/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrGLUtil.h"
#include "SkMatrix.h"
#include <stdio.h>
void GrGLClearErr(const GrGLInterface* gl) {
while (GR_GL_NO_ERROR != gl->fFunctions.fGetError()) {}
}
namespace {
const char *get_error_string(uint32_t err) {
switch (err) {
case GR_GL_NO_ERROR:
return "";
case GR_GL_INVALID_ENUM:
return "Invalid Enum";
case GR_GL_INVALID_VALUE:
return "Invalid Value";
case GR_GL_INVALID_OPERATION:
return "Invalid Operation";
case GR_GL_OUT_OF_MEMORY:
return "Out of Memory";
case GR_GL_CONTEXT_LOST:
return "Context Lost";
}
return "Unknown";
}
}
void GrGLCheckErr(const GrGLInterface* gl,
const char* location,
const char* call) {
uint32_t err = GR_GL_GET_ERROR(gl);
if (GR_GL_NO_ERROR != err) {
SkDebugf("---- glGetError 0x%x(%s)", err, get_error_string(err));
if (location) {
SkDebugf(" at\n\t%s", location);
}
if (call) {
SkDebugf("\n\t\t%s", call);
}
SkDebugf("\n");
}
}
///////////////////////////////////////////////////////////////////////////////
#if GR_GL_LOG_CALLS
bool gLogCallsGL = !!(GR_GL_LOG_CALLS_START);
#endif
#if GR_GL_CHECK_ERROR
bool gCheckErrorGL = !!(GR_GL_CHECK_ERROR_START);
#endif
///////////////////////////////////////////////////////////////////////////////
GrGLStandard GrGLGetStandardInUseFromString(const char* versionString) {
if (NULL == versionString) {
SkDebugf("NULL GL version string.");
return kNone_GrGLStandard;
}
int major, minor;
// check for desktop
int n = sscanf(versionString, "%d.%d", &major, &minor);
if (2 == n) {
return kGL_GrGLStandard;
}
// check for ES 1
char profile[2];
n = sscanf(versionString, "OpenGL ES-%c%c %d.%d", profile, profile+1, &major, &minor);
if (4 == n) {
// we no longer support ES1.
return kNone_GrGLStandard;
}
// check for ES2
n = sscanf(versionString, "OpenGL ES %d.%d", &major, &minor);
if (2 == n) {
return kGLES_GrGLStandard;
}
return kNone_GrGLStandard;
}
bool GrGLIsMesaFromVersionString(const char* versionString) {
int major, minor, mesaMajor, mesaMinor;
GrGLStandard standard = GrGLGetStandardInUseFromString(versionString);
if (standard == kGL_GrGLStandard) {
int n = sscanf(versionString, "%d.%d Mesa %d.%d", &major, &minor, &mesaMajor, &mesaMinor);
return 4 == n;
}
else {
int n = sscanf(versionString, "OpenGL ES %d.%d Mesa %d.%d", &major, &minor, &mesaMajor, &mesaMinor);
return 4 == n;
}
return false;
}
bool GrGLIsChromiumFromRendererString(const char* rendererString) {
return 0 == strcmp(rendererString, "Chromium");
}
GrGLVersion GrGLGetVersionFromString(const char* versionString) {
if (NULL == versionString) {
SkDebugf("NULL GL version string.");
return GR_GL_INVALID_VER;
}
int major, minor;
// check for mesa
int mesaMajor, mesaMinor;
