.1007 + if (format->fPacked) {
1.1008 + GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER,
1.1009 + GR_GL_RENDERBUFFER_DEPTH_SIZE,
1.1010 + (GrGLint*)&format->fTotalBits);
1.1011 + format->fTotalBits += format->fStencilBits;
1.1012 + } else {
1.1013 + format->fTotalBits = format->fStencilBits;
1.1014 + }
1.1015 + }
1.1016 +}
1.1017 +}
1.1018 +
1.1019 +bool GrGpuGL::createStencilBufferForRenderTarget(GrRenderTarget* rt,
1.1020 + int width, int height) {
1.1021 +
1.1022 + // All internally created RTs are also textures. We don't create
1.1023 + // SBs for a client's standalone RT (that is a RT that isn't also a texture).
1.1024 + SkASSERT(rt->asTexture());
1.1025 + SkASSERT(width >= rt->width());
1.1026 + SkASSERT(height >= rt->height());
1.1027 +
1.1028 + int samples = rt->numSamples();
1.1029 + GrGLuint sbID;
1.1030 + GL_CALL(GenRenderbuffers(1, &sbID));
1.1031 + if (!sbID) {
1.1032 + return false;
1.1033 + }
1.1034 +
1.1035 + int stencilFmtCnt = this->glCaps().stencilFormats().count();
1.1036 + for (int i = 0; i < stencilFmtCnt; ++i) {
1.1037 + GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, sbID));
1.1038 + // we start with the last stencil format that succeeded in hopes
1.1039 + // that we won't go through this loop more than once after the
1.1040 + // first (painful) stencil creation.
1.1041 + int sIdx = (i + fLastSuccessfulStencilFmtIdx) % stencilFmtCnt;
1.1042 + const GrGLCaps::StencilFormat& sFmt =
1.1043 + this->glCaps().stencilFormats()[sIdx];
1.1044 + CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
1.1045 + // we do this "if" so that we don't call the multisample
1.1046 + // version on a GL that doesn't have an MSAA extension.
1.1047 + bool created;
1.1048 + if (samples > 0) {
1.1049 + created = renderbuffer_storage_msaa(fGLContext,
1.1050 + samples,
1.1051 + sFmt.fInternalFormat,
1.1052 + width, height);
1.1053 + } else {
1.1054 + GL_ALLOC_CALL(this->glInterface(),
1.1055 + RenderbufferStorage(GR_GL_RENDERBUFFER,
1.1056 + sFmt.fInternalFormat,
1.1057 + width, height));
1.1058 + created =
1.1059 + (GR_GL_NO_ERROR == check_alloc_error(rt->desc(), this->glInterface()));
1.1060 + }
1.1061 + if (created) {
1.1062 + // After sized formats we attempt an unsized format and take
1.1063 + // whatever sizes GL gives us. In that case we query for the size.
1.1064 + GrGLStencilBuffer::Format format = sFmt;
1.1065 + get_stencil_rb_sizes(this->glInterface(), &format);
1.1066 + static const bool kIsWrapped = false;
1.1067 + SkAutoTUnref<GrStencilBuffer> sb(SkNEW_ARGS(GrGLStencilBuffer,
1.1068 + (this, kIsWrapped, sbID, width, height,
1.1069 + samples, format)));
1.1070 + if (this->attachStencilBufferToRenderTarget(sb, rt)) {
1.1071 + fLastSuccessfulStencilFmtIdx = sIdx;
1.1072 + sb->transferToCache();
1.1073 + rt->setStencilBuffer(sb);
1.1074 + return true;
1.1075 + }
1.1076 + sb->abandon(); // otherwise we lose sbID
1.1077 + }
1.1078 + }
1.1079 + GL_CALL(DeleteRenderbuffers(1, &sbID));
1.1080 + return false;
1.1081 +}
1.1082 +
1.1083 +bool GrGpuGL::attachStencilBufferToRenderTarget(GrStencilBuffer* sb, GrRenderTarget* rt) {
1.1084 + GrGLRenderTarget* glrt = (GrGLRenderTarget*) rt;
1.1085 +
1.1086 + GrGLuint fbo = glrt->renderFBOID();
1.1087 +
1.1088 + if (NULL == sb) {
1.1089 + if (NULL != rt->getStencilBuffer()) {
1.1090 + GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
1.1091 + GR_GL_STENCIL_ATTACHMENT,
1.1092 + GR_GL_RENDERBUFFER, 0));
1.1093 + GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
1.1094 + GR_GL_DEPTH_ATTACHMENT,
1.1095 + GR_GL_RENDERBUFFER, 0));
1.1096 +#ifdef SK_DEBUG
1.1097 + GrGLenum status;
1.1098 + GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
1.1099 + SkASSERT(GR_GL_FRAMEBUFFER_COMPLETE == status);
1.1100 +#endif
1.1101 + }
1.1102 + return true;
1.1103 + } else {
1.1104 + GrGLStencilBuffer* glsb = static_cast<GrGLStencilBuffer*>(sb);
1.1105 + GrGLuint rb = glsb->renderbufferID();
1.1106 +
1.1107 + fHWBoundRenderTarget = NULL;
1.1108 + GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, fbo));
1.1109 + GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
1.1110 + GR_GL_STENCIL_ATTACHMENT,
1.1111 + GR_GL_RENDERBUFFER, rb));
1.1112 + if (glsb->format().fPacked) {
1.1113 + GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
1.1114 + GR_GL_DEPTH_ATTACHMENT,
1.1115 + GR_GL_RENDERBUFFER, rb));
1.1116 + } else {
1.1117 + GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
1.1118 + GR_GL_DEPTH_ATTACHMENT,
1.1119 + GR_GL_RENDERBUFFER, 0));
1.1120 + }
1.1121 +
1.1122 + GrGLenum status;
1.1123 + if (!this->glCaps().isColorConfigAndStencilFormatVerified(rt->config(), glsb->format())) {
1.1124 + GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
1.1125 + if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
1.1126 + GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
1.1127 + GR_GL_STENCIL_ATTACHMENT,
1.1128 + GR_GL_RENDERBUFFER, 0));
1.1129 + if (glsb->format().fPacked) {
1.1130 + GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
1.1131 + GR_GL_DEPTH_ATTACHMENT,
1.1132 + GR_GL_RENDERBUFFER, 0));
1.1133 + }
1.1134 + return false;
1.1135 + } else {
1.1136 + fGLContext.caps()->markColorConfigAndStencilFormatAsVerified(
1.1137 + rt->config(),
1.1138 + glsb->format());
1.1139 + }
1.1140 + }
1.1141 + return true;
1.1142 + }
1.1143 +}
1.1144 +
1.1145 +////////////////////////////////////////////////////////////////////////////////
1.1146 +
1.1147 +GrVertexBuffer* GrGpuGL::onCreateVertexBuffer(size_t size, bool dynamic) {
1.1148 + GrGLVertexBuffer::Desc desc;
1.1149 + desc.fDynamic = dynamic;
1.1150 + desc.fSizeInBytes = size;
1.1151 + desc.fIsWrapped = false;
1.1152 +
1.1153 + if (this->glCaps().useNonVBOVertexAndIndexDynamicData() && desc.fDynamic) {
1.1154 + desc.fID = 0;
1.1155 + GrGLVertexBuffer* vertexBuffer = SkNEW_ARGS(GrGLVertexBuffer, (this, desc));
1.1156 + return vertexBuffer;
1.1157 + } else {
1.1158 + GL_CALL(GenBuffers(1, &desc.fID));
1.1159 + if (desc.fID) {
1.1160 + fHWGeometryState.setVertexBufferID(this, desc.fID);
1.1161 + CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
1.1162 + // make sure driver can allocate memory for this buffer
1.1163 + GL_ALLOC_CALL(this->glInterface(),
1.1164 + BufferData(GR_GL_ARRAY_BUFFER,
1.1165 + (GrGLsizeiptr) desc.fSizeInBytes,
1.1166 + NULL, // data ptr
1.1167 + desc.fDynamic ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW));
1.1168 + if (CHECK_ALLOC_ERROR(this->glInterface()) != GR_GL_NO_ERROR) {
1.1169 + GL_CALL(DeleteBuffers(1, &desc.fID));
1.1170 + this->notifyVertexBufferDelete(desc.fID);
1.1171 + return NULL;
1.1172 + }
1.1173 + GrGLVertexBuffer* vertexBuffer = SkNEW_ARGS(GrGLVertexBuffer, (this, desc));
1.1174 + return vertexBuffer;
1.1175 + }
1.1176 + return NULL;
1.1177 + }
1.1178 +}
1.1179 +
1.1180 +GrIndexBuffer* GrGpuGL::onCreateIndexBuffer(size_t size, bool dynamic) {
1.1181 + GrGLIndexBuffer::Desc desc;
1.1182 + desc.fDynamic = dynamic;
1.1183 + desc.fSizeInBytes = size;
1.1184 + desc.fIsWrapped = false;
1.1185 +
1.1186 + if (this->glCaps().useNonVBOVertexAndIndexDynamicData() && desc.fDynamic) {
1.1187 + desc.fID = 0;
1.1188 + GrIndexBuffer* indexBuffer = SkNEW_ARGS(GrGLIndexBuffer, (this, desc));
1.1189 + return indexBuffer;
1.1190 + } else {
1.1191 + GL_CALL(GenBuffers(1, &desc.fID));
1.1192 + if (desc.fID) {
1.1193 + fHWGeometryState.setIndexBufferIDOnDefaultVertexArray(this, desc.fID);
1.1194 + CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
1.1195 + // make sure driver can allocate memory for this buffer
1.1196 + GL_ALLOC_CALL(this->glInterface(),
1.1197 + BufferData(GR_GL_ELEMENT_ARRAY_BUFFER,
1.1198 + (GrGLsizeiptr) desc.fSizeInBytes,
1.1199 + NULL, // data ptr
1.1200 + desc.fDynamic ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW));
1.1201 + if (CHECK_ALLOC_ERROR(this->glInterface()) != GR_GL_NO_ERROR) {
1.1202 + GL_CALL(DeleteBuffers(1, &desc.fID));
1.1203 + this->notifyIndexBufferDelete(desc.fID);
1.1204 + return NULL;
1.1205 + }
1.1206 + GrIndexBuffer* indexBuffer = SkNEW_ARGS(GrGLIndexBuffer, (this, desc));
1.1207 + return indexBuffer;
1.1208 + }
1.1209 + return NULL;
1.1210 + }
1.1211 +}
1.1212 +
1.1213 +GrPath* GrGpuGL::onCreatePath(const SkPath& inPath, const SkStrokeRec& stroke) {
1.1214 + SkASSERT(this->caps()->pathRenderingSupport());
1.1215 + return SkNEW_ARGS(GrGLPath, (this, inPath, stroke));
1.1216 +}
1.1217 +
1.1218 +void GrGpuGL::flushScissor() {
1.1219 + if (fScissorState.fEnabled) {
1.1220 + // Only access the RT if scissoring is being enabled. We can call this before performing
1.1221 + // a glBitframebuffer for a surface->surface copy, which requires no RT to be bound to the
1.1222 + // GrDrawState.
1.1223 + const GrDrawState& drawState = this->getDrawState();
1.1224 + const GrGLRenderTarget* rt =
1.1225 + static_cast<const GrGLRenderTarget*>(drawState.getRenderTarget());
1.1226 +
1.1227 + SkASSERT(NULL != rt);
1.1228 + const GrGLIRect& vp = rt->getViewport();
1.1229 + GrGLIRect scissor;
1.1230 + scissor.setRelativeTo(vp,
1.1231 + fScissorState.fRect.fLeft,
1.1232 + fScissorState.fRect.fTop,
1.1233 + fScissorState.fRect.width(),
1.1234 + fScissorState.fRect.height(),
1.1235 + rt->origin());
1.1236 + // if the scissor fully contains the viewport then we fall through and
1.1237 + // disable the scissor test.
