1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/gl/GrGLUtil.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,302 @@
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 "GrGLUtil.h"
1.13 +#include "SkMatrix.h"
1.14 +#include <stdio.h>
1.15 +
1.16 +void GrGLClearErr(const GrGLInterface* gl) {
1.17 + while (GR_GL_NO_ERROR != gl->fFunctions.fGetError()) {}
1.18 +}
1.19 +
1.20 +namespace {
1.21 +const char *get_error_string(uint32_t err) {
1.22 + switch (err) {
1.23 + case GR_GL_NO_ERROR:
1.24 + return "";
1.25 + case GR_GL_INVALID_ENUM:
1.26 + return "Invalid Enum";
1.27 + case GR_GL_INVALID_VALUE:
1.28 + return "Invalid Value";
1.29 + case GR_GL_INVALID_OPERATION:
1.30 + return "Invalid Operation";
1.31 + case GR_GL_OUT_OF_MEMORY:
1.32 + return "Out of Memory";
1.33 + case GR_GL_CONTEXT_LOST:
1.34 + return "Context Lost";
1.35 + }
1.36 + return "Unknown";
1.37 +}
1.38 +}
1.39 +
1.40 +void GrGLCheckErr(const GrGLInterface* gl,
1.41 + const char* location,
1.42 + const char* call) {
1.43 + uint32_t err = GR_GL_GET_ERROR(gl);
1.44 + if (GR_GL_NO_ERROR != err) {
1.45 + GrPrintf("---- glGetError 0x%x(%s)", err, get_error_string(err));
1.46 + if (NULL != location) {
1.47 + GrPrintf(" at\n\t%s", location);
1.48 + }
1.49 + if (NULL != call) {
1.50 + GrPrintf("\n\t\t%s", call);
1.51 + }
1.52 + GrPrintf("\n");
1.53 + }
1.54 +}
1.55 +
1.56 +namespace {
1.57 +// Mesa uses a non-standard version string of format: 1.4 Mesa <mesa_major>.<mesa_minor>.
1.58 +// The mapping of from mesa version to GL version came from here: http://www.mesa3d.org/intro.html
1.59 +bool get_gl_version_for_mesa(int mesaMajorVersion, int* major, int* minor) {
1.60 + switch (mesaMajorVersion) {
1.61 + case 2:
1.62 + case 3:
1.63 + case 4:
1.64 + case 5:
1.65 + case 6:
1.66 + *major = 1;
1.67 + *minor = mesaMajorVersion - 1;
1.68 + return true;
1.69 + case 7:
1.70 + *major = 2;
1.71 + *minor = 1;
1.72 + return true;
1.73 + case 8:
1.74 + *major = 3;
1.75 + *minor = 0;
1.76 + return true;
1.77 + case 9:
1.78 + *major = 3;
1.79 + *minor = 1;
1.80 + return true;
1.81 + case 10:
1.82 + *major = 3;
1.83 + *minor = 3;
1.84 + return true;
1.85 + default:
1.86 + return false;
1.87 + }
1.88 +}
1.89 +}
1.90 +
1.91 +///////////////////////////////////////////////////////////////////////////////
1.92 +
1.93 +#if GR_GL_LOG_CALLS
1.94 + bool gLogCallsGL = !!(GR_GL_LOG_CALLS_START);
1.95 +#endif
1.96 +
1.97 +#if GR_GL_CHECK_ERROR
1.98 + bool gCheckErrorGL = !!(GR_GL_CHECK_ERROR_START);
1.99 +#endif
1.100 +
1.101 +///////////////////////////////////////////////////////////////////////////////
1.102 +
1.103 +GrGLStandard GrGLGetStandardInUseFromString(const char* versionString) {
1.104 + if (NULL == versionString) {
1.105 + SkDEBUGFAIL("NULL GL version string.");
1.106 + return kNone_GrGLStandard;
1.107 + }
1.108 +
1.109 + int major, minor;
1.110 +
1.111 + // check for desktop
1.112 + int n = sscanf(versionString, "%d.%d", &major, &minor);
1.113 + if (2 == n) {
1.114 + return kGL_GrGLStandard;
1.115 + }
1.116 +
1.117 + // check for ES 1
1.118 + char profile[2];
1.119 + n = sscanf(versionString, "OpenGL ES-%c%c %d.%d", profile, profile+1, &major, &minor);
1.120 + if (4 == n) {
1.121 + // we no longer support ES1.
