1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/gl/GrGLCreateNullInterface.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,402 @@
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 "gl/GrGLInterface.h"
1.13 +#include "GrGLDefines.h"
1.14 +#include "SkTDArray.h"
1.15 +#include "GrGLNoOpInterface.h"
1.16 +
1.17 +// Functions not declared in GrGLBogusInterface.h (not common with the Debug GL interface).
1.18 +
1.19 +namespace { // added to suppress 'no previous prototype' warning
1.20 +
1.21 +class GrBufferObj {
1.22 +public:
1.23 + GrBufferObj(GrGLuint id) : fID(id), fDataPtr(NULL), fSize(0), fMapped(false) {
1.24 + }
1.25 + ~GrBufferObj() { SkDELETE_ARRAY(fDataPtr); }
1.26 +
1.27 + void allocate(GrGLsizeiptr size, const GrGLchar* dataPtr) {
1.28 + if (NULL != fDataPtr) {
1.29 + SkASSERT(0 != fSize);
1.30 + SkDELETE_ARRAY(fDataPtr);
1.31 + }
1.32 +
1.33 + fSize = size;
1.34 + fDataPtr = SkNEW_ARRAY(char, size);
1.35 + }
1.36 +
1.37 + GrGLuint id() const { return fID; }
1.38 + GrGLchar* dataPtr() { return fDataPtr; }
1.39 + GrGLsizeiptr size() const { return fSize; }
1.40 +
1.41 + void setMapped(bool mapped) { fMapped = mapped; }
1.42 + bool mapped() const { return fMapped; }
1.43 +
1.44 +private:
1.45 + GrGLuint fID;
1.46 + GrGLchar* fDataPtr;
1.47 + GrGLsizeiptr fSize; // size in bytes
1.48 + bool fMapped;
1.49 +};
1.50 +
1.51 +// In debug builds we do asserts that ensure we agree with GL about when a buffer
1.52 +// is mapped.
1.53 +static SkTDArray<GrBufferObj*> gBuffers; // slot 0 is reserved for head of free list
1.54 +static GrGLuint gCurrArrayBuffer;
1.55 +static GrGLuint gCurrElementArrayBuffer;
1.56 +
1.57 +static GrBufferObj* look_up(GrGLuint id) {
1.58 + GrBufferObj* buffer = gBuffers[id];
1.59 + SkASSERT(NULL != buffer && buffer->id() == id);
1.60 + return buffer;
1.61 +}
1.62 +
1.63 +static GrBufferObj* create_buffer() {
1.64 + if (0 == gBuffers.count()) {
1.65 + // slot zero is reserved for the head of the free list
1.66 + *gBuffers.append() = NULL;
1.67 + }
1.68 +
1.69 + GrGLuint id;
1.70 + GrBufferObj* buffer;
1.71 +
1.72 + if (NULL == gBuffers[0]) {
1.73 + // no free slots - create a new one
1.74 + id = gBuffers.count();
1.75 + buffer = SkNEW_ARGS(GrBufferObj, (id));
1.76 + gBuffers.append(1, &buffer);
1.77 + } else {
1.78 + // recycle a slot from the free list
1.79 + id = SkTCast<GrGLuint>(gBuffers[0]);
1.80 + gBuffers[0] = gBuffers[id];
1.81 +
1.82 + buffer = SkNEW_ARGS(GrBufferObj, (id));
1.83 + gBuffers[id] = buffer;
1.84 + }
1.85 +
1.86 + return buffer;
1.87 +}
1.88 +
1.89 +static void delete_buffer(GrBufferObj* buffer) {
1.90 + SkASSERT(gBuffers.count() > 0);
1.91 +
1.92 + GrGLuint id = buffer->id();
1.93 + SkDELETE(buffer);
1.94 +
1.95 + // Add this slot to the free list
1.96 + gBuffers[id] = gBuffers[0];
1.97 + gBuffers[0] = SkTCast<GrBufferObj*>((const void*)(intptr_t)id);
1.98 +}
1.99 +
1.100 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLActiveTexture(GrGLenum texture) {}
1.101 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLAttachShader(GrGLuint program, GrGLuint shader) {}
1.102 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLBeginQuery(GrGLenum target, GrGLuint id) {}
1.103 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindAttribLocation(GrGLuint program, GrGLuint index, const char* name) {}
1.104 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindTexture(GrGLenum target, GrGLuint texture) {}