1.1238 + if (!scissor.contains(vp)) {
1.1239 + if (fHWScissorSettings.fRect != scissor) {
1.1240 + scissor.pushToGLScissor(this->glInterface());
1.1241 + fHWScissorSettings.fRect = scissor;
1.1242 + }
1.1243 + if (kYes_TriState != fHWScissorSettings.fEnabled) {
1.1244 + GL_CALL(Enable(GR_GL_SCISSOR_TEST));
1.1245 + fHWScissorSettings.fEnabled = kYes_TriState;
1.1246 + }
1.1247 + return;
1.1248 + }
1.1249 + }
1.1250 + if (kNo_TriState != fHWScissorSettings.fEnabled) {
1.1251 + GL_CALL(Disable(GR_GL_SCISSOR_TEST));
1.1252 + fHWScissorSettings.fEnabled = kNo_TriState;
1.1253 + return;
1.1254 + }
1.1255 +}
1.1256 +
1.1257 +void GrGpuGL::onClear(const SkIRect* rect, GrColor color, bool canIgnoreRect) {
1.1258 + const GrDrawState& drawState = this->getDrawState();
1.1259 + const GrRenderTarget* rt = drawState.getRenderTarget();
1.1260 + // parent class should never let us get here with no RT
1.1261 + SkASSERT(NULL != rt);
1.1262 +
1.1263 + if (canIgnoreRect && this->glCaps().fullClearIsFree()) {
1.1264 + rect = NULL;
1.1265 + }
1.1266 +
1.1267 + SkIRect clippedRect;
1.1268 + if (NULL != rect) {
1.1269 + // flushScissor expects rect to be clipped to the target.
1.1270 + clippedRect = *rect;
1.1271 + SkIRect rtRect = SkIRect::MakeWH(rt->width(), rt->height());
1.1272 + if (clippedRect.intersect(rtRect)) {
1.1273 + rect = &clippedRect;
1.1274 + } else {
1.1275 + return;
1.1276 + }
1.1277 + }
1.1278 +
1.1279 + this->flushRenderTarget(rect);
1.1280 + GrAutoTRestore<ScissorState> asr(&fScissorState);
1.1281 + fScissorState.fEnabled = (NULL != rect);
1.1282 + if (fScissorState.fEnabled) {
1.1283 + fScissorState.fRect = *rect;
1.1284 + }
1.1285 + this->flushScissor();
1.1286 +
1.1287 + GrGLfloat r, g, b, a;
1.1288 + static const GrGLfloat scale255 = 1.f / 255.f;
1.1289 + a = GrColorUnpackA(color) * scale255;
1.1290 + GrGLfloat scaleRGB = scale255;
1.1291 + r = GrColorUnpackR(color) * scaleRGB;
1.1292 + g = GrColorUnpackG(color) * scaleRGB;
1.1293 + b = GrColorUnpackB(color) * scaleRGB;
1.1294 +
1.1295 + GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE));
1.1296 + fHWWriteToColor = kYes_TriState;
1.1297 + GL_CALL(ClearColor(r, g, b, a));
1.1298 + GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT));
1.1299 +}
1.1300 +
1.1301 +void GrGpuGL::clearStencil() {
1.1302 + if (NULL == this->getDrawState().getRenderTarget()) {
1.1303 + return;
1.1304 + }
1.1305 +
1.1306 + this->flushRenderTarget(&SkIRect::EmptyIRect());
1.1307 +
1.1308 + GrAutoTRestore<ScissorState> asr(&fScissorState);
1.1309 + fScissorState.fEnabled = false;
1.1310 + this->flushScissor();
1.1311 +
1.1312 + GL_CALL(StencilMask(0xffffffff));
1.1313 + GL_CALL(ClearStencil(0));
1.1314 + GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT));
1.1315 + fHWStencilSettings.invalidate();
1.1316 +}
1.1317 +
1.1318 +void GrGpuGL::clearStencilClip(const SkIRect& rect, bool insideClip) {
1.1319 + const GrDrawState& drawState = this->getDrawState();
1.1320 + const GrRenderTarget* rt = drawState.getRenderTarget();
1.1321 + SkASSERT(NULL != rt);
1.1322 +
1.1323 + // this should only be called internally when we know we have a
1.1324 + // stencil buffer.
1.1325 + SkASSERT(NULL != rt->getStencilBuffer());
1.1326 + GrGLint stencilBitCount = rt->getStencilBuffer()->bits();
1.1327 +#if 0
1.1328 + SkASSERT(stencilBitCount > 0);
1.1329 + GrGLint clipStencilMask = (1 << (stencilBitCount - 1));
1.1330 +#else
1.1331 + // we could just clear the clip bit but when we go through
1.1332 + // ANGLE a partial stencil mask will cause clears to be
1.1333 + // turned into draws. Our contract on GrDrawTarget says that
1.1334 + // changing the clip between stencil passes may or may not
1.1335 + // zero the client's clip bits. So we just clear the whole thing.
1.1336 + static const GrGLint clipStencilMask = ~0;
1.1337 +#endif
1.1338 + GrGLint value;
1.1339 + if (insideClip) {
1.1340 + value = (1 << (stencilBitCount - 1));
1.1341 + } else {
1.1342 + value = 0;
1.1343 + }
1.1344 + this->flushRenderTarget(&SkIRect::EmptyIRect());
1.1345 +
1.1346 + GrAutoTRestore<ScissorState> asr(&fScissorState);
1.1347 + fScissorState.fEnabled = true;
1.1348 + fScissorState.fRect = rect;
1.1349 + this->flushScissor();
1.1350 +
1.1351 + GL_CALL(StencilMask((uint32_t) clipStencilMask));
1.1352 + GL_CALL(ClearStencil(value));
1.1353 + GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT));
1.1354 + fHWStencilSettings.invalidate();
1.1355 +}
1.1356 +
1.1357 +void GrGpuGL::onForceRenderTargetFlush() {
1.1358 + this->flushRenderTarget(&SkIRect::EmptyIRect());
1.1359 +}
1.1360 +
1.1361 +bool GrGpuGL::readPixelsWillPayForYFlip(GrRenderTarget* renderTarget,
1.1362 + int left, int top,
1.1363 + int width, int height,
1.1364 + GrPixelConfig config,
1.1365 + size_t rowBytes) const {
1.1366 + // If this rendertarget is aready TopLeft, we don't need to flip.
1.1367 + if (kTopLeft_GrSurfaceOrigin == renderTarget->origin()) {
1.1368 + return false;
1.1369 + }
1.1370 +
1.1371 + // if GL can do the flip then we'll never pay for it.
1.1372 + if (this->glCaps().packFlipYSupport()) {
1.1373 + return false;
1.1374 + }
1.1375 +
1.1376 + // If we have to do memcpy to handle non-trim rowBytes then we
1.1377 + // get the flip for free. Otherwise it costs.
1.1378 + if (this->glCaps().packRowLengthSupport()) {
1.1379 + return true;
1.1380 + }
1.1381 + // If we have to do memcpys to handle rowBytes then y-flip is free
1.1382 + // Note the rowBytes might be tight to the passed in data, but if data
1.1383 + // gets clipped in x to the target the rowBytes will no longer be tight.
1.1384 + if (left >= 0 && (left + width) < renderTarget->width()) {
1.1385 + return 0 == rowBytes ||
1.1386 + GrBytesPerPixel(config) * width == rowBytes;
1.1387 + } else {
1.1388 + return false;
1.1389 + }
1.1390 +}
1.1391 +
1.1392 +bool GrGpuGL::onReadPixels(GrRenderTarget* target,
1.1393 + int left, int top,
1.1394 + int width, int height,
1.1395 + GrPixelConfig config,
1.1396 + void* buffer,
1.1397 + size_t rowBytes) {
1.1398 + GrGLenum format;
1.1399 + GrGLenum type;
1.1400 + bool flipY = kBottomLeft_GrSurfaceOrigin == target->origin();
1.1401 + if (!this->configToGLFormats(config, false, NULL, &format, &type)) {
1.1402 + return false;
1.1403 + }
1.1404 + size_t bpp = GrBytesPerPixel(config);
1.1405 + if (!adjust_pixel_ops_params(target->width(), target->height(), bpp,
1.1406 + &left, &top, &width, &height,
1.1407 + const_cast<const void**>(&buffer),
1.1408 + &rowBytes)) {
1.1409 + return false;
1.1410 + }
1.1411 +
1.1412 + // resolve the render target if necessary
1.1413 + GrGLRenderTarget* tgt = static_cast<GrGLRenderTarget*>(target);
1.1414 + GrDrawState::AutoRenderTargetRestore artr;
1.1415 + switch (tgt->getResolveType()) {
1.1416 + case GrGLRenderTarget::kCantResolve_ResolveType:
1.1417 + return false;
1.1418 + case GrGLRenderTarget::kAutoResolves_ResolveType:
1.1419 + artr.set(this->drawState(), target);
1.1420 + this->flushRenderTarget(&SkIRect::EmptyIRect());
1.1421 + break;
1.1422 + case GrGLRenderTarget::kCanResolve_ResolveType:
1.1423 + this->onResolveRenderTarget(tgt);
1.1424 + // we don't track the state of the READ FBO ID.
1.1425 + GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER,
1.1426 + tgt->textureFBOID()));
1.1427 + break;
1.1428 + default:
1.1429 + GrCrash("Unknown resolve type");
1.1430 + }
1.1431 +
1.1432 + const GrGLIRect& glvp = tgt->getViewport();
1.1433 +
1.1434 + // the read rect is viewport-relative
1.1435 + GrGLIRect readRect;
1.1436 + readRect.setRelativeTo(glvp, left, top, width, height, target->origin());
1.1437 +
1.1438 + size_t tightRowBytes = bpp * width;
1.1439 + if (0 == rowBytes) {
1.1440 + rowBytes = tightRowBytes;
1.1441 + }
1.1442 + size_t readDstRowBytes = tightRowBytes;
1.1443 + void* readDst = buffer;
1.1444 +
1.1445 + // determine if GL can read using the passed rowBytes or if we need
1.1446 + // a scratch buffer.
1.1447 + SkAutoSMalloc<32 * sizeof(GrColor)> scratch;
1.1448 + if (rowBytes != tightRowBytes) {
1.1449 + if (this->glCaps().packRowLengthSupport()) {
1.1450 + SkASSERT(!(rowBytes % sizeof(GrColor)));
1.1451 + GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH,
1.1452 + static_cast<GrGLint>(rowBytes / sizeof(GrColor))));
1.1453 + readDstRowBytes = rowBytes;
1.1454 + } else {
1.1455 + scratch.reset(tightRowBytes * height);
1.1456 + readDst = scratch.get();
1.1457 + }
1.1458 + }
1.1459 + if (flipY && this->glCaps().packFlipYSupport()) {
1.1460 + GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 1));
1.1461 + }
1.1462 + GL_CALL(ReadPixels(readRect.fLeft, readRect.fBottom,
1.1463 + readRect.fWidth, readRect.fHeight,
1.1464 + format, type, readDst));
1.1465 + if (readDstRowBytes != tightRowBytes) {
1.1466 + SkASSERT(this->glCaps().packRowLengthSupport());
1.1467 + GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0));
1.1468 + }
1.1469 + if (flipY && this->glCaps().packFlipYSupport()) {
1.1470 + GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 0));
1.1471 + flipY = false;
1.1472 + }
1.1473 +
1.1474 + // now reverse the order of the rows, since GL's are bottom-to-top, but our
1.1475 + // API presents top-to-bottom. We must preserve the padding contents. Note
1.1476 + // that the above readPixels did not overwrite the padding.