1.122 + return kNone_GrGLStandard;
1.123 + }
1.124 +
1.125 + // check for ES2
1.126 + n = sscanf(versionString, "OpenGL ES %d.%d", &major, &minor);
1.127 + if (2 == n) {
1.128 + return kGLES_GrGLStandard;
1.129 + }
1.130 + return kNone_GrGLStandard;
1.131 +}
1.132 +
1.133 +bool GrGLIsMesaFromVersionString(const char* versionString) {
1.134 + int major, minor, mesaMajor, mesaMinor;
1.135 + int n = sscanf(versionString, "%d.%d Mesa %d.%d", &major, &minor, &mesaMajor, &mesaMinor);
1.136 + return 4 == n;
1.137 +}
1.138 +
1.139 +bool GrGLIsChromiumFromRendererString(const char* rendererString) {
1.140 + return 0 == strcmp(rendererString, "Chromium");
1.141 +}
1.142 +
1.143 +GrGLVersion GrGLGetVersionFromString(const char* versionString) {
1.144 + if (NULL == versionString) {
1.145 + SkDEBUGFAIL("NULL GL version string.");
1.146 + return 0;
1.147 + }
1.148 +
1.149 + int major, minor;
1.150 +
1.151 + // check for mesa
1.152 + int mesaMajor, mesaMinor;
1.153 + int n = sscanf(versionString, "%d.%d Mesa %d.%d", &major, &minor, &mesaMajor, &mesaMinor);
1.154 + if (4 == n) {
1.155 + if (get_gl_version_for_mesa(mesaMajor, &major, &minor)) {
1.156 + return GR_GL_VER(major, minor);
1.157 + } else {
1.158 + return 0;
1.159 + }
1.160 + }
1.161 +
1.162 + n = sscanf(versionString, "%d.%d", &major, &minor);
1.163 + if (2 == n) {
1.164 + return GR_GL_VER(major, minor);
1.165 + }
1.166 +
1.167 + char profile[2];
1.168 + n = sscanf(versionString, "OpenGL ES-%c%c %d.%d", profile, profile+1,
1.169 + &major, &minor);
1.170 + if (4 == n) {
1.171 + return GR_GL_VER(major, minor);
1.172 + }
1.173 +
1.174 + n = sscanf(versionString, "OpenGL ES %d.%d", &major, &minor);
1.175 + if (2 == n) {
1.176 + return GR_GL_VER(major, minor);
1.177 + }
1.178 +
1.179 + return 0;
1.180 +}
1.181 +
1.182 +GrGLSLVersion GrGLGetGLSLVersionFromString(const char* versionString) {
1.183 + if (NULL == versionString) {
1.184 + SkDEBUGFAIL("NULL GLSL version string.");
1.185 + return 0;
1.186 + }
1.187 +
1.188 + int major, minor;
1.189 +
1.190 + int n = sscanf(versionString, "%d.%d", &major, &minor);
1.191 + if (2 == n) {
1.192 + return GR_GLSL_VER(major, minor);
1.193 + }
1.194 +
1.195 + n = sscanf(versionString, "OpenGL ES GLSL ES %d.%d", &major, &minor);
1.196 + if (2 == n) {
1.197 + return GR_GLSL_VER(major, minor);
1.198 + }
1.199 +
1.200 +#ifdef SK_BUILD_FOR_ANDROID
1.201 + // android hack until the gpu vender updates their drivers
1.202 + n = sscanf(versionString, "OpenGL ES GLSL %d.%d", &major, &minor);
1.203 + if (2 == n) {
1.204 + return GR_GLSL_VER(major, minor);
1.205 + }
1.206 +#endif
1.207 +
1.208 + return 0;
1.209 +}
1.210 +
1.211 +GrGLVendor GrGLGetVendorFromString(const char* vendorString) {
1.212 + if (NULL != vendorString) {
1.213 + if (0 == strcmp(vendorString, "ARM")) {
1.214 + return kARM_GrGLVendor;
1.215 + }
1.216 + if (0 == strcmp(vendorString, "Imagination Technologies")) {
1.217 + return kImagination_GrGLVendor;
1.218 + }
1.219 + if (0 == strncmp(vendorString, "Intel ", 6) || 0 == strcmp(vendorString, "Intel")) {
1.220 + return kIntel_GrGLVendor;
