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GRAPHICS: Only use packed depth-stencil framebuffer if extensions allow it

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This commit is contained in:
Dries Harnie 2014-04-21 11:45:26 +02:00
parent 9f6cae54af
commit aa90e6848f
3 changed files with 32 additions and 11 deletions
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39
graphics/opengles2/framebuffer.cpp
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@ -25,21 +25,44 @@
#if defined(USE_GLES2) || defined(USE_OPENGL_SHADERS)
#include "graphics/opengles2/framebuffer.h"
#include "graphics/opengles2/extensions.h"
#ifdef USE_GLES2
#define GL_DEPTH24_STENCIL8 GL_DEPTH24_STENCIL8_OES
#endif
namespace Graphics {
static bool usePackedBuffer() {
#ifdef USE_GLES2
return Graphics::isExtensionSupported("GL_OES_packed_depth_stencil");
#endif
return true;
}
FrameBuffer::FrameBuffer(GLuint texture_name, uint width, uint height, uint texture_width, uint texture_height) : _colorTexture(texture_name), _width(width), _height(height) {
glGenFramebuffers(1, &_frameBuffer);
glGenRenderbuffers(1, &_depthRenderBuffer);
glBindRenderbuffer(GL_RENDERBUFFER, _depthRenderBuffer);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, texture_width, texture_height);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glGenRenderbuffers(2, &_renderBuffers[0]);
glBindFramebuffer(GL_FRAMEBUFFER, _frameBuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture_name, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, _depthRenderBuffer);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, _depthRenderBuffer);
if (usePackedBuffer()) {
glBindRenderbuffer(GL_RENDERBUFFER, _renderBuffers[0]);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, texture_width, texture_height);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, _renderBuffers[0]);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, _renderBuffers[0]);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
} else {
glBindRenderbuffer(GL_RENDERBUFFER, _renderBuffers[0]);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, texture_width, texture_height);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, _renderBuffers[0]);
glBindRenderbuffer(GL_RENDERBUFFER, _renderBuffers[1]);
glRenderbufferStorage(GL_RENDERBUFFER, GL_STENCIL_INDEX8, texture_width, texture_height);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, _renderBuffers[1]);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
}
glBindFramebuffer(GL_FRAMEBUFFER, _frameBuffer);
GLenum status=glCheckFramebufferStatus(GL_FRAMEBUFFER);
@ -51,7 +74,7 @@ FrameBuffer::FrameBuffer(GLuint texture_name, uint width, uint height, uint text
}
FrameBuffer::~FrameBuffer() {
glDeleteRenderbuffers(1, &_depthRenderBuffer);
glDeleteRenderbuffers(2, &_renderBuffers[0]);
glDeleteFramebuffers(1, &_frameBuffer);
}

2
graphics/opengles2/framebuffer.h
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@ -39,7 +39,7 @@ public:
private:
GLuint _colorTexture;
GLuint _depthRenderBuffer;
GLuint _renderBuffers[2];
GLuint _frameBuffer;
uint _width, _height;
};

2
graphics/opengles2/system_headers.h
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@ -37,8 +37,6 @@
#endif
#undef GL_GLEXT_PROTOTYPES
#define GL_DEPTH24_STENCIL8 GL_DEPTH24_STENCIL8_OES
#ifndef GL_BGRA
# define GL_BGRA GL_BGRA_EXT
#endif