1.1477 + if (readDst == buffer) {
1.1478 + SkASSERT(rowBytes == readDstRowBytes);
1.1479 + if (flipY) {
1.1480 + scratch.reset(tightRowBytes);
1.1481 + void* tmpRow = scratch.get();
1.1482 + // flip y in-place by rows
1.1483 + const int halfY = height >> 1;
1.1484 + char* top = reinterpret_cast<char*>(buffer);
1.1485 + char* bottom = top + (height - 1) * rowBytes;
1.1486 + for (int y = 0; y < halfY; y++) {
1.1487 + memcpy(tmpRow, top, tightRowBytes);
1.1488 + memcpy(top, bottom, tightRowBytes);
1.1489 + memcpy(bottom, tmpRow, tightRowBytes);
1.1490 + top += rowBytes;
1.1491 + bottom -= rowBytes;
1.1492 + }
1.1493 + }
1.1494 + } else {
1.1495 + SkASSERT(readDst != buffer); SkASSERT(rowBytes != tightRowBytes);
1.1496 + // copy from readDst to buffer while flipping y
1.1497 + // const int halfY = height >> 1;
1.1498 + const char* src = reinterpret_cast<const char*>(readDst);
1.1499 + char* dst = reinterpret_cast<char*>(buffer);
1.1500 + if (flipY) {
1.1501 + dst += (height-1) * rowBytes;
1.1502 + }
1.1503 + for (int y = 0; y < height; y++) {
1.1504 + memcpy(dst, src, tightRowBytes);
1.1505 + src += readDstRowBytes;
1.1506 + if (!flipY) {
1.1507 + dst += rowBytes;
1.1508 + } else {
1.1509 + dst -= rowBytes;
1.1510 + }
1.1511 + }
1.1512 + }
1.1513 + return true;
1.1514 +}
1.1515 +
1.1516 +void GrGpuGL::flushRenderTarget(const SkIRect* bound) {
1.1517 +
1.1518 + GrGLRenderTarget* rt =
1.1519 + static_cast<GrGLRenderTarget*>(this->drawState()->getRenderTarget());
1.1520 + SkASSERT(NULL != rt);
1.1521 +
1.1522 + if (fHWBoundRenderTarget != rt) {
1.1523 + GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, rt->renderFBOID()));
1.1524 +#ifdef SK_DEBUG
1.1525 + // don't do this check in Chromium -- this is causing
1.1526 + // lots of repeated command buffer flushes when the compositor is
1.1527 + // rendering with Ganesh, which is really slow; even too slow for
1.1528 + // Debug mode.
1.1529 + if (!this->glContext().isChromium()) {
1.1530 + GrGLenum status;
1.1531 + GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
1.1532 + if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
1.1533 + GrPrintf("GrGpuGL::flushRenderTarget glCheckFramebufferStatus %x\n", status);
1.1534 + }
1.1535 + }
1.1536 +#endif
1.1537 + fHWBoundRenderTarget = rt;
1.1538 + const GrGLIRect& vp = rt->getViewport();
1.1539 + if (fHWViewport != vp) {
1.1540 + vp.pushToGLViewport(this->glInterface());
1.1541 + fHWViewport = vp;
1.1542 + }
1.1543 + }
1.1544 + if (NULL == bound || !bound->isEmpty()) {
1.1545 + rt->flagAsNeedingResolve(bound);
1.1546 + }
1.1547 +
1.1548 + GrTexture *texture = rt->asTexture();
1.1549 + if (texture) {
1.1550 + texture->dirtyMipMaps(true);
1.1551 + }
1.1552 +}
1.1553 +
1.1554 +GrGLenum gPrimitiveType2GLMode[] = {
1.1555 + GR_GL_TRIANGLES,
1.1556 + GR_GL_TRIANGLE_STRIP,
1.1557 + GR_GL_TRIANGLE_FAN,
1.1558 + GR_GL_POINTS,
1.1559 + GR_GL_LINES,
1.1560 + GR_GL_LINE_STRIP
1.1561 +};
1.1562 +
1.1563 +#define SWAP_PER_DRAW 0
1.1564 +
1.1565 +#if SWAP_PER_DRAW
1.1566 + #if defined(SK_BUILD_FOR_MAC)
1.1567 + #include <AGL/agl.h>
1.1568 + #elif defined(SK_BUILD_FOR_WIN32)
1.1569 + #include <gl/GL.h>
1.1570 + void SwapBuf() {
1.1571 + DWORD procID = GetCurrentProcessId();
1.1572 + HWND hwnd = GetTopWindow(GetDesktopWindow());
1.1573 + while(hwnd) {
1.1574 + DWORD wndProcID = 0;
1.1575 + GetWindowThreadProcessId(hwnd, &wndProcID);
1.1576 + if(wndProcID == procID) {
1.1577 + SwapBuffers(GetDC(hwnd));
1.1578 + }
1.1579 + hwnd = GetNextWindow(hwnd, GW_HWNDNEXT);
1.1580 + }
1.1581 + }
1.1582 + #endif
1.1583 +#endif
1.1584 +
1.1585 +void GrGpuGL::onGpuDraw(const DrawInfo& info) {
1.1586 + size_t indexOffsetInBytes;
1.1587 + this->setupGeometry(info, &indexOffsetInBytes);
1.1588 +
1.1589 + SkASSERT((size_t)info.primitiveType() < GR_ARRAY_COUNT(gPrimitiveType2GLMode));
1.1590 +
1.1591 + if (info.isIndexed()) {
1.1592 + GrGLvoid* indices =
1.1593 + reinterpret_cast<GrGLvoid*>(indexOffsetInBytes + sizeof(uint16_t) * info.startIndex());
1.1594 + // info.startVertex() was accounted for by setupGeometry.
1.1595 + GL_CALL(DrawElements(gPrimitiveType2GLMode[info.primitiveType()],
1.1596 + info.indexCount(),
1.1597 + GR_GL_UNSIGNED_SHORT,
1.1598 + indices));
1.1599 + } else {
1.1600 + // Pass 0 for parameter first. We have to adjust glVertexAttribPointer() to account for
1.1601 + // startVertex in the DrawElements case. So we always rely on setupGeometry to have
1.1602 + // accounted for startVertex.
1.1603 + GL_CALL(DrawArrays(gPrimitiveType2GLMode[info.primitiveType()], 0, info.vertexCount()));
1.1604 + }
1.1605 +#if SWAP_PER_DRAW
1.1606 + glFlush();
1.1607 + #if defined(SK_BUILD_FOR_MAC)
1.1608 + aglSwapBuffers(aglGetCurrentContext());
1.1609 + int set_a_break_pt_here = 9;
1.1610 + aglSwapBuffers(aglGetCurrentContext());
1.1611 + #elif defined(SK_BUILD_FOR_WIN32)
1.1612 + SwapBuf();
1.1613 + int set_a_break_pt_here = 9;
1.1614 + SwapBuf();
1.1615 + #endif
1.1616 +#endif
1.1617 +}
1.1618 +
1.1619 +static GrGLenum gr_stencil_op_to_gl_path_rendering_fill_mode(GrStencilOp op) {
1.1620 + switch (op) {
1.1621 + default:
1.1622 + GrCrash("Unexpected path fill.");
1.1623 + /* fallthrough */;
1.1624 + case kIncClamp_StencilOp:
1.1625 + return GR_GL_COUNT_UP;
1.1626 + case kInvert_StencilOp:
1.1627 + return GR_GL_INVERT;
1.1628 + }
1.1629 +}
1.1630 +
1.1631 +void GrGpuGL::onGpuStencilPath(const GrPath* path, SkPath::FillType fill) {
1.1632 + SkASSERT(this->caps()->pathRenderingSupport());
1.1633 +
1.1634 + GrGLuint id = static_cast<const GrGLPath*>(path)->pathID();
1.1635 + SkASSERT(NULL != this->drawState()->getRenderTarget());
1.1636 + SkASSERT(NULL != this->drawState()->getRenderTarget()->getStencilBuffer());
1.1637 +
1.1638 + flushPathStencilSettings(fill);
1.1639 +
1.1640 + // Decide how to manipulate the stencil buffer based on the fill rule.
1.1641 + SkASSERT(!fHWPathStencilSettings.isTwoSided());
1.1642 +
1.1643 + GrGLenum fillMode =
1.1644 + gr_stencil_op_to_gl_path_rendering_fill_mode(fHWPathStencilSettings.passOp(GrStencilSettings::kFront_Face));
1.1645 + GrGLint writeMask = fHWPathStencilSettings.writeMask(GrStencilSettings::kFront_Face);
1.1646 + GL_CALL(StencilFillPath(id, fillMode, writeMask));
1.1647 +}
1.1648 +
1.1649 +void GrGpuGL::onGpuDrawPath(const GrPath* path, SkPath::FillType fill) {
1.1650 + SkASSERT(this->caps()->pathRenderingSupport());
1.1651 +
1.1652 + GrGLuint id = static_cast<const GrGLPath*>(path)->pathID();
1.1653 + SkASSERT(NULL != this->drawState()->getRenderTarget());
1.1654 + SkASSERT(NULL != this->drawState()->getRenderTarget()->getStencilBuffer());
1.1655 + SkASSERT(!fCurrentProgram->hasVertexShader());
1.1656 +
1.1657 + flushPathStencilSettings(fill);
1.1658 + const SkStrokeRec& stroke = path->getStroke();
1.1659 +
1.1660 + SkPath::FillType nonInvertedFill = SkPath::ConvertToNonInverseFillType(fill);
1.1661 + SkASSERT(!fHWPathStencilSettings.isTwoSided());
1.1662 + GrGLenum fillMode =
1.1663 + gr_stencil_op_to_gl_path_rendering_fill_mode(fHWPathStencilSettings.passOp(GrStencilSettings::kFront_Face));
1.1664 + GrGLint writeMask = fHWPathStencilSettings.writeMask(GrStencilSettings::kFront_Face);
1.1665 +
1.1666 + if (stroke.isFillStyle() || SkStrokeRec::kStrokeAndFill_Style == stroke.getStyle()) {
1.1667 + GL_CALL(StencilFillPath(id, fillMode, writeMask));
1.1668 + }
1.1669 + if (stroke.needToApply()) {
1.1670 + GL_CALL(StencilStrokePath(id, 0xffff, writeMask));
1.1671 + }
1.1672 +
1.1673 + if (nonInvertedFill == fill) {
1.1674 + if (stroke.needToApply()) {
1.1675 + GL_CALL(CoverStrokePath(id, GR_GL_BOUNDING_BOX));
1.1676 + } else {
1.1677 + GL_CALL(CoverFillPath(id, GR_GL_BOUNDING_BOX));
1.1678 + }
1.1679 + } else {
1.1680 + GrDrawState* drawState = this->drawState();
1.1681 + GrDrawState::AutoViewMatrixRestore avmr;
1.1682 + SkRect bounds = SkRect::MakeLTRB(0, 0,
1.1683 + SkIntToScalar(drawState->getRenderTarget()->width()),
1.1684 + SkIntToScalar(drawState->getRenderTarget()->height()));
1.1685 + SkMatrix vmi;
1.1686 + // mapRect through persp matrix may not be correct
1.1687 + if (!drawState->getViewMatrix().hasPerspective() && drawState->getViewInverse(&vmi)) {
1.1688 + vmi.mapRect(&bounds);
1.1689 + // theoretically could set bloat = 0, instead leave it because of matrix inversion
1.1690 + // precision.
