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/*
* Copyright 2010, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "GLUtils.h"
#if USE(ACCELERATED_COMPOSITING)
#include "ShaderProgram.h"
#include <cutils/log.h>
#include <wtf/CurrentTime.h>
#include <wtf/text/CString.h>
#undef XLOG
#define XLOG(...) android_printLog(ANDROID_LOG_DEBUG, "GLUtils", __VA_ARGS__)
namespace WebCore {
using namespace android;
/////////////////////////////////////////////////////////////////////////////////////////
// Matrix utilities
/////////////////////////////////////////////////////////////////////////////////////////
void GLUtils::toGLMatrix(GLfloat* flattened, const TransformationMatrix& m)
{
flattened[0] = m.m11(); // scaleX
flattened[1] = m.m12(); // skewY
flattened[2] = m.m13();
flattened[3] = m.m14(); // persp0
flattened[4] = m.m21(); // skewX
flattened[5] = m.m22(); // scaleY
flattened[6] = m.m23();
flattened[7] = m.m24(); // persp1
flattened[8] = m.m31();
flattened[9] = m.m32();
flattened[10] = m.m33();
flattened[11] = m.m34();
flattened[12] = m.m41(); // transX
flattened[13] = m.m42(); // transY
flattened[14] = m.m43();
flattened[15] = m.m44(); // persp2
}
void GLUtils::toSkMatrix(SkMatrix& matrix, const TransformationMatrix& m)
{
matrix[0] = m.m11(); // scaleX
matrix[1] = m.m21(); // skewX
matrix[2] = m.m41(); // transX
matrix[3] = m.m12(); // skewY
matrix[4] = m.m22(); // scaleY
matrix[5] = m.m42(); // transY
matrix[6] = m.m14(); // persp0
matrix[7] = m.m24(); // persp1
matrix[8] = m.m44(); // persp2
}
void GLUtils::setOrthographicMatrix(TransformationMatrix& ortho, float left, float top,
float right, float bottom, float nearZ, float farZ)
{
float deltaX = right - left;
float deltaY = top - bottom;
float deltaZ = farZ - nearZ;
if (!deltaX || !deltaY || !deltaZ)
return;
ortho.setM11(2.0f / deltaX);
ortho.setM41(-(right + left) / deltaX);
ortho.setM22(2.0f / deltaY);
ortho.setM42(-(top + bottom) / deltaY);
ortho.setM33(-2.0f / deltaZ);
ortho.setM43(-(nearZ + farZ) / deltaZ);
}
/////////////////////////////////////////////////////////////////////////////////////////
// GL & EGL error checks
/////////////////////////////////////////////////////////////////////////////////////////
static void crashIfOOM(GLint errorCode) {
const GLint OOM_ERROR_CODE = 0x505;
if (errorCode == OOM_ERROR_CODE) {
XLOG("Fatal OOM detected.");
CRASH();
}
}
void GLUtils::checkEglError(const char* op, EGLBoolean returnVal)
{
if (returnVal != EGL_TRUE)
XLOG("EGL ERROR - %s() returned %d\n", op, returnVal);
for (EGLint error = eglGetError(); error != EGL_SUCCESS; error = eglGetError()) {
XLOG("after %s() eglError (0x%x)\n", op, error);
crashIfOOM(error);
}
}
bool GLUtils::checkGlError(const char* op)
{
bool ret = false;
for (GLint error = glGetError(); error; error = glGetError()) {
XLOG("GL ERROR - after %s() glError (0x%x)\n", op, error);
crashIfOOM(error);
ret = true;
}
return ret;
}
bool GLUtils::checkGlErrorOn(void* p, const char* op)
{
bool ret = false;
for (GLint error = glGetError(); error; error = glGetError()) {
XLOG("GL ERROR on %x - after %s() glError (0x%x)\n", p, op, error);
crashIfOOM(error);
ret = true;
}
return ret;
}
/////////////////////////////////////////////////////////////////////////////////////////
// GL & EGL extension checks
/////////////////////////////////////////////////////////////////////////////////////////
bool GLUtils::isEGLImageSupported()
{
const char* eglExtensions = eglQueryString(eglGetCurrentDisplay(), EGL_EXTENSIONS);