1.105 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindVertexArray(GrGLuint id) {}
1.106 +
1.107 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLGenBuffers(GrGLsizei n, GrGLuint* ids) {
1.108 +
1.109 + for (int i = 0; i < n; ++i) {
1.110 + GrBufferObj* buffer = create_buffer();
1.111 + ids[i] = buffer->id();
1.112 + }
1.113 +}
1.114 +
1.115 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLGenerateMipmap(GrGLenum target) {}
1.116 +
1.117 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLBufferData(GrGLenum target,
1.118 + GrGLsizeiptr size,
1.119 + const GrGLvoid* data,
1.120 + GrGLenum usage) {
1.121 + GrGLuint id = 0;
1.122 +
1.123 + switch (target) {
1.124 + case GR_GL_ARRAY_BUFFER:
1.125 + id = gCurrArrayBuffer;
1.126 + break;
1.127 + case GR_GL_ELEMENT_ARRAY_BUFFER:
1.128 + id = gCurrElementArrayBuffer;
1.129 + break;
1.130 + default:
1.131 + GrCrash("Unexpected target to nullGLBufferData");
1.132 + break;
1.133 + }
1.134 +
1.135 + if (id > 0) {
1.136 + GrBufferObj* buffer = look_up(id);
1.137 + buffer->allocate(size, (const GrGLchar*) data);
1.138 + }
1.139 +}
1.140 +
1.141 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLPixelStorei(GrGLenum pname, GrGLint param) {}
1.142 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLReadPixels(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLvoid* pixels) {}
1.143 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLUseProgram(GrGLuint program) {}
1.144 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLViewport(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height) {}
1.145 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindFramebuffer(GrGLenum target, GrGLuint framebuffer) {}
1.146 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindRenderbuffer(GrGLenum target, GrGLuint renderbuffer) {}
1.147 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteFramebuffers(GrGLsizei n, const GrGLuint *framebuffers) {}
1.148 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteRenderbuffers(GrGLsizei n, const GrGLuint *renderbuffers) {}
1.149 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLFramebufferRenderbuffer(GrGLenum target, GrGLenum attachment, GrGLenum renderbuffertarget, GrGLuint renderbuffer) {}
1.150 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLFramebufferTexture2D(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level) {}
1.151 +
1.152 +GrGLuint GR_GL_FUNCTION_TYPE nullGLCreateProgram() {
1.153 + static GrGLuint gCurrID = 0;
1.154 + return ++gCurrID;
1.155 +}
1.156 +
1.157 +GrGLuint GR_GL_FUNCTION_TYPE nullGLCreateShader(GrGLenum type) {
1.158 + static GrGLuint gCurrID = 0;
1.159 + return ++gCurrID;
1.160 +}
1.161 +
1.162 +// same delete used for shaders and programs
1.163 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLDelete(GrGLuint program) {
1.164 +}
1.165 +
1.166 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindBuffer(GrGLenum target, GrGLuint buffer) {
1.167 + switch (target) {
1.168 + case GR_GL_ARRAY_BUFFER:
1.169 + gCurrArrayBuffer = buffer;
1.170 + break;
1.171 + case GR_GL_ELEMENT_ARRAY_BUFFER:
1.172 + gCurrElementArrayBuffer = buffer;
1.173 + break;
1.174 + }
1.175 +}
1.176 +
1.177 +// deleting a bound buffer has the side effect of binding 0
1.178 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteBuffers(GrGLsizei n, const GrGLuint* ids) {
1.179 + for (int i = 0; i < n; ++i) {