1.1691 + SkScalar bloat = drawState->getViewMatrix().getMaxStretch() * SK_ScalarHalf;
1.1692 + bounds.outset(bloat, bloat);
1.1693 + } else {
1.1694 + avmr.setIdentity(drawState);
1.1695 + }
1.1696 +
1.1697 + this->drawSimpleRect(bounds, NULL);
1.1698 + }
1.1699 +}
1.1700 +
1.1701 +void GrGpuGL::onResolveRenderTarget(GrRenderTarget* target) {
1.1702 + GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(target);
1.1703 + if (rt->needsResolve()) {
1.1704 + // Some extensions automatically resolves the texture when it is read.
1.1705 + if (this->glCaps().usesMSAARenderBuffers()) {
1.1706 + SkASSERT(rt->textureFBOID() != rt->renderFBOID());
1.1707 + GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER, rt->renderFBOID()));
1.1708 + GL_CALL(BindFramebuffer(GR_GL_DRAW_FRAMEBUFFER, rt->textureFBOID()));
1.1709 + // make sure we go through flushRenderTarget() since we've modified
1.1710 + // the bound DRAW FBO ID.
1.1711 + fHWBoundRenderTarget = NULL;
1.1712 + const GrGLIRect& vp = rt->getViewport();
1.1713 + const SkIRect dirtyRect = rt->getResolveRect();
1.1714 + GrGLIRect r;
1.1715 + r.setRelativeTo(vp, dirtyRect.fLeft, dirtyRect.fTop,
1.1716 + dirtyRect.width(), dirtyRect.height(), target->origin());
1.1717 +
1.1718 + GrAutoTRestore<ScissorState> asr;
1.1719 + if (GrGLCaps::kES_Apple_MSFBOType == this->glCaps().msFBOType()) {
1.1720 + // Apple's extension uses the scissor as the blit bounds.
1.1721 + asr.reset(&fScissorState);
1.1722 + fScissorState.fEnabled = true;
1.1723 + fScissorState.fRect = dirtyRect;
1.1724 + this->flushScissor();
1.1725 + GL_CALL(ResolveMultisampleFramebuffer());
1.1726 + } else {
1.1727 + if (GrGLCaps::kDesktop_EXT_MSFBOType == this->glCaps().msFBOType()) {
1.1728 + // this respects the scissor during the blit, so disable it.
1.1729 + asr.reset(&fScissorState);
1.1730 + fScissorState.fEnabled = false;
1.1731 + this->flushScissor();
1.1732 + }
1.1733 + int right = r.fLeft + r.fWidth;
1.1734 + int top = r.fBottom + r.fHeight;
1.1735 + GL_CALL(BlitFramebuffer(r.fLeft, r.fBottom, right, top,
1.1736 + r.fLeft, r.fBottom, right, top,
1.1737 + GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST));
1.1738 + }
1.1739 + }
1.1740 + rt->flagAsResolved();
1.1741 + }
1.1742 +}
1.1743 +
1.1744 +namespace {
1.1745 +
1.1746 +GrGLenum gr_to_gl_stencil_func(GrStencilFunc basicFunc) {
1.1747 + static const GrGLenum gTable[] = {
1.1748 + GR_GL_ALWAYS, // kAlways_StencilFunc
1.1749 + GR_GL_NEVER, // kNever_StencilFunc
1.1750 + GR_GL_GREATER, // kGreater_StencilFunc
1.1751 + GR_GL_GEQUAL, // kGEqual_StencilFunc
1.1752 + GR_GL_LESS, // kLess_StencilFunc
1.1753 + GR_GL_LEQUAL, // kLEqual_StencilFunc,
1.1754 + GR_GL_EQUAL, // kEqual_StencilFunc,
1.1755 + GR_GL_NOTEQUAL, // kNotEqual_StencilFunc,
1.1756 + };
1.1757 + GR_STATIC_ASSERT(GR_ARRAY_COUNT(gTable) == kBasicStencilFuncCount);
1.1758 + GR_STATIC_ASSERT(0 == kAlways_StencilFunc);
1.1759 + GR_STATIC_ASSERT(1 == kNever_StencilFunc);
1.1760 + GR_STATIC_ASSERT(2 == kGreater_StencilFunc);
1.1761 + GR_STATIC_ASSERT(3 == kGEqual_StencilFunc);
1.1762 + GR_STATIC_ASSERT(4 == kLess_StencilFunc);
1.1763 + GR_STATIC_ASSERT(5 == kLEqual_StencilFunc);
1.1764 + GR_STATIC_ASSERT(6 == kEqual_StencilFunc);
1.1765 + GR_STATIC_ASSERT(7 == kNotEqual_StencilFunc);
1.1766 + SkASSERT((unsigned) basicFunc < kBasicStencilFuncCount);
1.1767 +
1.1768 + return gTable[basicFunc];
1.1769 +}
1.1770 +
1.1771 +GrGLenum gr_to_gl_stencil_op(GrStencilOp op) {
1.1772 + static const GrGLenum gTable[] = {
1.1773 + GR_GL_KEEP, // kKeep_StencilOp
1.1774 + GR_GL_REPLACE, // kReplace_StencilOp
1.1775 + GR_GL_INCR_WRAP, // kIncWrap_StencilOp
1.1776 + GR_GL_INCR, // kIncClamp_StencilOp
1.1777 + GR_GL_DECR_WRAP, // kDecWrap_StencilOp
1.1778 + GR_GL_DECR, // kDecClamp_StencilOp
1.1779 + GR_GL_ZERO, // kZero_StencilOp
1.1780 + GR_GL_INVERT, // kInvert_StencilOp
1.1781 + };
1.1782 + GR_STATIC_ASSERT(GR_ARRAY_COUNT(gTable) == kStencilOpCount);
1.1783 + GR_STATIC_ASSERT(0 == kKeep_StencilOp);
1.1784 + GR_STATIC_ASSERT(1 == kReplace_StencilOp);
1.1785 + GR_STATIC_ASSERT(2 == kIncWrap_StencilOp);
1.1786 + GR_STATIC_ASSERT(3 == kIncClamp_StencilOp);
1.1787 + GR_STATIC_ASSERT(4 == kDecWrap_StencilOp);
1.1788 + GR_STATIC_ASSERT(5 == kDecClamp_StencilOp);
1.1789 + GR_STATIC_ASSERT(6 == kZero_StencilOp);
1.1790 + GR_STATIC_ASSERT(7 == kInvert_StencilOp);
1.1791 + SkASSERT((unsigned) op < kStencilOpCount);
1.1792 + return gTable[op];
1.1793 +}
1.1794 +
1.1795 +void set_gl_stencil(const GrGLInterface* gl,
1.1796 + const GrStencilSettings& settings,
1.1797 + GrGLenum glFace,
1.1798 + GrStencilSettings::Face grFace) {
1.1799 + GrGLenum glFunc = gr_to_gl_stencil_func(settings.func(grFace));
1.1800 + GrGLenum glFailOp = gr_to_gl_stencil_op(settings.failOp(grFace));
1.1801 + GrGLenum glPassOp = gr_to_gl_stencil_op(settings.passOp(grFace));
1.1802 +
1.1803 + GrGLint ref = settings.funcRef(grFace);
1.1804 + GrGLint mask = settings.funcMask(grFace);
1.1805 + GrGLint writeMask = settings.writeMask(grFace);
1.1806 +
1.1807 + if (GR_GL_FRONT_AND_BACK == glFace) {
1.1808 + // we call the combined func just in case separate stencil is not
1.1809 + // supported.
1.1810 + GR_GL_CALL(gl, StencilFunc(glFunc, ref, mask));
1.1811 + GR_GL_CALL(gl, StencilMask(writeMask));
1.1812 + GR_GL_CALL(gl, StencilOp(glFailOp, glPassOp, glPassOp));
1.1813 + } else {
1.1814 + GR_GL_CALL(gl, StencilFuncSeparate(glFace, glFunc, ref, mask));
1.1815 + GR_GL_CALL(gl, StencilMaskSeparate(glFace, writeMask));
1.1816 + GR_GL_CALL(gl, StencilOpSeparate(glFace, glFailOp, glPassOp, glPassOp));
1.1817 + }
1.1818 +}
1.1819 +}
1.1820 +
1.1821 +void GrGpuGL::flushStencil(DrawType type) {
1.1822 + if (kStencilPath_DrawType != type && fHWStencilSettings != fStencilSettings) {
1.1823 + if (fStencilSettings.isDisabled()) {
1.1824 + if (kNo_TriState != fHWStencilTestEnabled) {
1.1825 + GL_CALL(Disable(GR_GL_STENCIL_TEST));
1.1826 + fHWStencilTestEnabled = kNo_TriState;
1.1827 + }
1.1828 + } else {
1.1829 + if (kYes_TriState != fHWStencilTestEnabled) {
1.1830 + GL_CALL(Enable(GR_GL_STENCIL_TEST));
1.1831 + fHWStencilTestEnabled = kYes_TriState;
1.1832 + }
1.1833 + }
1.1834 + if (!fStencilSettings.isDisabled()) {
1.1835 + if (this->caps()->twoSidedStencilSupport()) {
1.1836 + set_gl_stencil(this->glInterface(),
1.1837 + fStencilSettings,
1.1838 + GR_GL_FRONT,
1.1839 + GrStencilSettings::kFront_Face);
1.1840 + set_gl_stencil(this->glInterface(),
1.1841 + fStencilSettings,
1.1842 + GR_GL_BACK,
1.1843 + GrStencilSettings::kBack_Face);
1.1844 + } else {
1.1845 + set_gl_stencil(this->glInterface(),
1.1846 + fStencilSettings,
1.1847 + GR_GL_FRONT_AND_BACK,
1.1848 + GrStencilSettings::kFront_Face);
1.1849 + }
1.1850 + }
1.1851 + fHWStencilSettings = fStencilSettings;
1.1852 + }
1.1853 +}
1.1854 +
1.1855 +void GrGpuGL::flushAAState(DrawType type) {
1.1856 +// At least some ATI linux drivers will render GL_LINES incorrectly when MSAA state is enabled but
1.1857 +// the target is not multisampled. Single pixel wide lines are rendered thicker than 1 pixel wide.
1.1858 +#if 0
1.1859 + // Replace RT_HAS_MSAA with this definition once this driver bug is no longer a relevant concern
1.1860 + #define RT_HAS_MSAA rt->isMultisampled()
1.1861 +#else
1.1862 + #define RT_HAS_MSAA (rt->isMultisampled() || kDrawLines_DrawType == type)
1.1863 +#endif
1.1864 +
1.1865 + const GrRenderTarget* rt = this->getDrawState().getRenderTarget();
1.1866 + if (kGL_GrGLStandard == this->glStandard()) {
1.1867 + // ES doesn't support toggling GL_MULTISAMPLE and doesn't have
1.1868 + // smooth lines.
1.1869 + // we prefer smooth lines over multisampled lines
1.1870 + bool smoothLines = false;
1.1871 +
1.1872 + if (kDrawLines_DrawType == type) {
1.1873 + smoothLines = this->willUseHWAALines();
1.1874 + if (smoothLines) {
1.1875 + if (kYes_TriState != fHWAAState.fSmoothLineEnabled) {
1.1876 + GL_CALL(Enable(GR_GL_LINE_SMOOTH));
1.1877 + fHWAAState.fSmoothLineEnabled = kYes_TriState;
1.1878 + // must disable msaa to use line smoothing
1.1879 + if (RT_HAS_MSAA &&
1.1880 + kNo_TriState != fHWAAState.fMSAAEnabled) {
1.1881 + GL_CALL(Disable(GR_GL_MULTISAMPLE));
1.1882 + fHWAAState.fMSAAEnabled = kNo_TriState;
1.1883 + }
1.1884 + }
1.1885 + } else {
1.1886 + if (kNo_TriState != fHWAAState.fSmoothLineEnabled) {
1.1887 + GL_CALL(Disable(GR_GL_LINE_SMOOTH));
1.1888 + fHWAAState.fSmoothLineEnabled = kNo_TriState;
1.1889 + }
1.1890 + }
1.1891 + }
1.1892 + if (!smoothLines && RT_HAS_MSAA) {
1.1893 + // FIXME: GL_NV_pr doesn't seem to like MSAA disabled. The paths
1.1894 + // convex hulls of each segment appear to get filled.
