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https://github.com/DrBeef/Doom3Quest.git
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Changes to make use of temporary frame buffer more obvious
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1 changed files with 17 additions and 14 deletions
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@ -5,14 +5,16 @@ GPL3
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#include "renderer/tr_local.h"
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#include "renderer/VertexCache.h"
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static GLuint m_framebuffer[3];
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static GLuint m_depthbuffer[3];
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#define FRAMEBUFFER_POOL_SIZE
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static GLuint m_framebuffer[FRAMEBUFFER_POOL_SIZE];
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static GLuint m_depthbuffer[FRAMEBUFFER_POOL_SIZE];
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static int m_framebuffer_width, m_framebuffer_height;
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static GLuint m_framebuffer_texture[3];
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static GLuint m_framebuffer_texture[FRAMEBUFFER_POOL_SIZE];
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static GLint drawFboId = 0;
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static int calldepth = 0;
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static int currentFramebufferIndex = 0;
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void R_InitFrameBuffer()
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@ -20,7 +22,7 @@ void R_InitFrameBuffer()
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m_framebuffer_width = glConfig.vidWidth;
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m_framebuffer_height = glConfig.vidHeight;
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for (int i = 0; i < 3; ++i) {
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for (int i = 0; i < FRAMEBUFFER_POOL_SIZE; ++i) {
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// Create texture
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glGenTextures(1, &m_framebuffer_texture[i]);
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glBindTexture(GL_TEXTURE_2D, m_framebuffer_texture[i]);
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@ -43,18 +45,18 @@ void R_InitFrameBuffer()
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void R_FrameBufferStart()
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{
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if (calldepth == 0) {
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if (currentFramebufferIndex == 0) {
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &drawFboId);
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}
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// Render to framebuffer
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glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer[calldepth]);
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glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer[currentFramebufferIndex]);
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glBindRenderbuffer(GL_RENDERBUFFER, 0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_framebuffer_texture[calldepth], 0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_framebuffer_texture[currentFramebufferIndex], 0);
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// Attach combined depth+stencil
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_depthbuffer[calldepth]);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_depthbuffer[calldepth]);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_depthbuffer[currentFramebufferIndex]);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_depthbuffer[currentFramebufferIndex]);
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GLenum result = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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if(result != GL_FRAMEBUFFER_COMPLETE)
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@ -65,18 +67,19 @@ void R_FrameBufferStart()
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glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
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qglClear( GL_COLOR_BUFFER_BIT );
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calldepth++;
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//Increment index in case this gets called again
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currentFramebufferIndex++;
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}
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void R_FrameBufferEnd()
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{
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calldepth--;
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currentFramebufferIndex--;
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if (calldepth == 0) {
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if (currentFramebufferIndex == 0) {
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glBindFramebuffer(GL_FRAMEBUFFER, drawFboId);
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} else {
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glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer[calldepth-1]);
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glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer[currentFramebufferIndex - 1]);
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}
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}
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