1.180 + if (ids[i] == gCurrArrayBuffer) {
1.181 + gCurrArrayBuffer = 0;
1.182 + }
1.183 + if (ids[i] == gCurrElementArrayBuffer) {
1.184 + gCurrElementArrayBuffer = 0;
1.185 + }
1.186 +
1.187 + GrBufferObj* buffer = look_up(ids[i]);
1.188 + delete_buffer(buffer);
1.189 + }
1.190 +}
1.191 +
1.192 +GrGLvoid* GR_GL_FUNCTION_TYPE nullGLMapBuffer(GrGLenum target, GrGLenum access) {
1.193 +
1.194 + GrGLuint id = 0;
1.195 + switch (target) {
1.196 + case GR_GL_ARRAY_BUFFER:
1.197 + id = gCurrArrayBuffer;
1.198 + break;
1.199 + case GR_GL_ELEMENT_ARRAY_BUFFER:
1.200 + id = gCurrElementArrayBuffer;
1.201 + break;
1.202 + }
1.203 +
1.204 + if (id > 0) {
1.205 + GrBufferObj* buffer = look_up(id);
1.206 + SkASSERT(!buffer->mapped());
1.207 + buffer->setMapped(true);
1.208 + return buffer->dataPtr();
1.209 + }
1.210 +
1.211 + SkASSERT(false);
1.212 + return NULL; // no buffer bound to target
1.213 +}
1.214 +
1.215 +GrGLboolean GR_GL_FUNCTION_TYPE nullGLUnmapBuffer(GrGLenum target) {
1.216 + GrGLuint id = 0;
1.217 + switch (target) {
1.218 + case GR_GL_ARRAY_BUFFER:
1.219 + id = gCurrArrayBuffer;
1.220 + break;
1.221 + case GR_GL_ELEMENT_ARRAY_BUFFER:
1.222 + id = gCurrElementArrayBuffer;
1.223 + break;
1.224 + }
1.225 + if (id > 0) {
1.226 + GrBufferObj* buffer = look_up(id);
1.227 + SkASSERT(buffer->mapped());
1.228 + buffer->setMapped(false);
1.229 + return GR_GL_TRUE;
1.230 + }
1.231 +
1.232 + GrAlwaysAssert(false);
1.233 + return GR_GL_FALSE; // GR_GL_INVALID_OPERATION;
1.234 +}
1.235 +
1.236 +GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetBufferParameteriv(GrGLenum target, GrGLenum pname, GrGLint* params) {
1.237 + switch (pname) {
1.238 + case GR_GL_BUFFER_MAPPED: {
1.239 + *params = GR_GL_FALSE;
1.240 + GrGLuint id = 0;
1.241 + switch (target) {
1.242 + case GR_GL_ARRAY_BUFFER:
1.243 + id = gCurrArrayBuffer;
1.244 + break;
1.245 + case GR_GL_ELEMENT_ARRAY_BUFFER:
1.246 + id = gCurrElementArrayBuffer;
1.247 + break;
1.248 + }
1.249 + if (id > 0) {
1.250 + GrBufferObj* buffer = look_up(id);
1.251 + if (buffer->mapped()) {
1.252 + *params = GR_GL_TRUE;
1.253 + }
1.254 + }
1.255 + break; }
1.256 + default:
1.257 + GrCrash("Unexpected pname to GetBufferParamateriv");
1.258 + break;
1.259 + }
1.260 +};
1.261 +
1.262 +} // end anonymous namespace
1.263 +
1.264 +const GrGLInterface* GrGLCreateNullInterface() {
1.265 + GrGLInterface* interface = SkNEW(GrGLInterface);
1.266 +
1.267 + interface->fStandard = kGL_GrGLStandard;
1.268 +
1.269 + GrGLInterface::Functions* functions = &interface->fFunctions;
1.270 + functions->fActiveTexture = nullGLActiveTexture;
1.271 + functions->fAttachShader = nullGLAttachShader;
1.272 + functions->fBeginQuery = nullGLBeginQuery;
1.273 + functions->fBindAttribLocation = nullGLBindAttribLocation;
1.274 + functions->fBindBuffer = nullGLBindBuffer;
1.275 + functions->fBindFragDataLocation = noOpGLBindFragDataLocation;
1.276 + functions->fBindTexture = nullGLBindTexture;
1.277 + functions->fBindVertexArray = nullGLBindVertexArray;
1.278 + functions->fBlendColor = noOpGLBlendColor;
1.279 + functions->fBlendFunc = noOpGLBlendFunc;
1.280 + functions->fBufferData = nullGLBufferData;
1.281 + functions->fBufferSubData = noOpGLBufferSubData;
1.282 + functions->fClear = noOpGLClear;
1.283 + functions->fClearColor = noOpGLClearColor;
1.284 + functions->fClearStencil = noOpGLClearStencil;
1.285 + functions->fColorMask = noOpGLColorMask;
