115 lines
3.7 KiB
C++
115 lines
3.7 KiB
C++
#include "renderer.hpp"
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#include "shader.hpp"
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#include <scene/camera.hpp>
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#include <scene/scene.hpp>
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#include <scene/material.hpp>
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#include <scene/mesh.hpp>
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#include <iostream>
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using namespace inferno;
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RasterizeRenderer::RasterizeRenderer()
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{
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glGenFramebuffers(1, &mRenderTarget);
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glBindFramebuffer(GL_FRAMEBUFFER, mRenderTarget);
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glGenTextures(1, &mRenderTargetTexture);
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glBindTexture(GL_TEXTURE_2D, mRenderTargetTexture);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 800, 600, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glGenTextures(1, &mRenderTargetDepthTexture );
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glBindTexture(GL_TEXTURE_2D, mRenderTargetDepthTexture );
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glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, 800, 600, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
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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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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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// Attach the texture to the framebuffer.
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glFramebufferTexture2D( GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, mRenderTargetDepthTexture, 0 );
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mRenderTargetTexture, 0);
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assert(glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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RasterizeRenderer::~RasterizeRenderer()
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{
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}
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void RasterizeRenderer::setScene(Scene* scene)
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{
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mCurrentScene = scene;
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}
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void RasterizeRenderer::setTargetSize(glm::ivec2 size)
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{
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glBindFramebuffer(GL_FRAMEBUFFER, mRenderTarget);
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glBindTexture(GL_TEXTURE_2D, mRenderTargetTexture);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, size.x, size.y, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
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glBindTexture(GL_TEXTURE_2D, mRenderTargetDepthTexture);
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glTexImage2D( GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, size.x, size.y, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL );
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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mRenderTargetSize = size;
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}
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GLuint RasterizeRenderer::getRenderedTexture()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, mRenderTarget);
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return mRenderTargetTexture;
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}
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glm::ivec2 RasterizeRenderer::getTargetSize()
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{
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return mRenderTargetSize;
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}
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void RasterizeRenderer::prepare()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, mRenderTarget);
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glClearColor(0.1, 0.1, 0.1, 1.0);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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void RasterizeRenderer::draw()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, mRenderTarget);
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glViewport(0, 0, mRenderTargetSize.x, mRenderTargetSize.y);
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glEnable(GL_DEPTH_TEST);
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for (Mesh* m : mCurrentScene->getRenderables())
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{
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m->getMaterial()->getGlShader()->use();
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GLint uniTrans = glGetUniformLocation(m->getMaterial()->getGlShader()->getProgram(), "model");
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glUniformMatrix4fv(uniTrans, 1, GL_FALSE, glm::value_ptr(glm::mat4(1.0f)));
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GLint uniView = glGetUniformLocation(m->getMaterial()->getGlShader()->getProgram(), "view");
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glUniformMatrix4fv(uniView, 1, GL_FALSE, glm::value_ptr(mCurrentScene->getCamera()->getViewMatrix()));
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GLint uniProj = glGetUniformLocation(m->getMaterial()->getGlShader()->getProgram(), "proj");
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glUniformMatrix4fv(uniProj, 1, GL_FALSE, glm::value_ptr(mCurrentScene->getCamera()->getProjectionMatrix()));
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glBindVertexArray(m->getVAO());
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m->getEBO());
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glDrawElements(GL_TRIANGLES, m->getIndexCount() * sizeof(uint32_t), GL_UNSIGNED_INT, 0);
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}
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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