Tleety
40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
#include "PrecompiledHeader.h"
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#include "gBuffer.h"
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bool GBuffer::Init(unsigned int WindowWidth, unsigned int WindowHeight)
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{
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// Create the FBO
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glGenFramebuffers(1, &m_fbo);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbo);
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// Create the gbuffer textures
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glGenTextures(ARRAY_SIZE_IN_ELEMENTS(m_textures), m_textures);
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glGenTextures(1, &m_depthTexture);
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for (unsigned int i = 0 ; i < ARRAY_SIZE_IN_ELEMENTS(m_textures) ; i++) {
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glBindTexture(GL_TEXTURE_2D, m_textures[i]);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB32F, WindowWidth, WindowHeight, 0, GL_RGB, GL_FLOAT, NULL);
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glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i, GL_TEXTURE_2D, m_textures[i], 0);
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}
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// depth
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glBindTexture(GL_TEXTURE_2D, m_depthTexture);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, WindowWidth, WindowHeight, 0, GL_DEPTH_COMPONENT, GL_FLOAT,
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NULL);
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glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, m_depthTexture, 0);
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GLenum DrawBuffers[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
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glDrawBuffers(ARRAY_SIZE_IN_ELEMENTS(DrawBuffers), DrawBuffers);
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GLenum Status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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if (Status != GL_FRAMEBUFFER_COMPLETE) {
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printf("FB error, status: 0x%x\n", Status);
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return false;
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}
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// restore default FBO
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
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return true;
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} |