1.286 + functions->fCompileShader = noOpGLCompileShader;
1.287 + functions->fCompressedTexImage2D = noOpGLCompressedTexImage2D;
1.288 + functions->fCopyTexSubImage2D = noOpGLCopyTexSubImage2D;
1.289 + functions->fCreateProgram = nullGLCreateProgram;
1.290 + functions->fCreateShader = nullGLCreateShader;
1.291 + functions->fCullFace = noOpGLCullFace;
1.292 + functions->fDeleteBuffers = nullGLDeleteBuffers;
1.293 + functions->fDeleteProgram = nullGLDelete;
1.294 + functions->fDeleteQueries = noOpGLDeleteIds;
1.295 + functions->fDeleteShader = nullGLDelete;
1.296 + functions->fDeleteTextures = noOpGLDeleteIds;
1.297 + functions->fDeleteVertexArrays = noOpGLDeleteIds;
1.298 + functions->fDepthMask = noOpGLDepthMask;
1.299 + functions->fDisable = noOpGLDisable;
1.300 + functions->fDisableVertexAttribArray = noOpGLDisableVertexAttribArray;
1.301 + functions->fDrawArrays = noOpGLDrawArrays;
1.302 + functions->fDrawBuffer = noOpGLDrawBuffer;
1.303 + functions->fDrawBuffers = noOpGLDrawBuffers;
1.304 + functions->fDrawElements = noOpGLDrawElements;
1.305 + functions->fEnable = noOpGLEnable;
1.306 + functions->fEnableVertexAttribArray = noOpGLEnableVertexAttribArray;
1.307 + functions->fEndQuery = noOpGLEndQuery;
1.308 + functions->fFinish = noOpGLFinish;
1.309 + functions->fFlush = noOpGLFlush;
1.310 + functions->fFrontFace = noOpGLFrontFace;
1.311 + functions->fGenBuffers = nullGLGenBuffers;
1.312 + functions->fGenerateMipmap = nullGLGenerateMipmap;
1.313 + functions->fGenQueries = noOpGLGenIds;
1.314 + functions->fGenTextures = noOpGLGenIds;
1.315 + functions->fGenVertexArrays = noOpGLGenIds;
1.316 + functions->fGetBufferParameteriv = nullGLGetBufferParameteriv;
1.317 + functions->fGetError = noOpGLGetError;
1.318 + functions->fGetIntegerv = noOpGLGetIntegerv;
1.319 + functions->fGetQueryObjecti64v = noOpGLGetQueryObjecti64v;
1.320 + functions->fGetQueryObjectiv = noOpGLGetQueryObjectiv;
1.321 + functions->fGetQueryObjectui64v = noOpGLGetQueryObjectui64v;
1.322 + functions->fGetQueryObjectuiv = noOpGLGetQueryObjectuiv;
1.323 + functions->fGetQueryiv = noOpGLGetQueryiv;
1.324 + functions->fGetProgramInfoLog = noOpGLGetInfoLog;
1.325 + functions->fGetProgramiv = noOpGLGetShaderOrProgramiv;
1.326 + functions->fGetShaderInfoLog = noOpGLGetInfoLog;
1.327 + functions->fGetShaderiv = noOpGLGetShaderOrProgramiv;
1.328 + functions->fGetString = noOpGLGetString;
1.329 + functions->fGetStringi = noOpGLGetStringi;
1.330 + functions->fGetTexLevelParameteriv = noOpGLGetTexLevelParameteriv;
1.331 + functions->fGetUniformLocation = noOpGLGetUniformLocation;
1.332 + functions->fInsertEventMarker = noOpGLInsertEventMarker;
1.333 + functions->fLoadIdentity = noOpGLLoadIdentity;
1.334 + functions->fLoadMatrixf = noOpGLLoadMatrixf;
1.335 + functions->fLineWidth = noOpGLLineWidth;
1.336 + functions->fLinkProgram = noOpGLLinkProgram;
1.337 + functions->fMatrixMode = noOpGLMatrixMode;
1.338 + functions->fPixelStorei = nullGLPixelStorei;
1.339 + functions->fPopGroupMarker = noOpGLPopGroupMarker;
1.340 + functions->fPushGroupMarker = noOpGLPushGroupMarker;
1.341 + functions->fQueryCounter = noOpGLQueryCounter;
1.342 + functions->fReadBuffer = noOpGLReadBuffer;
1.343 + functions->fReadPixels = nullGLReadPixels;
1.344 + functions->fScissor = noOpGLScissor;
1.345 + functions->fShaderSource = noOpGLShaderSource;
1.346 + functions->fStencilFunc = noOpGLStencilFunc;