1.1895 + bool enableMSAA = kStencilPath_DrawType == type ||
1.1896 + this->getDrawState().isHWAntialiasState();
1.1897 + if (enableMSAA) {
1.1898 + if (kYes_TriState != fHWAAState.fMSAAEnabled) {
1.1899 + GL_CALL(Enable(GR_GL_MULTISAMPLE));
1.1900 + fHWAAState.fMSAAEnabled = kYes_TriState;
1.1901 + }
1.1902 + } else {
1.1903 + if (kNo_TriState != fHWAAState.fMSAAEnabled) {
1.1904 + GL_CALL(Disable(GR_GL_MULTISAMPLE));
1.1905 + fHWAAState.fMSAAEnabled = kNo_TriState;
1.1906 + }
1.1907 + }
1.1908 + }
1.1909 + }
1.1910 +}
1.1911 +
1.1912 +void GrGpuGL::flushPathStencilSettings(SkPath::FillType fill) {
1.1913 + GrStencilSettings pathStencilSettings;
1.1914 + this->getPathStencilSettingsForFillType(fill, &pathStencilSettings);
1.1915 + if (fHWPathStencilSettings != pathStencilSettings) {
1.1916 + // Just the func, ref, and mask is set here. The op and write mask are params to the call
1.1917 + // that draws the path to the SB (glStencilFillPath)
1.1918 + GrGLenum func =
1.1919 + gr_to_gl_stencil_func(pathStencilSettings.func(GrStencilSettings::kFront_Face));
1.1920 + GL_CALL(PathStencilFunc(func,
1.1921 + pathStencilSettings.funcRef(GrStencilSettings::kFront_Face),
1.1922 + pathStencilSettings.funcMask(GrStencilSettings::kFront_Face)));
1.1923 +
1.1924 + fHWPathStencilSettings = pathStencilSettings;
1.1925 + }
1.1926 +}
1.1927 +
1.1928 +void GrGpuGL::flushBlend(bool isLines,
1.1929 + GrBlendCoeff srcCoeff,
1.1930 + GrBlendCoeff dstCoeff) {
1.1931 + if (isLines && this->willUseHWAALines()) {
1.1932 + if (kYes_TriState != fHWBlendState.fEnabled) {
1.1933 + GL_CALL(Enable(GR_GL_BLEND));
1.1934 + fHWBlendState.fEnabled = kYes_TriState;
1.1935 + }
1.1936 + if (kSA_GrBlendCoeff != fHWBlendState.fSrcCoeff ||
1.1937 + kISA_GrBlendCoeff != fHWBlendState.fDstCoeff) {
1.1938 + GL_CALL(BlendFunc(gXfermodeCoeff2Blend[kSA_GrBlendCoeff],
1.1939 + gXfermodeCoeff2Blend[kISA_GrBlendCoeff]));
1.1940 + fHWBlendState.fSrcCoeff = kSA_GrBlendCoeff;
1.1941 + fHWBlendState.fDstCoeff = kISA_GrBlendCoeff;
1.1942 + }
1.1943 + } else {
1.1944 + // any optimization to disable blending should
1.1945 + // have already been applied and tweaked the coeffs
1.1946 + // to (1, 0).
1.1947 + bool blendOff = kOne_GrBlendCoeff == srcCoeff &&
1.1948 + kZero_GrBlendCoeff == dstCoeff;
1.1949 + if (blendOff) {
1.1950 + if (kNo_TriState != fHWBlendState.fEnabled) {
1.1951 + GL_CALL(Disable(GR_GL_BLEND));
1.1952 + fHWBlendState.fEnabled = kNo_TriState;
1.1953 + }
1.1954 + } else {
1.1955 + if (kYes_TriState != fHWBlendState.fEnabled) {
1.1956 + GL_CALL(Enable(GR_GL_BLEND));
1.1957 + fHWBlendState.fEnabled = kYes_TriState;
1.1958 + }
1.1959 + if (fHWBlendState.fSrcCoeff != srcCoeff ||
1.1960 + fHWBlendState.fDstCoeff != dstCoeff) {
1.1961 + GL_CALL(BlendFunc(gXfermodeCoeff2Blend[srcCoeff],
1.1962 + gXfermodeCoeff2Blend[dstCoeff]));
1.1963 + fHWBlendState.fSrcCoeff = srcCoeff;
1.1964 + fHWBlendState.fDstCoeff = dstCoeff;
1.1965 + }
1.1966 + GrColor blendConst = this->getDrawState().getBlendConstant();
1.1967 + if ((BlendCoeffReferencesConstant(srcCoeff) ||
1.1968 + BlendCoeffReferencesConstant(dstCoeff)) &&
1.1969 + (!fHWBlendState.fConstColorValid ||
1.1970 + fHWBlendState.fConstColor != blendConst)) {
1.1971 + GrGLfloat c[4];
1.1972 + GrColorToRGBAFloat(blendConst, c);
1.1973 + GL_CALL(BlendColor(c[0], c[1], c[2], c[3]));
1.1974 + fHWBlendState.fConstColor = blendConst;
1.1975 + fHWBlendState.fConstColorValid = true;
1.1976 + }
1.1977 + }
1.1978 + }
1.1979 +}
1.1980 +
1.1981 +static inline GrGLenum tile_to_gl_wrap(SkShader::TileMode tm) {
1.1982 + static const GrGLenum gWrapModes[] = {
1.1983 + GR_GL_CLAMP_TO_EDGE,
1.1984 + GR_GL_REPEAT,
1.1985 + GR_GL_MIRRORED_REPEAT
1.1986 + };
1.1987 + GR_STATIC_ASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gWrapModes));
1.1988 + GR_STATIC_ASSERT(0 == SkShader::kClamp_TileMode);
1.1989 + GR_STATIC_ASSERT(1 == SkShader::kRepeat_TileMode);
1.1990 + GR_STATIC_ASSERT(2 == SkShader::kMirror_TileMode);
1.1991 + return gWrapModes[tm];
1.1992 +}
1.1993 +
1.1994 +void GrGpuGL::bindTexture(int unitIdx, const GrTextureParams& params, GrGLTexture* texture) {
1.1995 + SkASSERT(NULL != texture);
1.1996 +
1.1997 + // If we created a rt/tex and rendered to it without using a texture and now we're texturing
1.1998 + // from the rt it will still be the last bound texture, but it needs resolving. So keep this
1.1999 + // out of the "last != next" check.
1.2000 + GrGLRenderTarget* texRT = static_cast<GrGLRenderTarget*>(texture->asRenderTarget());
1.2001 + if (NULL != texRT) {
1.2002 + this->onResolveRenderTarget(texRT);
1.2003 + }
1.2004 +
1.2005 + if (fHWBoundTextures[unitIdx] != texture) {
1.2006 + this->setTextureUnit(unitIdx);
1.2007 + GL_CALL(BindTexture(GR_GL_TEXTURE_2D, texture->textureID()));
1.2008 + fHWBoundTextures[unitIdx] = texture;
1.2009 + }
1.2010 +
1.2011 + ResetTimestamp timestamp;
1.2012 + const GrGLTexture::TexParams& oldTexParams = texture->getCachedTexParams(×tamp);
1.2013 + bool setAll = timestamp < this->getResetTimestamp();
1.2014 + GrGLTexture::TexParams newTexParams;
1.2015 +
1.2016 + static GrGLenum glMinFilterModes[] = {
1.2017 + GR_GL_NEAREST,
1.2018 + GR_GL_LINEAR,
1.2019 + GR_GL_LINEAR_MIPMAP_LINEAR
1.2020 + };
1.2021 + static GrGLenum glMagFilterModes[] = {
1.2022 + GR_GL_NEAREST,
1.2023 + GR_GL_LINEAR,
1.2024 + GR_GL_LINEAR
1.2025 + };
1.2026 + GrTextureParams::FilterMode filterMode = params.filterMode();
1.2027 + if (!this->caps()->mipMapSupport() && GrTextureParams::kMipMap_FilterMode == filterMode) {
1.2028 + filterMode = GrTextureParams::kBilerp_FilterMode;
1.2029 + }
1.2030 + newTexParams.fMinFilter = glMinFilterModes[filterMode];
1.2031 + newTexParams.fMagFilter = glMagFilterModes[filterMode];
1.2032 +
1.2033 + if (GrTextureParams::kMipMap_FilterMode == filterMode && texture->mipMapsAreDirty()) {
1.2034 +// GL_CALL(Hint(GR_GL_GENERATE_MIPMAP_HINT,GR_GL_NICEST));
1.2035 + GL_CALL(GenerateMipmap(GR_GL_TEXTURE_2D));
1.2036 + texture->dirtyMipMaps(false);
1.2037 + }
1.2038 +
1.2039 + newTexParams.fWrapS = tile_to_gl_wrap(params.getTileModeX());
1.2040 + newTexParams.fWrapT = tile_to_gl_wrap(params.getTileModeY());
1.2041 + memcpy(newTexParams.fSwizzleRGBA,
1.2042 + GrGLShaderBuilder::GetTexParamSwizzle(texture->config(), this->glCaps()),
1.2043 + sizeof(newTexParams.fSwizzleRGBA));
1.2044 + if (setAll || newTexParams.fMagFilter != oldTexParams.fMagFilter) {
1.2045 + this->setTextureUnit(unitIdx);
1.2046 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
1.2047 + GR_GL_TEXTURE_MAG_FILTER,
1.2048 + newTexParams.fMagFilter));
1.2049 + }
1.2050 + if (setAll || newTexParams.fMinFilter != oldTexParams.fMinFilter) {
1.2051 + this->setTextureUnit(unitIdx);
1.2052 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
1.2053 + GR_GL_TEXTURE_MIN_FILTER,
1.2054 + newTexParams.fMinFilter));
1.2055 + }
1.2056 + if (setAll || newTexParams.fWrapS != oldTexParams.fWrapS) {
1.2057 + this->setTextureUnit(unitIdx);
1.2058 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
1.2059 + GR_GL_TEXTURE_WRAP_S,
1.2060 + newTexParams.fWrapS));
1.2061 + }
1.2062 + if (setAll || newTexParams.fWrapT != oldTexParams.fWrapT) {
1.2063 + this->setTextureUnit(unitIdx);
1.2064 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
1.2065 + GR_GL_TEXTURE_WRAP_T,
1.2066 + newTexParams.fWrapT));
1.2067 + }
1.2068 + if (this->glCaps().textureSwizzleSupport() &&
1.2069 + (setAll || memcmp(newTexParams.fSwizzleRGBA,
1.2070 + oldTexParams.fSwizzleRGBA,
1.2071 + sizeof(newTexParams.fSwizzleRGBA)))) {
1.2072 + this->setTextureUnit(unitIdx);
1.2073 + if (this->glStandard() == kGLES_GrGLStandard) {
1.2074 + // ES3 added swizzle support but not GL_TEXTURE_SWIZZLE_RGBA.
