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Update Framebuffer resize code

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This commit is contained in:
Derek Christ
2021-01-12 09:17:48 +01:00
parent 737747a46c
commit e1a51b86b6
6 changed files with 56 additions and 38 deletions
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56
src/Framebuffer.cpp
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@@ -3,30 +3,12 @@
#include <cstddef>
#include <iostream>
Framebuffer::Framebuffer(uint32_t width, uint32_t height, ShaderProgram *shaderProgram)
Framebuffer::Framebuffer(uint32_t width, uint32_t height, ShaderProgram *shaderProgram) :
shaderProgram(shaderProgram)
{
this->shaderProgram = shaderProgram;
glGenFramebuffers(1, &FBO);
glGenTextures(2, textures);
glBindTexture(GL_TEXTURE_2D, textures[0]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glBindTexture(GL_TEXTURE_2D, textures[1]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, width, height, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glBindTexture(GL_TEXTURE_2D, 0);
bind();
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textures[0], 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, textures[1], 0);
unbind();
generateTextutes(width, height);
}
Framebuffer::~Framebuffer()
@@ -73,6 +55,38 @@ void Framebuffer::render(GLuint customTextureId)
shaderProgram->unbind();
}
void Framebuffer::changeDimensions(uint32_t width, uint32_t height)
{
// Delete old textures
glDeleteTextures(2, textures);
generateTextutes(width, height);
}
void Framebuffer::generateTextutes(uint32_t width, uint32_t height)
{
// Create new textures
glGenTextures(2, textures);
glBindTexture(GL_TEXTURE_2D, textures[0]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glBindTexture(GL_TEXTURE_2D, textures[1]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, width, height, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glBindTexture(GL_TEXTURE_2D, 0);
bind();
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textures[0], 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, textures[1], 0);
unbind();
}
void Framebuffer::setExposureCorrection(bool exposureCorrection)
{
shaderProgram->bind();