1.221 + }
1.222 + if (0 == strcmp(vendorString, "Qualcomm")) {
1.223 + return kQualcomm_GrGLVendor;
1.224 + }
1.225 + }
1.226 + return kOther_GrGLVendor;
1.227 +}
1.228 +
1.229 +GrGLRenderer GrGLGetRendererFromString(const char* rendererString) {
1.230 + if (NULL != rendererString) {
1.231 + if (0 == strcmp(rendererString, "NVIDIA Tegra 3")) {
1.232 + return kTegra3_GrGLRenderer;
1.233 + } else if (0 == strcmp(rendererString, "NVIDIA Tegra")) {
1.234 + return kTegra2_GrGLRenderer;
1.235 + }
1.236 + }
1.237 + return kOther_GrGLRenderer;
1.238 +}
1.239 +
1.240 +GrGLVersion GrGLGetVersion(const GrGLInterface* gl) {
1.241 + const GrGLubyte* v;
1.242 + GR_GL_CALL_RET(gl, v, GetString(GR_GL_VERSION));
1.243 + return GrGLGetVersionFromString((const char*) v);
1.244 +}
1.245 +
1.246 +GrGLSLVersion GrGLGetGLSLVersion(const GrGLInterface* gl) {
1.247 + const GrGLubyte* v;
1.248 + GR_GL_CALL_RET(gl, v, GetString(GR_GL_SHADING_LANGUAGE_VERSION));
1.249 + return GrGLGetGLSLVersionFromString((const char*) v);
1.250 +}
1.251 +
1.252 +GrGLVendor GrGLGetVendor(const GrGLInterface* gl) {
1.253 + const GrGLubyte* v;
1.254 + GR_GL_CALL_RET(gl, v, GetString(GR_GL_VENDOR));
1.255 + return GrGLGetVendorFromString((const char*) v);
1.256 +}
1.257 +
1.258 +GrGLRenderer GrGLGetRenderer(const GrGLInterface* gl) {
1.259 + const GrGLubyte* v;
1.260 + GR_GL_CALL_RET(gl, v, GetString(GR_GL_RENDERER));
1.261 + return GrGLGetRendererFromString((const char*) v);
1.262 +}
1.263 +
1.264 +template<> void GrGLGetMatrix<3>(GrGLfloat* dest, const SkMatrix& src) {
1.265 + // Col 0
1.266 + dest[0] = SkScalarToFloat(src[SkMatrix::kMScaleX]);
1.267 + dest[1] = SkScalarToFloat(src[SkMatrix::kMSkewY]);
1.268 + dest[2] = SkScalarToFloat(src[SkMatrix::kMPersp0]);
1.269 +
1.270 + // Col 1
1.271 + dest[3] = SkScalarToFloat(src[SkMatrix::kMSkewX]);
1.272 + dest[4] = SkScalarToFloat(src[SkMatrix::kMScaleY]);
1.273 + dest[5] = SkScalarToFloat(src[SkMatrix::kMPersp1]);
1.274 +
1.275 + // Col 2
1.276 + dest[6] = SkScalarToFloat(src[SkMatrix::kMTransX]);
1.277 + dest[7] = SkScalarToFloat(src[SkMatrix::kMTransY]);
1.278 + dest[8] = SkScalarToFloat(src[SkMatrix::kMPersp2]);
1.279 +}
1.280 +
1.281 +template<> void GrGLGetMatrix<4>(GrGLfloat* dest, const SkMatrix& src) {
1.282 + // Col 0
1.283 + dest[0] = SkScalarToFloat(src[SkMatrix::kMScaleX]);
1.284 + dest[1] = SkScalarToFloat(src[SkMatrix::kMSkewY]);
1.285 + dest[2] = 0;
1.286 + dest[3] = SkScalarToFloat(src[SkMatrix::kMPersp0]);
1.287 +
1.288 + // Col 1
1.289 + dest[4] = SkScalarToFloat(src[SkMatrix::kMSkewX]);
1.290 + dest[5] = SkScalarToFloat(src[SkMatrix::kMScaleY]);
1.291 + dest[6] = 0;
1.292 + dest[7] = SkScalarToFloat(src[SkMatrix::kMPersp1]);
1.293 +
1.294 + // Col 2
1.295 + dest[8] = 0;
1.296 + dest[9] = 0;
1.297 + dest[10] = 1;
1.298 + dest[11] = 0;
1.299 +
1.300 + // Col 3
1.301 + dest[12] = SkScalarToFloat(src[SkMatrix::kMTransX]);
1.302 + dest[13] = SkScalarToFloat(src[SkMatrix::kMTransY]);
1.303 + dest[14] = 0;
1.304 + dest[15] = SkScalarToFloat(src[SkMatrix::kMPersp2]);
1.305 +}