1.2075 + const GrGLenum* swizzle = newTexParams.fSwizzleRGBA;
1.2076 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_R, swizzle[0]));
1.2077 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_G, swizzle[1]));
1.2078 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_B, swizzle[2]));
1.2079 + GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_A, swizzle[3]));
1.2080 + } else {
1.2081 + GR_STATIC_ASSERT(sizeof(newTexParams.fSwizzleRGBA[0]) == sizeof(GrGLint));
1.2082 + const GrGLint* swizzle = reinterpret_cast<const GrGLint*>(newTexParams.fSwizzleRGBA);
1.2083 + GL_CALL(TexParameteriv(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_RGBA, swizzle));
1.2084 + }
1.2085 + }
1.2086 + texture->setCachedTexParams(newTexParams, this->getResetTimestamp());
1.2087 +}
1.2088 +
1.2089 +void GrGpuGL::setProjectionMatrix(const SkMatrix& matrix,
1.2090 + const SkISize& renderTargetSize,
1.2091 + GrSurfaceOrigin renderTargetOrigin) {
1.2092 +
1.2093 + SkASSERT(this->glCaps().fixedFunctionSupport());
1.2094 +
1.2095 + if (renderTargetOrigin == fHWProjectionMatrixState.fRenderTargetOrigin &&
1.2096 + renderTargetSize == fHWProjectionMatrixState.fRenderTargetSize &&
1.2097 + matrix.cheapEqualTo(fHWProjectionMatrixState.fViewMatrix)) {
1.2098 + return;
1.2099 + }
1.2100 +
1.2101 + fHWProjectionMatrixState.fViewMatrix = matrix;
1.2102 + fHWProjectionMatrixState.fRenderTargetSize = renderTargetSize;
1.2103 + fHWProjectionMatrixState.fRenderTargetOrigin = renderTargetOrigin;
1.2104 +
1.2105 + GrGLfloat glMatrix[4 * 4];
1.2106 + fHWProjectionMatrixState.getGLMatrix<4>(glMatrix);
1.2107 + GL_CALL(MatrixMode(GR_GL_PROJECTION));
1.2108 + GL_CALL(LoadMatrixf(glMatrix));
1.2109 +}
1.2110 +
1.2111 +void GrGpuGL::enableTexGen(int unitIdx,
1.2112 + TexGenComponents components,
1.2113 + const GrGLfloat* coefficients) {
1.2114 + SkASSERT(this->glCaps().fixedFunctionSupport());
1.2115 + SkASSERT(components >= kS_TexGenComponents && components <= kSTR_TexGenComponents);
1.2116 + SkASSERT(this->glCaps().maxFixedFunctionTextureCoords() >= unitIdx);
1.2117 +
1.2118 + if (GR_GL_OBJECT_LINEAR == fHWTexGenSettings[unitIdx].fMode &&
1.2119 + components == fHWTexGenSettings[unitIdx].fNumComponents &&
1.2120 + !memcmp(coefficients, fHWTexGenSettings[unitIdx].fCoefficients,
1.2121 + 3 * components * sizeof(GrGLfloat))) {
1.2122 + return;
1.2123 + }
1.2124 +
1.2125 + this->setTextureUnit(unitIdx);
1.2126 +
1.2127 + if (GR_GL_OBJECT_LINEAR != fHWTexGenSettings[unitIdx].fMode) {
1.2128 + for (int i = 0; i < 4; i++) {
1.2129 + GL_CALL(TexGeni(GR_GL_S + i, GR_GL_TEXTURE_GEN_MODE, GR_GL_OBJECT_LINEAR));
1.2130 + }
1.2131 + fHWTexGenSettings[unitIdx].fMode = GR_GL_OBJECT_LINEAR;
1.2132 + }
1.2133 +
1.2134 + for (int i = fHWTexGenSettings[unitIdx].fNumComponents; i < components; i++) {
1.2135 + GL_CALL(Enable(GR_GL_TEXTURE_GEN_S + i));
1.2136 + }
1.2137 + for (int i = components; i < fHWTexGenSettings[unitIdx].fNumComponents; i++) {
1.2138 + GL_CALL(Disable(GR_GL_TEXTURE_GEN_S + i));
1.2139 + }
1.2140 + fHWTexGenSettings[unitIdx].fNumComponents = components;
1.2141 +
1.2142 + for (int i = 0; i < components; i++) {
1.2143 + GrGLfloat plane[] = {coefficients[0 + 3 * i],
1.2144 + coefficients[1 + 3 * i],
1.2145 + 0,
1.2146 + coefficients[2 + 3 * i]};
1.2147 + GL_CALL(TexGenfv(GR_GL_S + i, GR_GL_OBJECT_PLANE, plane));
1.2148 + }
1.2149 +
1.2150 + if (this->caps()->pathRenderingSupport()) {
1.2151 + GL_CALL(PathTexGen(GR_GL_TEXTURE0 + unitIdx,
1.2152 + GR_GL_OBJECT_LINEAR,
1.2153 + components,
1.2154 + coefficients));
1.2155 + }
1.2156 +
1.2157 + memcpy(fHWTexGenSettings[unitIdx].fCoefficients, coefficients,
1.2158 + 3 * components * sizeof(GrGLfloat));
1.2159 +}
1.2160 +
1.2161 +void GrGpuGL::enableTexGen(int unitIdx, TexGenComponents components, const SkMatrix& matrix) {
1.2162 + GrGLfloat coefficients[3 * 3];
1.2163 + SkASSERT(this->glCaps().fixedFunctionSupport());
1.2164 + SkASSERT(components >= kS_TexGenComponents && components <= kSTR_TexGenComponents);
1.2165 +
1.2166 + coefficients[0] = SkScalarToFloat(matrix[SkMatrix::kMScaleX]);
1.2167 + coefficients[1] = SkScalarToFloat(matrix[SkMatrix::kMSkewX]);
1.2168 + coefficients[2] = SkScalarToFloat(matrix[SkMatrix::kMTransX]);
1.2169 +
1.2170 + if (components >= kST_TexGenComponents) {
1.2171 + coefficients[3] = SkScalarToFloat(matrix[SkMatrix::kMSkewY]);
1.2172 + coefficients[4] = SkScalarToFloat(matrix[SkMatrix::kMScaleY]);
1.2173 + coefficients[5] = SkScalarToFloat(matrix[SkMatrix::kMTransY]);
1.2174 + }
1.2175 +
1.2176 + if (components >= kSTR_TexGenComponents) {
1.2177 + coefficients[6] = SkScalarToFloat(matrix[SkMatrix::kMPersp0]);
1.2178 + coefficients[7] = SkScalarToFloat(matrix[SkMatrix::kMPersp1]);
1.2179 + coefficients[8] = SkScalarToFloat(matrix[SkMatrix::kMPersp2]);
1.2180 + }
1.2181 +
1.2182 + enableTexGen(unitIdx, components, coefficients);
1.2183 +}
1.2184 +
1.2185 +void GrGpuGL::flushTexGenSettings(int numUsedTexCoordSets) {
1.2186 + SkASSERT(this->glCaps().fixedFunctionSupport());
1.2187 + SkASSERT(this->glCaps().maxFixedFunctionTextureCoords() >= numUsedTexCoordSets);
1.2188 +
1.2189 + // Only write the inactive tex gens, since active tex gens were written
1.2190 + // when they were enabled.
1.2191 +
1.2192 + SkDEBUGCODE(
1.2193 + for (int i = 0; i < numUsedTexCoordSets; i++) {
1.2194 + SkASSERT(0 != fHWTexGenSettings[i].fNumComponents);
1.2195 + }
1.2196 + );
1.2197 +
1.2198 + for (int i = numUsedTexCoordSets; i < fHWActiveTexGenSets; i++) {
1.2199 + SkASSERT(0 != fHWTexGenSettings[i].fNumComponents);
1.2200 +
1.2201 + this->setTextureUnit(i);
1.2202 + for (int j = 0; j < fHWTexGenSettings[i].fNumComponents; j++) {
1.2203 + GL_CALL(Disable(GR_GL_TEXTURE_GEN_S + j));
1.2204 + }
1.2205 +
1.2206 + if (this->caps()->pathRenderingSupport()) {
1.2207 + GL_CALL(PathTexGen(GR_GL_TEXTURE0 + i, GR_GL_NONE, 0, NULL));
1.2208 + }
1.2209 +
1.2210 + fHWTexGenSettings[i].fNumComponents = 0;
1.2211 + }
1.2212 +
1.2213 + fHWActiveTexGenSets = numUsedTexCoordSets;
1.2214 +}
1.2215 +
1.2216 +void GrGpuGL::flushMiscFixedFunctionState() {
1.2217 +
1.2218 + const GrDrawState& drawState = this->getDrawState();
1.2219 +
1.2220 + if (drawState.isDitherState()) {
1.2221 + if (kYes_TriState != fHWDitherEnabled) {
1.2222 + GL_CALL(Enable(GR_GL_DITHER));
1.2223 + fHWDitherEnabled = kYes_TriState;
1.2224 + }
1.2225 + } else {
1.2226 + if (kNo_TriState != fHWDitherEnabled) {
1.2227 + GL_CALL(Disable(GR_GL_DITHER));
1.2228 + fHWDitherEnabled = kNo_TriState;
1.2229 + }
1.2230 + }
1.2231 +
1.2232 + if (drawState.isColorWriteDisabled()) {
1.2233 + if (kNo_TriState != fHWWriteToColor) {
1.2234 + GL_CALL(ColorMask(GR_GL_FALSE, GR_GL_FALSE,
1.2235 + GR_GL_FALSE, GR_GL_FALSE));
1.2236 + fHWWriteToColor = kNo_TriState;
1.2237 + }
1.2238 + } else {
1.2239 + if (kYes_TriState != fHWWriteToColor) {
1.2240 + GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE));
1.2241 + fHWWriteToColor = kYes_TriState;
1.2242 + }
1.2243 + }
1.2244 +
1.2245 + if (fHWDrawFace != drawState.getDrawFace()) {
1.2246 + switch (this->getDrawState().getDrawFace()) {
1.2247 + case GrDrawState::kCCW_DrawFace:
1.2248 + GL_CALL(Enable(GR_GL_CULL_FACE));
1.2249 + GL_CALL(CullFace(GR_GL_BACK));
1.2250 + break;
1.2251 + case GrDrawState::kCW_DrawFace:
1.2252 + GL_CALL(Enable(GR_GL_CULL_FACE));
1.2253 + GL_CALL(CullFace(GR_GL_FRONT));
1.2254 + break;
1.2255 + case GrDrawState::kBoth_DrawFace:
1.2256 + GL_CALL(Disable(GR_GL_CULL_FACE));
1.2257 + break;
1.2258 + default:
1.2259 + GrCrash("Unknown draw face.");
1.2260 + }
1.2261 + fHWDrawFace = drawState.getDrawFace();
1.2262 + }
1.2263 +}
1.2264 +
1.2265 +void GrGpuGL::notifyRenderTargetDelete(GrRenderTarget* renderTarget) {
1.2266 + SkASSERT(NULL != renderTarget);
1.2267 + if (fHWBoundRenderTarget == renderTarget) {
1.2268 + fHWBoundRenderTarget = NULL;
1.2269 + }
1.2270 +}
1.2271 +
1.2272 +void GrGpuGL::notifyTextureDelete(GrGLTexture* texture) {
1.2273 + for (int s = 0; s < fHWBoundTextures.count(); ++s) {
1.2274 + if (fHWBoundTextures[s] == texture) {
1.2275 + // deleting bound texture does implied bind to 0
1.2276 + fHWBoundTextures[s] = NULL;
1.2277 + }
1.2278 + }
1.2279 +}
1.2280 +
1.2281 +bool GrGpuGL::configToGLFormats(GrPixelConfig config,
1.2282 + bool getSizedInternalFormat,
1.2283 + GrGLenum* internalFormat,
1.2284 + GrGLenum* externalFormat,
1.2285 + GrGLenum* externalType) {
1.2286 + GrGLenum dontCare;
1.2287 + if (NULL == internalFormat) {
1.2288 + internalFormat = &dontCare;
1.2289 + }
1.2290 + if (NULL == externalFormat) {
1.2291 + externalFormat = &dontCare;
1.2292 + }
1.2293 + if (NULL == externalType) {
1.2294 + externalType = &dontCare;
