mirror of
https://github.com/MihailRis/voxelcore.git
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gbuffer refactor
This commit is contained in:
Astazium
parent
0ffefddee1
commit
0104585e10
2 changed files with 87 additions and 165 deletions
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@ -8,143 +8,62 @@ using namespace advanced_pipeline;
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static debug::Logger logger("gl-gbuffer");
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// TODO: REFACTOR
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void GBuffer::createColorBuffer() {
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if (colorBuffer == 0)
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glGenTextures(1, &colorBuffer);
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glBindTexture(GL_TEXTURE_2D, colorBuffer);
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glTexImage2D(
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GL_TEXTURE_2D,
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0,
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GL_RGB,
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width,
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height,
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0,
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GL_RGB,
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GL_UNSIGNED_BYTE,
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nullptr
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);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glFramebufferTexture2D(
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GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorBuffer, 0
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);
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void GBuffer::createBuffer(Buffer& buffer) {
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if (buffer.buffer == 0) {
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if (&buffer == &depthBuffer)
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glGenRenderbuffers(1, &depthBuffer.buffer);
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else
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glGenTextures(1, &buffer.buffer);
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}
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if (&buffer == &depthBuffer){
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glBindRenderbuffer(GL_RENDERBUFFER, depthBuffer.buffer);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height);
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glFramebufferRenderbuffer(
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GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthBuffer.buffer
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);
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} else {
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glBindTexture(GL_TEXTURE_2D, buffer.buffer);
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glTexImage2D(
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GL_TEXTURE_2D,
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0,
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buffer.internalformat,
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width,
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height,
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0,
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buffer.format,
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buffer.type,
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nullptr
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);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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if (&buffer != &ssaoBuffer)
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{
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glFramebufferTexture2D(
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GL_FRAMEBUFFER, buffer.attachment, GL_TEXTURE_2D, buffer.buffer, 0
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);
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}
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}
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}
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void GBuffer::createPositionsBuffer() {
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if (positionsBuffer == 0)
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glGenTextures(1, &positionsBuffer);
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glBindTexture(GL_TEXTURE_2D, positionsBuffer);
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glTexImage2D(
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GL_TEXTURE_2D,
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0,
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GL_RGBA16F,
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width,
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height,
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0,
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GL_RGBA,
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GL_FLOAT,
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nullptr
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);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glFramebufferTexture2D(
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GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, positionsBuffer, 0
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);
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}
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GBuffer::GBuffer(uint width, uint height)
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: width(width), height(height),
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void GBuffer::createNormalsBuffer() {
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if (normalsBuffer == 0)
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glGenTextures(1, &normalsBuffer);
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glBindTexture(GL_TEXTURE_2D, normalsBuffer);
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glTexImage2D(
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GL_TEXTURE_2D,
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0,
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GL_RGBA16F,
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width,
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height,
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0,
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GL_RGB,
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GL_FLOAT,
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nullptr
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);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glFramebufferTexture2D(
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GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, normalsBuffer, 0
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);
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}
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void GBuffer::createEmissionBuffer() {
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if (emissionBuffer == 0)
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glGenTextures(1, &emissionBuffer);
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glBindTexture(GL_TEXTURE_2D, emissionBuffer);
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glTexImage2D(
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GL_TEXTURE_2D,
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0,
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GL_R8,
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width,
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height,
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0,
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GL_RED,
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GL_FLOAT,
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nullptr
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);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glFramebufferTexture2D(
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GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT3, GL_TEXTURE_2D, emissionBuffer, 0
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);
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}
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void GBuffer::createDepthBuffer() {
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if (depthBuffer == 0)
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glGenRenderbuffers(1, &depthBuffer);
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glBindRenderbuffer(GL_RENDERBUFFER, depthBuffer);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height);
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glFramebufferRenderbuffer(
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GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthBuffer
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);
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}
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void GBuffer::createSSAOBuffer() {
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if (ssaoBuffer == 0)
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glGenTextures(1, &ssaoBuffer);
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glBindTexture(GL_TEXTURE_2D, ssaoBuffer);
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glTexImage2D(
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GL_TEXTURE_2D,
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0,
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GL_R16F,
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width,
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height,
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0,
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GL_RED,
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GL_FLOAT,
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nullptr
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);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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}
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GBuffer::GBuffer(uint width, uint height) : width(width), height(height) {
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colorBuffer {0, GL_RGB, GL_RGB, GL_UNSIGNED_BYTE, GL_COLOR_ATTACHMENT0},
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positionsBuffer {0, GL_RGBA16F, GL_RGBA, GL_FLOAT, GL_COLOR_ATTACHMENT1},
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normalsBuffer {0, GL_RGBA16F, GL_RGB, GL_FLOAT, GL_COLOR_ATTACHMENT2},
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emissionBuffer {0, GL_R8, GL_RED, GL_FLOAT, GL_COLOR_ATTACHMENT3},
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ssaoBuffer {0, GL_R16F, GL_RED, GL_FLOAT, 0},
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depthBuffer {0, 0, 0, 0, 0}
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{