int n = sscanf(versionString, "%d.%d Mesa %d.%d", &major, &minor, &mesaMajor, &mesaMinor);
if (4 == n) {
return GR_GL_VER(major, minor);
}
n = sscanf(versionString, "%d.%d", &major, &minor);
if (2 == n) {
return GR_GL_VER(major, minor);
}
char profile[2];
n = sscanf(versionString, "OpenGL ES-%c%c %d.%d", profile, profile+1,
&major, &minor);
if (4 == n) {
return GR_GL_VER(major, minor);
}
n = sscanf(versionString, "OpenGL ES %d.%d", &major, &minor);
if (2 == n) {
return GR_GL_VER(major, minor);
}
return GR_GL_INVALID_VER;
}
GrGLSLVersion GrGLGetGLSLVersionFromString(const char* versionString) {
if (NULL == versionString) {
SkDebugf("NULL GLSL version string.");
return GR_GLSL_INVALID_VER;
}
int major, minor;
int n = sscanf(versionString, "%d.%d", &major, &minor);
if (2 == n) {
return GR_GLSL_VER(major, minor);
}
n = sscanf(versionString, "OpenGL ES GLSL ES %d.%d", &major, &minor);
if (2 == n) {
return GR_GLSL_VER(major, minor);
}
#ifdef SK_BUILD_FOR_ANDROID
// android hack until the gpu vender updates their drivers
n = sscanf(versionString, "OpenGL ES GLSL %d.%d", &major, &minor);
if (2 == n) {
return GR_GLSL_VER(major, minor);
}
#endif
return GR_GLSL_INVALID_VER;
}
GrGLVendor GrGLGetVendorFromString(const char* vendorString) {
if (vendorString) {
if (0 == strcmp(vendorString, "ARM")) {
return kARM_GrGLVendor;
}
if (0 == strcmp(vendorString, "Imagination Technologies")) {
return kImagination_GrGLVendor;
}
if (0 == strncmp(vendorString, "Intel ", 6) || 0 == strcmp(vendorString, "Intel")) {
return kIntel_GrGLVendor;
}
if (0 == strcmp(vendorString, "Qualcomm")) {
return kQualcomm_GrGLVendor;
}
if (0 == strcmp(vendorString, "NVIDIA Corporation")) {
return kNVIDIA_GrGLVendor;
}
}
return kOther_GrGLVendor;
}
GrGLRenderer GrGLGetRendererFromString(const char* rendererString) {
if (rendererString) {
if (0 == strcmp(rendererString, "NVIDIA Tegra 3")) {
return kTegra3_GrGLRenderer;
} else if (0 == strcmp(rendererString, "NVIDIA Tegra")) {
return kTegra2_GrGLRenderer;
}
int lastDigit;
int n = sscanf(rendererString, "PowerVR SGX 54%d", &lastDigit);
if (1 == n && lastDigit >= 0 && lastDigit <= 9) {
return kPowerVR54x_GrGLRenderer;
}
static const char kPowerVRRogueStr[] = "PowerVR Rogue";
if (0 == strncmp(rendererString, kPowerVRRogueStr,
SK_ARRAY_COUNT(kPowerVRRogueStr)-1)) {
return kPowerVRRogue_GrGLRenderer;
}
int adrenoNumber;
n = sscanf(rendererString, "Adreno (TM) %d", &adrenoNumber);
if (1 == n) {
if (adrenoNumber >= 300) {
if (adrenoNumber < 400) {
return kAdreno3xx_GrGLRenderer;
}
if (adrenoNumber < 500) {
return kAdreno4xx_GrGLRenderer;
}
}
}
}
return kOther_GrGLRenderer;
}
GrGLVersion GrGLGetVersion(const GrGLInterface* gl) {
const GrGLubyte* v;
GR_GL_CALL_RET(gl, v, GetString(GR_GL_VERSION));