1.2295 + }
1.2296 +
1.2297 + switch (config) {
1.2298 + case kRGBA_8888_GrPixelConfig:
1.2299 + *internalFormat = GR_GL_RGBA;
1.2300 + *externalFormat = GR_GL_RGBA;
1.2301 + if (getSizedInternalFormat) {
1.2302 + *internalFormat = GR_GL_RGBA8;
1.2303 + } else {
1.2304 + *internalFormat = GR_GL_RGBA;
1.2305 + }
1.2306 + *externalType = GR_GL_UNSIGNED_BYTE;
1.2307 + break;
1.2308 + case kBGRA_8888_GrPixelConfig:
1.2309 + if (!this->glCaps().bgraFormatSupport()) {
1.2310 + return false;
1.2311 + }
1.2312 + if (this->glCaps().bgraIsInternalFormat()) {
1.2313 + if (getSizedInternalFormat) {
1.2314 + *internalFormat = GR_GL_BGRA8;
1.2315 + } else {
1.2316 + *internalFormat = GR_GL_BGRA;
1.2317 + }
1.2318 + } else {
1.2319 + if (getSizedInternalFormat) {
1.2320 + *internalFormat = GR_GL_RGBA8;
1.2321 + } else {
1.2322 + *internalFormat = GR_GL_RGBA;
1.2323 + }
1.2324 + }
1.2325 + *externalFormat = GR_GL_BGRA;
1.2326 + *externalType = GR_GL_UNSIGNED_BYTE;
1.2327 + break;
1.2328 + case kRGB_565_GrPixelConfig:
1.2329 + *internalFormat = GR_GL_RGB;
1.2330 + *externalFormat = GR_GL_RGB;
1.2331 + if (getSizedInternalFormat) {
1.2332 + if (this->glStandard() == kGL_GrGLStandard) {
1.2333 + return false;
1.2334 + } else {
1.2335 + *internalFormat = GR_GL_RGB565;
1.2336 + }
1.2337 + } else {
1.2338 + *internalFormat = GR_GL_RGB;
1.2339 + }
1.2340 + *externalType = GR_GL_UNSIGNED_SHORT_5_6_5;
1.2341 + break;
1.2342 + case kRGBA_4444_GrPixelConfig:
1.2343 + *internalFormat = GR_GL_RGBA;
1.2344 + *externalFormat = GR_GL_RGBA;
1.2345 + if (getSizedInternalFormat) {
1.2346 + *internalFormat = GR_GL_RGBA4;
1.2347 + } else {
1.2348 + *internalFormat = GR_GL_RGBA;
1.2349 + }
1.2350 + *externalType = GR_GL_UNSIGNED_SHORT_4_4_4_4;
1.2351 + break;
1.2352 + case kIndex_8_GrPixelConfig:
1.2353 + if (this->caps()->eightBitPaletteSupport()) {
1.2354 + *internalFormat = GR_GL_PALETTE8_RGBA8;
1.2355 + // glCompressedTexImage doesn't take external params
1.2356 + *externalFormat = GR_GL_PALETTE8_RGBA8;
1.2357 + // no sized/unsized internal format distinction here
1.2358 + *internalFormat = GR_GL_PALETTE8_RGBA8;
1.2359 + // unused with CompressedTexImage
1.2360 + *externalType = GR_GL_UNSIGNED_BYTE;
1.2361 + } else {
1.2362 + return false;
1.2363 + }
1.2364 + break;
1.2365 + case kAlpha_8_GrPixelConfig:
1.2366 + if (this->glCaps().textureRedSupport()) {
1.2367 + *internalFormat = GR_GL_RED;
1.2368 + *externalFormat = GR_GL_RED;
1.2369 + if (getSizedInternalFormat) {
1.2370 + *internalFormat = GR_GL_R8;
1.2371 + } else {
1.2372 + *internalFormat = GR_GL_RED;
1.2373 + }
1.2374 + *externalType = GR_GL_UNSIGNED_BYTE;
1.2375 + } else {
1.2376 + *internalFormat = GR_GL_ALPHA;
1.2377 + *externalFormat = GR_GL_ALPHA;
1.2378 + if (getSizedInternalFormat) {
1.2379 + *internalFormat = GR_GL_ALPHA8;
1.2380 + } else {
1.2381 + *internalFormat = GR_GL_ALPHA;
1.2382 + }
1.2383 + *externalType = GR_GL_UNSIGNED_BYTE;
1.2384 + }
1.2385 + break;
1.2386 + default:
1.2387 + return false;
1.2388 + }
1.2389 + return true;
1.2390 +}
1.2391 +
1.2392 +void GrGpuGL::setTextureUnit(int unit) {
1.2393 + SkASSERT(unit >= 0 && unit < fHWBoundTextures.count());
1.2394 + if (unit != fHWActiveTextureUnitIdx) {
1.2395 + GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + unit));
1.2396 + fHWActiveTextureUnitIdx = unit;
1.2397 + }
1.2398 +}
1.2399 +
1.2400 +void GrGpuGL::setScratchTextureUnit() {
1.2401 + // Bind the last texture unit since it is the least likely to be used by GrGLProgram.
1.2402 + int lastUnitIdx = fHWBoundTextures.count() - 1;
1.2403 + if (lastUnitIdx != fHWActiveTextureUnitIdx) {
1.2404 + GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + lastUnitIdx));
1.2405 + fHWActiveTextureUnitIdx = lastUnitIdx;
1.2406 + }
1.2407 + // clear out the this field so that if a program does use this unit it will rebind the correct
1.2408 + // texture.
1.2409 + fHWBoundTextures[lastUnitIdx] = NULL;
1.2410 +}
1.2411 +
1.2412 +namespace {
1.2413 +// Determines whether glBlitFramebuffer could be used between src and dst.
1.2414 +inline bool can_blit_framebuffer(const GrSurface* dst,
1.2415 + const GrSurface* src,
1.2416 + const GrGpuGL* gpu,
1.2417 + bool* wouldNeedTempFBO = NULL) {
1.2418 + if (gpu->glCaps().isConfigRenderable(dst->config(), dst->desc().fSampleCnt > 0) &&
1.2419 + gpu->glCaps().isConfigRenderable(src->config(), src->desc().fSampleCnt > 0) &&
1.2420 + gpu->glCaps().usesMSAARenderBuffers()) {
1.2421 + // ES3 doesn't allow framebuffer blits when the src has MSAA and the configs don't match
1.2422 + // or the rects are not the same (not just the same size but have the same edges).
1.2423 + if (GrGLCaps::kES_3_0_MSFBOType == gpu->glCaps().msFBOType() &&
1.2424 + (src->desc().fSampleCnt > 0 || src->config() != dst->config())) {
1.2425 + return false;
1.2426 + }
1.2427 + if (NULL != wouldNeedTempFBO) {
1.2428 + *wouldNeedTempFBO = NULL == dst->asRenderTarget() || NULL == src->asRenderTarget();
1.2429 + }
1.2430 + return true;
1.2431 + } else {
1.2432 + return false;
1.2433 + }
1.2434 +}
1.2435 +
1.2436 +inline bool can_copy_texsubimage(const GrSurface* dst,
1.2437 + const GrSurface* src,
1.2438 + const GrGpuGL* gpu,
1.2439 + bool* wouldNeedTempFBO = NULL) {
1.2440 + // Table 3.9 of the ES2 spec indicates the supported formats with CopyTexSubImage
1.2441 + // and BGRA isn't in the spec. There doesn't appear to be any extension that adds it. Perhaps
1.2442 + // many drivers would allow it to work, but ANGLE does not.
1.2443 + if (kGLES_GrGLStandard == gpu->glStandard() && gpu->glCaps().bgraIsInternalFormat() &&
1.2444 + (kBGRA_8888_GrPixelConfig == dst->config() || kBGRA_8888_GrPixelConfig == src->config())) {
1.2445 + return false;
1.2446 + }
1.2447 + const GrGLRenderTarget* dstRT = static_cast<const GrGLRenderTarget*>(dst->asRenderTarget());
1.2448 + // If dst is multisampled (and uses an extension where there is a separate MSAA renderbuffer)
1.2449 + // then we don't want to copy to the texture but to the MSAA buffer.
1.2450 + if (NULL != dstRT && dstRT->renderFBOID() != dstRT->textureFBOID()) {
1.2451 + return false;
1.2452 + }
1.2453 + const GrGLRenderTarget* srcRT = static_cast<const GrGLRenderTarget*>(src->asRenderTarget());
1.2454 + // If the src is multisampled (and uses an extension where there is a separate MSAA
1.2455 + // renderbuffer) then it is an invalid operation to call CopyTexSubImage
1.2456 + if (NULL != srcRT && srcRT->renderFBOID() != srcRT->textureFBOID()) {
1.2457 + return false;
1.2458 + }
1.2459 + if (gpu->glCaps().isConfigRenderable(src->config(), src->desc().fSampleCnt > 0) &&
1.2460 + NULL != dst->asTexture() &&
1.2461 + dst->origin() == src->origin() &&
1.2462 + kIndex_8_GrPixelConfig != src->config()) {
1.2463 + if (NULL != wouldNeedTempFBO) {
1.2464 + *wouldNeedTempFBO = NULL == src->asRenderTarget();
1.2465 + }
1.2466 + return true;
1.2467 + } else {
1.2468 + return false;
1.2469 + }
1.2470 +}
1.2471 +
1.2472 +// If a temporary FBO was created, its non-zero ID is returned. The viewport that the copy rect is
1.2473 +// relative to is output.
1.2474 +inline GrGLuint bind_surface_as_fbo(const GrGLInterface* gl,
1.2475 + GrSurface* surface,
1.2476 + GrGLenum fboTarget,
1.2477 + GrGLIRect* viewport) {
1.2478 + GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(surface->asRenderTarget());
1.2479 + GrGLuint tempFBOID;
1.2480 + if (NULL == rt) {
1.2481 + SkASSERT(NULL != surface->asTexture());
1.2482 + GrGLuint texID = static_cast<GrGLTexture*>(surface->asTexture())->textureID();
1.2483 + GR_GL_CALL(gl, GenFramebuffers(1, &tempFBOID));
1.2484 + GR_GL_CALL(gl, BindFramebuffer(fboTarget, tempFBOID));
1.2485 + GR_GL_CALL(gl, FramebufferTexture2D(fboTarget,
1.2486 + GR_GL_COLOR_ATTACHMENT0,
1.2487 + GR_GL_TEXTURE_2D,
1.2488 + texID,
1.2489 + 0));
1.2490 + viewport->fLeft = 0;
1.2491 + viewport->fBottom = 0;
1.2492 + viewport->fWidth = surface->width();
1.2493 + viewport->fHeight = surface->height();
1.2494 + } else {
1.2495 + tempFBOID = 0;
1.2496 + GR_GL_CALL(gl, BindFramebuffer(fboTarget, rt->renderFBOID()));
1.2497 + *viewport = rt->getViewport();
1.2498 + }
1.2499 + return tempFBOID;
1.2500 +}
1.2501 +
1.2502 +}
1.2503 +
1.2504 +void GrGpuGL::initCopySurfaceDstDesc(const GrSurface* src, GrTextureDesc* desc) {
1.2505 + // Check for format issues with glCopyTexSubImage2D
1.2506 + if (kGLES_GrGLStandard == this->glStandard() && this->glCaps().bgraIsInternalFormat() &&
1.2507 + kBGRA_8888_GrPixelConfig == src->config()) {
1.2508 + // glCopyTexSubImage2D doesn't work with this config. We'll want to make it a render target
1.2509 + // in order to call glBlitFramebuffer or to copy to it by rendering.
