GLDepthStencilView::GLDepthStencilView(uint32 width, uint32 height, ElementFormat ef, uint32 sampleCount, uint32 sampleQuality):
mLevel(-1),
mRBO(0),
mSampleCount(sampleCount),
mSampleQuaility(sampleQuality) {
mWidth = width;
mHeight = height;
mElementFormat = ef;
CHECK_GL_CALL(glGenRenderbuffers(1, &mRBO));
if(mRBO) {
glBindRenderbuffer(GL_RENDERBUFFER, mRBO);
if(mSampleCount <= 1 || !glRenderbufferStorageMultisampleEXT)
glRenderbufferStorage(GL_RENDERBUFFER, element_format_to_gl_format(ef), width, height);
else
glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, mSampleCount, element_format_to_gl_format(ef), width, height);
}
}
GLDepthStencilView::GLDepthStencilView(const TexturePtr& texture, int32 level):
mTexture(texture),
mLevel(level),
mRBO(0),
mSampleCount(1),
mSampleQuaility(1) {
GLTexture2D* glTexture = (GLTexture2D*)mTexture.get();
mTex = (GLuint)glTexture->getTextureId();
mWidth = glTexture->width(0);
mHeight = glTexture->height(0);
mElementFormat = glTexture->format();
CHECK_GL_CALL(glGenRenderbuffers(1, &mRBO));
if(mRBO) {
CHECK_GL_CALL(glBindRenderbuffer(GL_RENDERBUFFER, mRBO));
if(mSampleCount <= 1 || !glRenderbufferStorageMultisampleEXT) {
CHECK_GL_CALL(glRenderbufferStorage(GL_RENDERBUFFER, element_format_to_gl_format(mElementFormat), mWidth, mHeight));
}
else {
CHECK_GL_CALL(glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, mSampleCount, element_format_to_gl_format(mElementFormat), mWidth, mHeight));
}
}
}
SharedPtr<uint8> GLFrameBuffer::readFrameBufferData(int32 x, int32 y, uint32 width, uint32 height, ElementFormat format) {
GLint prevBuffer;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &prevBuffer);
#if defined(UKN_OSX_REQUEST_OPENGL_32_CORE_PROFILE)
glBindBuffer(GL_FRAMEBUFFER, mFBO);
#else
CHECK_GL_CALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFBO));
#endif
if(width == 0)
width = this->getViewport().width;
if(height == 0)
height = this->getViewport().height;
uint8* texData = new uint8[width * height * GetElementSize(format)];
CHECK_GL_CALL(glReadPixels(x,
y,
width,
height,
element_format_to_gl_format(format),
element_format_to_gl_element_type(format),
texData));
if(glGetError() != GL_NO_ERROR) {
log_error("GLGraphicDevice: error when read pixels");
}
#if defined(UKN_OSX_REQUEST_OPENGL_32_CORE_PROFILE)
CHECK_GL_CALL(glBindBuffer(GL_FRAMEBUFFER, prevBuffer));
#else
CHECK_GL_CALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, prevBuffer));
#endif
return SharedPtr<uint8>(texData);
}