1.347 + functions->fStencilFuncSeparate = noOpGLStencilFuncSeparate;
1.348 + functions->fStencilMask = noOpGLStencilMask;
1.349 + functions->fStencilMaskSeparate = noOpGLStencilMaskSeparate;
1.350 + functions->fStencilOp = noOpGLStencilOp;
1.351 + functions->fStencilOpSeparate = noOpGLStencilOpSeparate;
1.352 + functions->fTexGenfv = noOpGLTexGenfv;
1.353 + functions->fTexGeni = noOpGLTexGeni;
1.354 + functions->fTexImage2D = noOpGLTexImage2D;
1.355 + functions->fTexParameteri = noOpGLTexParameteri;
1.356 + functions->fTexParameteriv = noOpGLTexParameteriv;
1.357 + functions->fTexSubImage2D = noOpGLTexSubImage2D;
1.358 + functions->fTexStorage2D = noOpGLTexStorage2D;
1.359 + functions->fDiscardFramebuffer = noOpGLDiscardFramebuffer;
1.360 + functions->fUniform1f = noOpGLUniform1f;
1.361 + functions->fUniform1i = noOpGLUniform1i;
1.362 + functions->fUniform1fv = noOpGLUniform1fv;
1.363 + functions->fUniform1iv = noOpGLUniform1iv;
1.364 + functions->fUniform2f = noOpGLUniform2f;
1.365 + functions->fUniform2i = noOpGLUniform2i;
1.366 + functions->fUniform2fv = noOpGLUniform2fv;
1.367 + functions->fUniform2iv = noOpGLUniform2iv;
1.368 + functions->fUniform3f = noOpGLUniform3f;
1.369 + functions->fUniform3i = noOpGLUniform3i;
1.370 + functions->fUniform3fv = noOpGLUniform3fv;
1.371 + functions->fUniform3iv = noOpGLUniform3iv;
1.372 + functions->fUniform4f = noOpGLUniform4f;
1.373 + functions->fUniform4i = noOpGLUniform4i;
1.374 + functions->fUniform4fv = noOpGLUniform4fv;
1.375 + functions->fUniform4iv = noOpGLUniform4iv;
1.376 + functions->fUniformMatrix2fv = noOpGLUniformMatrix2fv;
1.377 + functions->fUniformMatrix3fv = noOpGLUniformMatrix3fv;
1.378 + functions->fUniformMatrix4fv = noOpGLUniformMatrix4fv;
1.379 + functions->fUseProgram = nullGLUseProgram;
1.380 + functions->fVertexAttrib4fv = noOpGLVertexAttrib4fv;
1.381 + functions->fVertexAttribPointer = noOpGLVertexAttribPointer;
1.382 + functions->fViewport = nullGLViewport;
1.383 + functions->fBindFramebuffer = nullGLBindFramebuffer;
1.384 + functions->fBindRenderbuffer = nullGLBindRenderbuffer;
1.385 + functions->fCheckFramebufferStatus = noOpGLCheckFramebufferStatus;
1.386 + functions->fDeleteFramebuffers = nullGLDeleteFramebuffers;
1.387 + functions->fDeleteRenderbuffers = nullGLDeleteRenderbuffers;
1.388 + functions->fFramebufferRenderbuffer = nullGLFramebufferRenderbuffer;
1.389 + functions->fFramebufferTexture2D = nullGLFramebufferTexture2D;
1.390 + functions->fGenFramebuffers = noOpGLGenIds;
1.391 + functions->fGenRenderbuffers = noOpGLGenIds;
1.392 + functions->fGetFramebufferAttachmentParameteriv = noOpGLGetFramebufferAttachmentParameteriv;
1.393 + functions->fGetRenderbufferParameteriv = noOpGLGetRenderbufferParameteriv;
1.394 + functions->fRenderbufferStorage = noOpGLRenderbufferStorage;
1.395 + functions->fRenderbufferStorageMultisample = noOpGLRenderbufferStorageMultisample;
1.396 + functions->fBlitFramebuffer = noOpGLBlitFramebuffer;
1.397 + functions->fResolveMultisampleFramebuffer = noOpGLResolveMultisampleFramebuffer;
1.398 + functions->fMapBuffer = nullGLMapBuffer;
1.399 + functions->fUnmapBuffer = nullGLUnmapBuffer;
1.400 + functions->fBindFragDataLocationIndexed = noOpGLBindFragDataLocationIndexed;
1.401 +
1.402 + interface->fExtensions.init(kGL_GrGLStandard, functions->fGetString, functions->fGetStringi,
1.403 + functions->fGetIntegerv);
1.404 + return interface;
1.405 +}