const char* glExtensions = reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS));
return eglExtensions && glExtensions
&& strstr(eglExtensions, "EGL_KHR_image_base")
&& strstr(eglExtensions, "EGL_KHR_gl_texture_2D_image")
&& strstr(glExtensions, "GL_OES_EGL_image");
}
bool GLUtils::isEGLFenceSyncSupported()
{
const char* eglExtensions = eglQueryString(eglGetCurrentDisplay(), EGL_EXTENSIONS);
return eglExtensions && strstr(eglExtensions, "EGL_KHR_fence_sync");
}
/////////////////////////////////////////////////////////////////////////////////////////
// Textures utilities
/////////////////////////////////////////////////////////////////////////////////////////
static GLenum getInternalFormat(SkBitmap::Config config)
{
switch (config) {
case SkBitmap::kA8_Config:
return GL_ALPHA;
case SkBitmap::kARGB_4444_Config:
return GL_RGBA;
case SkBitmap::kARGB_8888_Config:
return GL_RGBA;
case SkBitmap::kRGB_565_Config:
return GL_RGB;
default:
return -1;
}
}
static GLenum getType(SkBitmap::Config config)
{
switch (config) {
case SkBitmap::kA8_Config:
return GL_UNSIGNED_BYTE;
case SkBitmap::kARGB_4444_Config:
return GL_UNSIGNED_SHORT_4_4_4_4;
case SkBitmap::kARGB_8888_Config:
return GL_UNSIGNED_BYTE;
case SkBitmap::kIndex8_Config:
return -1; // No type for compressed data.
case SkBitmap::kRGB_565_Config:
return GL_UNSIGNED_SHORT_5_6_5;
default:
return -1;
}
}
static EGLConfig defaultPbufferConfig(EGLDisplay display)
{
EGLConfig config;
EGLint numConfigs;
static const EGLint configAttribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
eglChooseConfig(display, configAttribs, &config, 1, &numConfigs);
GLUtils::checkEglError("eglPbufferConfig");
if (numConfigs != 1)
LOGI("eglPbufferConfig failed (%d)\n", numConfigs);
return config;
}
static EGLSurface createPbufferSurface(EGLDisplay display, const EGLConfig& config,
EGLint* errorCode)
{
const EGLint attribList[] = {
EGL_WIDTH, 1,
EGL_HEIGHT, 1,
EGL_NONE
};
EGLSurface surface = eglCreatePbufferSurface(display, config, attribList);
if (errorCode)
*errorCode = eglGetError();
else
GLUtils::checkEglError("eglCreatePbufferSurface");
if (surface == EGL_NO_SURFACE)
return EGL_NO_SURFACE;
return surface;
}
EGLContext GLUtils::createBackgroundContext(EGLContext sharedContext)
{
checkEglError("<init>");
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
checkEglError("eglGetDisplay");
if (display == EGL_NO_DISPLAY) {
XLOG("eglGetDisplay returned EGL_NO_DISPLAY");
return EGL_NO_CONTEXT;
}
EGLint majorVersion;
EGLint minorVersion;
EGLBoolean returnValue = eglInitialize(display, &majorVersion, &minorVersion);
checkEglError("eglInitialize", returnValue);
if (returnValue != EGL_TRUE) {
XLOG("eglInitialize failed\n");
return EGL_NO_CONTEXT;
}
EGLConfig config = defaultPbufferConfig(display);
EGLSurface surface = createPbufferSurface(display, config, 0);
EGLint surfaceConfigId;
EGLBoolean success = eglGetConfigAttrib(display, config, EGL_CONFIG_ID, &surfaceConfigId);
EGLint contextAttribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
EGLContext context = eglCreateContext(display, config, sharedContext, contextAttribs);
checkEglError("eglCreateContext");
if (context == EGL_NO_CONTEXT) {
XLOG("eglCreateContext failed\n");
return EGL_NO_CONTEXT;
}
returnValue = eglMakeCurrent(display, surface, surface, context);
checkEglError("eglMakeCurrent", returnValue);
if (returnValue != EGL_TRUE) {
XLOG("eglMakeCurrent failed\n");
return EGL_NO_CONTEXT;
}