1.2510 + INHERITED::initCopySurfaceDstDesc(src, desc);
1.2511 + return;
1.2512 + } else if (NULL == src->asRenderTarget()) {
1.2513 + // We don't want to have to create an FBO just to use glCopyTexSubImage2D. Let the base
1.2514 + // class handle it by rendering.
1.2515 + INHERITED::initCopySurfaceDstDesc(src, desc);
1.2516 + return;
1.2517 + }
1.2518 +
1.2519 + const GrGLRenderTarget* srcRT = static_cast<const GrGLRenderTarget*>(src->asRenderTarget());
1.2520 + if (NULL != srcRT && srcRT->renderFBOID() != srcRT->textureFBOID()) {
1.2521 + // It's illegal to call CopyTexSubImage2D on a MSAA renderbuffer.
1.2522 + INHERITED::initCopySurfaceDstDesc(src, desc);
1.2523 + } else {
1.2524 + desc->fConfig = src->config();
1.2525 + desc->fOrigin = src->origin();
1.2526 + desc->fFlags = kNone_GrTextureFlags;
1.2527 + }
1.2528 +}
1.2529 +
1.2530 +bool GrGpuGL::onCopySurface(GrSurface* dst,
1.2531 + GrSurface* src,
1.2532 + const SkIRect& srcRect,
1.2533 + const SkIPoint& dstPoint) {
1.2534 + bool inheritedCouldCopy = INHERITED::onCanCopySurface(dst, src, srcRect, dstPoint);
1.2535 + bool copied = false;
1.2536 + bool wouldNeedTempFBO = false;
1.2537 + if (can_copy_texsubimage(dst, src, this, &wouldNeedTempFBO) &&
1.2538 + (!wouldNeedTempFBO || !inheritedCouldCopy)) {
1.2539 + GrGLuint srcFBO;
1.2540 + GrGLIRect srcVP;
1.2541 + srcFBO = bind_surface_as_fbo(this->glInterface(), src, GR_GL_FRAMEBUFFER, &srcVP);
1.2542 + GrGLTexture* dstTex = static_cast<GrGLTexture*>(dst->asTexture());
1.2543 + SkASSERT(NULL != dstTex);
1.2544 + // We modified the bound FBO
1.2545 + fHWBoundRenderTarget = NULL;
1.2546 + GrGLIRect srcGLRect;
1.2547 + srcGLRect.setRelativeTo(srcVP,
1.2548 + srcRect.fLeft,
1.2549 + srcRect.fTop,
1.2550 + srcRect.width(),
1.2551 + srcRect.height(),
1.2552 + src->origin());
1.2553 +
1.2554 + this->setScratchTextureUnit();
1.2555 + GL_CALL(BindTexture(GR_GL_TEXTURE_2D, dstTex->textureID()));
1.2556 + GrGLint dstY;
1.2557 + if (kBottomLeft_GrSurfaceOrigin == dst->origin()) {
1.2558 + dstY = dst->height() - (dstPoint.fY + srcGLRect.fHeight);
1.2559 + } else {
1.2560 + dstY = dstPoint.fY;
1.2561 + }
1.2562 + GL_CALL(CopyTexSubImage2D(GR_GL_TEXTURE_2D, 0,
1.2563 + dstPoint.fX, dstY,
1.2564 + srcGLRect.fLeft, srcGLRect.fBottom,
1.2565 + srcGLRect.fWidth, srcGLRect.fHeight));
1.2566 + copied = true;
1.2567 + if (srcFBO) {
1.2568 + GL_CALL(DeleteFramebuffers(1, &srcFBO));
1.2569 + }
1.2570 + } else if (can_blit_framebuffer(dst, src, this, &wouldNeedTempFBO) &&
1.2571 + (!wouldNeedTempFBO || !inheritedCouldCopy)) {
1.2572 + SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY,
1.2573 + srcRect.width(), srcRect.height());
1.2574 + bool selfOverlap = false;
1.2575 + if (dst->isSameAs(src)) {
1.2576 + selfOverlap = SkIRect::IntersectsNoEmptyCheck(dstRect, srcRect);
1.2577 + }
1.2578 +
1.2579 + if (!selfOverlap) {
1.2580 + GrGLuint dstFBO;
1.2581 + GrGLuint srcFBO;
1.2582 + GrGLIRect dstVP;
1.2583 + GrGLIRect srcVP;
1.2584 + dstFBO = bind_surface_as_fbo(this->glInterface(), dst, GR_GL_DRAW_FRAMEBUFFER, &dstVP);
1.2585 + srcFBO = bind_surface_as_fbo(this->glInterface(), src, GR_GL_READ_FRAMEBUFFER, &srcVP);
1.2586 + // We modified the bound FBO
1.2587 + fHWBoundRenderTarget = NULL;
1.2588 + GrGLIRect srcGLRect;
1.2589 + GrGLIRect dstGLRect;
1.2590 + srcGLRect.setRelativeTo(srcVP,
1.2591 + srcRect.fLeft,
1.2592 + srcRect.fTop,
1.2593 + srcRect.width(),
1.2594 + srcRect.height(),
1.2595 + src->origin());
1.2596 + dstGLRect.setRelativeTo(dstVP,
1.2597 + dstRect.fLeft,
1.2598 + dstRect.fTop,
1.2599 + dstRect.width(),
1.2600 + dstRect.height(),
1.2601 + dst->origin());
1.2602 +
1.2603 + GrAutoTRestore<ScissorState> asr;
1.2604 + if (GrGLCaps::kDesktop_EXT_MSFBOType == this->glCaps().msFBOType()) {
1.2605 + // The EXT version applies the scissor during the blit, so disable it.
1.2606 + asr.reset(&fScissorState);
1.2607 + fScissorState.fEnabled = false;
1.2608 + this->flushScissor();
1.2609 + }
1.2610 + GrGLint srcY0;
1.2611 + GrGLint srcY1;
1.2612 + // Does the blit need to y-mirror or not?
1.2613 + if (src->origin() == dst->origin()) {
1.2614 + srcY0 = srcGLRect.fBottom;
1.2615 + srcY1 = srcGLRect.fBottom + srcGLRect.fHeight;
1.2616 + } else {
1.2617 + srcY0 = srcGLRect.fBottom + srcGLRect.fHeight;
1.2618 + srcY1 = srcGLRect.fBottom;
1.2619 + }
1.2620 + GL_CALL(BlitFramebuffer(srcGLRect.fLeft,
1.2621 + srcY0,
1.2622 + srcGLRect.fLeft + srcGLRect.fWidth,
1.2623 + srcY1,
1.2624 + dstGLRect.fLeft,
1.2625 + dstGLRect.fBottom,
1.2626 + dstGLRect.fLeft + dstGLRect.fWidth,
1.2627 + dstGLRect.fBottom + dstGLRect.fHeight,
1.2628 + GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST));
1.2629 + if (dstFBO) {
1.2630 + GL_CALL(DeleteFramebuffers(1, &dstFBO));
1.2631 + }
1.2632 + if (srcFBO) {
1.2633 + GL_CALL(DeleteFramebuffers(1, &srcFBO));
1.2634 + }
1.2635 + copied = true;
1.2636 + }
1.2637 + }
1.2638 + if (!copied && inheritedCouldCopy) {
1.2639 + copied = INHERITED::onCopySurface(dst, src, srcRect, dstPoint);
1.2640 + SkASSERT(copied);
1.2641 + }
1.2642 + return copied;
1.2643 +}
1.2644 +
1.2645 +bool GrGpuGL::onCanCopySurface(GrSurface* dst,
1.2646 + GrSurface* src,
1.2647 + const SkIRect& srcRect,
1.2648 + const SkIPoint& dstPoint) {
1.2649 + // This mirrors the logic in onCopySurface.
1.2650 + if (can_copy_texsubimage(dst, src, this)) {
1.2651 + return true;
1.2652 + }
1.2653 + if (can_blit_framebuffer(dst, src, this)) {
1.2654 + if (dst->isSameAs(src)) {
1.2655 + SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY,
1.2656 + srcRect.width(), srcRect.height());
1.2657 + if(!SkIRect::IntersectsNoEmptyCheck(dstRect, srcRect)) {
1.2658 + return true;
1.2659 + }
1.2660 + } else {
1.2661 + return true;
1.2662 + }
1.2663 + }
1.2664 + return INHERITED::onCanCopySurface(dst, src, srcRect, dstPoint);
1.2665 +}
1.2666 +
1.2667 +void GrGpuGL::onInstantGpuTraceEvent(const char* marker) {
1.2668 + if (this->caps()->gpuTracingSupport()) {
1.2669 + // GL_CALL(InsertEventMarker(0, marker));
1.2670 + }
1.2671 +}
1.2672 +
1.2673 +void GrGpuGL::onPushGpuTraceEvent(const char* marker) {
1.2674 + if (this->caps()->gpuTracingSupport()) {
1.2675 + // GL_CALL(PushGroupMarker(0, marker));
1.2676 + }
1.2677 +}
1.2678 +
1.2679 +void GrGpuGL::onPopGpuTraceEvent() {
1.2680 + if (this->caps()->gpuTracingSupport()) {
1.2681 + // GL_CALL(PopGroupMarker());
1.2682 + }
1.2683 +}
1.2684 +
1.2685 +///////////////////////////////////////////////////////////////////////////////
1.2686 +
1.2687 +GrGLAttribArrayState* GrGpuGL::HWGeometryState::bindArrayAndBuffersToDraw(
1.2688 + GrGpuGL* gpu,
1.2689 + const GrGLVertexBuffer* vbuffer,
1.2690 + const GrGLIndexBuffer* ibuffer) {
1.2691 + SkASSERT(NULL != vbuffer);
1.2692 + GrGLAttribArrayState* attribState;
1.2693 +
1.2694 + // We use a vertex array if we're on a core profile and the verts are in a VBO.
1.2695 + if (gpu->glCaps().isCoreProfile() && !vbuffer->isCPUBacked()) {
1.2696 + if (NULL == fVBOVertexArray || !fVBOVertexArray->isValid()) {
1.2697 + SkSafeUnref(fVBOVertexArray);
1.2698 + GrGLuint arrayID;
1.2699 + GR_GL_CALL(gpu->glInterface(), GenVertexArrays(1, &arrayID));
1.2700 + int attrCount = gpu->glCaps().maxVertexAttributes();
1.2701 + fVBOVertexArray = SkNEW_ARGS(GrGLVertexArray, (gpu, arrayID, attrCount));
1.2702 + }
1.2703 + attribState = fVBOVertexArray->bindWithIndexBuffer(ibuffer);
1.2704 + } else {
1.2705 + if (NULL != ibuffer) {
1.2706 + this->setIndexBufferIDOnDefaultVertexArray(gpu, ibuffer->bufferID());
1.2707 + } else {
1.2708 + this->setVertexArrayID(gpu, 0);
1.2709 + }
1.2710 + int attrCount = gpu->glCaps().maxVertexAttributes();
1.2711 + if (fDefaultVertexArrayAttribState.count() != attrCount) {
1.2712 + fDefaultVertexArrayAttribState.resize(attrCount);
1.2713 + }
1.2714 + attribState = &fDefaultVertexArrayAttribState;
1.2715 + }
1.2716 + return attribState;
1.2717 +}