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glGenFramebuffers(1, &fbo);
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glBindFramebuffer(GL_FRAMEBUFFER, fbo);
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createColorBuffer();
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createPositionsBuffer();
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createNormalsBuffer();
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createEmissionBuffer();
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createBuffer(colorBuffer);
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createBuffer(positionsBuffer);
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createBuffer(normalsBuffer);
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createBuffer(emissionBuffer);
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GLenum attachments[4] = {
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GL_COLOR_ATTACHMENT0,
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@ -154,7 +73,7 @@ GBuffer::GBuffer(uint width, uint height) : width(width), height(height) {
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};
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glDrawBuffers(4, attachments);
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createDepthBuffer();
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createBuffer(depthBuffer);
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int status;
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if ((status = glCheckFramebufferStatus(GL_FRAMEBUFFER)) != GL_FRAMEBUFFER_COMPLETE) {
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@ -164,9 +83,9 @@ GBuffer::GBuffer(uint width, uint height) : width(width), height(height) {
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glGenFramebuffers(1, &ssaoFbo);
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glBindFramebuffer(GL_FRAMEBUFFER, ssaoFbo);
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createSSAOBuffer();
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createBuffer(ssaoBuffer);
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glFramebufferTexture2D(
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GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, ssaoBuffer, 0
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GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, ssaoBuffer.buffer, 0
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);
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GLenum ssaoAttachments[1] = {GL_COLOR_ATTACHMENT0};
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glDrawBuffers(1, ssaoAttachments);
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@ -179,12 +98,12 @@ GBuffer::GBuffer(uint width, uint height) : width(width), height(height) {
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}
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GBuffer::~GBuffer() {
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glDeleteTextures(1, &colorBuffer);
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glDeleteTextures(1, &positionsBuffer);
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glDeleteTextures(1, &normalsBuffer);
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glDeleteTextures(1, &emissionBuffer);
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glDeleteTextures(1, &ssaoBuffer);
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glDeleteRenderbuffers(1, &depthBuffer);
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glDeleteTextures(1, &colorBuffer.buffer);
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glDeleteTextures(1, &positionsBuffer.buffer);
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glDeleteTextures(1, &normalsBuffer.buffer);
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glDeleteTextures(1, &emissionBuffer.buffer);
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glDeleteTextures(1, &ssaoBuffer.buffer);
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glDeleteRenderbuffers(1, &depthBuffer.buffer);
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glDeleteFramebuffers(1, &fbo);
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glDeleteFramebuffers(1, &ssaoFbo);
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}
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@ -204,23 +123,23 @@ void GBuffer::unbind() {
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void GBuffer::bindBuffers() const {
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glActiveTexture(GL_TEXTURE0 + TARGET_EMISSION);
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glBindTexture(GL_TEXTURE_2D, emissionBuffer);
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glBindTexture(GL_TEXTURE_2D, emissionBuffer.buffer);
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glActiveTexture(GL_TEXTURE0 + TARGET_NORMALS);
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glBindTexture(GL_TEXTURE_2D, normalsBuffer);
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glBindTexture(GL_TEXTURE_2D, normalsBuffer.buffer);
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glActiveTexture(GL_TEXTURE0 + TARGET_POSITIONS);
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glBindTexture(GL_TEXTURE_2D, positionsBuffer);
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glBindTexture(GL_TEXTURE_2D, positionsBuffer.buffer);
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glActiveTexture(GL_TEXTURE0 + TARGET_COLOR);
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glBindTexture(GL_TEXTURE_2D, colorBuffer);
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glBindTexture(GL_TEXTURE_2D, colorBuffer.buffer);
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if (TARGET_COLOR != 0)
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glActiveTexture(GL_TEXTURE0);
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}
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void GBuffer::bindSSAOBuffer() const {
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glBindTexture(GL_TEXTURE_2D, ssaoBuffer);
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glBindTexture(GL_TEXTURE_2D, ssaoBuffer.buffer);
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}
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void GBuffer::bindDepthBuffer(int drawFbo) {
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@ -239,24 +158,24 @@ void GBuffer::resize(uint width, uint height) {
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glBindFramebuffer(GL_FRAMEBUFFER, fbo);
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createDepthBuffer();
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createColorBuffer();
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createPositionsBuffer();
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createNormalsBuffer();
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createEmissionBuffer();
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createBuffer(depthBuffer);
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createBuffer(colorBuffer);
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createBuffer(positionsBuffer);
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createBuffer(normalsBuffer);
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createBuffer(emissionBuffer);
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glBindTexture(GL_TEXTURE_2D, 0);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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glBindFramebuffer(GL_FRAMEBUFFER, ssaoFbo);
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createSSAOBuffer();
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createBuffer(ssaoBuffer);
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glBindTexture(GL_TEXTURE_2D, 0);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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std::unique_ptr<ImageData> GBuffer::toImage() const {
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auto data = std::make_unique<ubyte[]>(width * height * 3);
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glBindTexture(GL_TEXTURE_2D, colorBuffer);
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glBindTexture(GL_TEXTURE_2D, colorBuffer.buffer);
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glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, data.get());
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glBindTexture(GL_TEXTURE_2D, 0);
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return std::make_unique<ImageData>(
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@ -25,22 +25,25 @@ public:
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std::unique_ptr<ImageData> toImage() const;
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private:
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struct Buffer {
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uint buffer;
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const int internalformat;
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const uint format;
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const uint type;
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const uint attachment;
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};
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uint width;
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uint height;
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uint fbo;
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uint colorBuffer = 0;
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uint positionsBuffer = 0;
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uint normalsBuffer = 0;
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uint emissionBuffer = 0;
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uint depthBuffer = 0;
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uint ssaoFbo = 0;
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uint ssaoBuffer = 0;
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Buffer colorBuffer;
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Buffer positionsBuffer;
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Buffer normalsBuffer;
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Buffer emissionBuffer;
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Buffer depthBuffer;
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uint ssaoFbo;
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Buffer ssaoBuffer;
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void createColorBuffer();
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void createPositionsBuffer();
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void createNormalsBuffer();
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void createEmissionBuffer();
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void createDepthBuffer();
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void createSSAOBuffer();
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void createBuffer(Buffer& buffer);
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};
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