return context;
}
void GLUtils::deleteTexture(GLuint* texture)
{
glDeleteTextures(1, texture);
GLUtils::checkGlError("glDeleteTexture");
*texture = 0;
}
GLuint GLUtils::createSampleTexture()
{
GLuint texture;
glGenTextures(1, &texture);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
GLubyte pixels[4 *3] = {
255, 0, 0,
0, 255, 0,
0, 0, 255,
255, 255, 0
};
glBindTexture(GL_TEXTURE_2D, texture);
GLUtils::checkGlError("glBindTexture");
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0, GL_RGB, GL_UNSIGNED_BYTE, pixels);
GLUtils::checkGlError("glTexImage2D");
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
return texture;
}
void GLUtils::createTextureWithBitmap(GLuint texture, SkBitmap& bitmap, GLint filter)
{
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glBindTexture(GL_TEXTURE_2D, texture);
GLUtils::checkGlError("glBindTexture");
SkBitmap::Config config = bitmap.getConfig();
int internalformat = getInternalFormat(config);
int type = getType(config);
bitmap.lockPixels();
glTexImage2D(GL_TEXTURE_2D, 0, internalformat, bitmap.width(), bitmap.height(),
0, internalformat, type, bitmap.getPixels());
bitmap.unlockPixels();
if (GLUtils::checkGlError("glTexImage2D")) {
XLOG("GL ERROR: glTexImage2D parameters are : bitmap.width() %d, bitmap.height() %d,"
" internalformat 0x%x, type 0x%x, bitmap.getPixels() %p",
bitmap.width(), bitmap.height(), internalformat, type, bitmap.getPixels());
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
// The following is a workaround -- remove when EGLImage texture upload is fixed.
GLuint fboID;
glGenFramebuffers(1, &fboID);
glBindFramebuffer(GL_FRAMEBUFFER, fboID);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
glCheckFramebufferStatus(GL_FRAMEBUFFER); // should return GL_FRAMEBUFFER_COMPLETE
glBindFramebuffer(GL_FRAMEBUFFER, 0); // rebind the standard FBO
glDeleteFramebuffers(1, &fboID);
}
void GLUtils::updateTextureWithBitmap(GLuint texture, SkBitmap& bitmap, GLint filter)
{
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glBindTexture(GL_TEXTURE_2D, texture);
GLUtils::checkGlError("glBindTexture");
SkBitmap::Config config = bitmap.getConfig();
int internalformat = getInternalFormat(config);
int type = getType(config);
bitmap.lockPixels();
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap.width(), bitmap.height(),
internalformat, type, bitmap.getPixels());
bitmap.unlockPixels();
if (GLUtils::checkGlError("glTexSubImage2D")) {
XLOG("GL ERROR: glTexSubImage2D parameters are : bitmap.width() %d, bitmap.height() %d,"
" internalformat 0x%x, type 0x%x, bitmap.getPixels() %p",
bitmap.width(), bitmap.height(), internalformat, type, bitmap.getPixels());
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
}
void GLUtils::createEGLImageFromTexture(GLuint texture, EGLImageKHR* image)
{
EGLClientBuffer buffer = reinterpret_cast<EGLClientBuffer>(texture);
static const EGLint attr[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE };
*image = eglCreateImageKHR(eglGetCurrentDisplay(), eglGetCurrentContext(),
EGL_GL_TEXTURE_2D_KHR, buffer, attr);
GLUtils::checkEglError("eglCreateImage", (*image != EGL_NO_IMAGE_KHR));
}
void GLUtils::createTextureFromEGLImage(GLuint texture, EGLImageKHR image, GLint filter)
{
glBindTexture(GL_TEXTURE_2D, texture);
GLUtils::checkGlError("glBindTexture");
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
}
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
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