return GrGLGetVersionFromString((const char*) v);
}
GrGLSLVersion GrGLGetGLSLVersion(const GrGLInterface* gl) {
const GrGLubyte* v;
GR_GL_CALL_RET(gl, v, GetString(GR_GL_SHADING_LANGUAGE_VERSION));
return GrGLGetGLSLVersionFromString((const char*) v);
}
GrGLVendor GrGLGetVendor(const GrGLInterface* gl) {
const GrGLubyte* v;
GR_GL_CALL_RET(gl, v, GetString(GR_GL_VENDOR));
return GrGLGetVendorFromString((const char*) v);
}
GrGLRenderer GrGLGetRenderer(const GrGLInterface* gl) {
const GrGLubyte* v;
GR_GL_CALL_RET(gl, v, GetString(GR_GL_RENDERER));
return GrGLGetRendererFromString((const char*) v);
}
template<> void GrGLGetMatrix<3>(GrGLfloat* dest, const SkMatrix& src) {
// Col 0
dest[0] = SkScalarToFloat(src[SkMatrix::kMScaleX]);
dest[1] = SkScalarToFloat(src[SkMatrix::kMSkewY]);
dest[2] = SkScalarToFloat(src[SkMatrix::kMPersp0]);
// Col 1
dest[3] = SkScalarToFloat(src[SkMatrix::kMSkewX]);
dest[4] = SkScalarToFloat(src[SkMatrix::kMScaleY]);
dest[5] = SkScalarToFloat(src[SkMatrix::kMPersp1]);
// Col 2
dest[6] = SkScalarToFloat(src[SkMatrix::kMTransX]);
dest[7] = SkScalarToFloat(src[SkMatrix::kMTransY]);
dest[8] = SkScalarToFloat(src[SkMatrix::kMPersp2]);
}
template<> void GrGLGetMatrix<4>(GrGLfloat* dest, const SkMatrix& src) {
// Col 0
dest[0] = SkScalarToFloat(src[SkMatrix::kMScaleX]);
dest[1] = SkScalarToFloat(src[SkMatrix::kMSkewY]);
dest[2] = 0;
dest[3] = SkScalarToFloat(src[SkMatrix::kMPersp0]);
// Col 1
dest[4] = SkScalarToFloat(src[SkMatrix::kMSkewX]);
dest[5] = SkScalarToFloat(src[SkMatrix::kMScaleY]);
dest[6] = 0;
dest[7] = SkScalarToFloat(src[SkMatrix::kMPersp1]);
// Col 2
dest[8] = 0;
dest[9] = 0;
dest[10] = 1;
dest[11] = 0;
// Col 3
dest[12] = SkScalarToFloat(src[SkMatrix::kMTransX]);
dest[13] = SkScalarToFloat(src[SkMatrix::kMTransY]);
dest[14] = 0;
dest[15] = SkScalarToFloat(src[SkMatrix::kMPersp2]);
}
GrGLenum GrToGLStencilFunc(GrStencilFunc basicFunc) {
static const GrGLenum gTable[] = {
GR_GL_ALWAYS, // kAlways_StencilFunc
GR_GL_NEVER, // kNever_StencilFunc
GR_GL_GREATER, // kGreater_StencilFunc
GR_GL_GEQUAL, // kGEqual_StencilFunc
GR_GL_LESS, // kLess_StencilFunc
GR_GL_LEQUAL, // kLEqual_StencilFunc,
GR_GL_EQUAL, // kEqual_StencilFunc,
GR_GL_NOTEQUAL, // kNotEqual_StencilFunc,
};
GR_STATIC_ASSERT(SK_ARRAY_COUNT(gTable) == kBasicStencilFuncCount);
GR_STATIC_ASSERT(0 == kAlways_StencilFunc);
GR_STATIC_ASSERT(1 == kNever_StencilFunc);
GR_STATIC_ASSERT(2 == kGreater_StencilFunc);
GR_STATIC_ASSERT(3 == kGEqual_StencilFunc);
GR_STATIC_ASSERT(4 == kLess_StencilFunc);
GR_STATIC_ASSERT(5 == kLEqual_StencilFunc);
GR_STATIC_ASSERT(6 == kEqual_StencilFunc);
GR_STATIC_ASSERT(7 == kNotEqual_StencilFunc);
SkASSERT((unsigned) basicFunc < kBasicStencilFuncCount);
return gTable[basicFunc];
}