115 lines
2.7 KiB
C++
115 lines
2.7 KiB
C++
#include "sparrowrenderer.h"
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#include <cstdio>
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#include "camera.h"
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#include "framebuffer.h"
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#include "module.h"
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#include <chrono>
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#include <string.h>
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#include <iostream>
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#include "pipeline.h"
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#include "scene.h"
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#include "Version.h"
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GLuint SparrowRenderer::m_quadVAO = 0;
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GLuint SparrowRenderer::m_quadVBO = 0;
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const GLfloat QUAD_VERTICES[] = {
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-1.0f, -1.0f,
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3.0f, -1.0f,
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-1.0f, 3.0f
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};
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// main methods
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void SparrowRenderer::initGL(int w, int h)
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{
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int err = gl3wInit();
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if (err != 0)
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fprintf(stderr, "Warning: glewInit failed!\n");
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bool modernOpenglAvailable = gl3wIsSupported(3, 3);
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#ifdef RENDER_DEBUG
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printf("Using SparrowRenderer %d.%d\n\n", SparrowRenderer_VERSION_MAJOR, SparrowRenderer_VERSION_MINOR);
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if(modernOpenglAvailable)
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printf("Modern OpenGL available.\n");
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printf("OpenGL %s\nGLSL %s\nRenderer %s\nVendor %s\n",
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glGetString(GL_VERSION),
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glGetString(GL_SHADING_LANGUAGE_VERSION),
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glGetString(GL_RENDERER),
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glGetString(GL_VENDOR));
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#endif
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if(!modernOpenglAvailable)
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{
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fprintf(stderr, "Warning: modern OpenGL not supported! (Opengl 3.3 Core)\nPlease update your drivers or get a real GPU.\n");
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exit(EXIT_FAILURE);
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}
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// allocate quad
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if(m_quadVAO == 0)
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{
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glGenVertexArrays(1, &m_quadVAO);
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glBindVertexArray(m_quadVAO);
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glGenBuffers(1, &m_quadVBO);
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glBindBuffer(GL_ARRAY_BUFFER, m_quadVBO);
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glBufferData(GL_ARRAY_BUFFER, 3 * 2 * sizeof(GLfloat), QUAD_VERTICES, GL_STATIC_DRAW);
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glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*2, NULL);
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glEnableVertexAttribArray(0);
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glBindVertexArray(0);
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}
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// set screen size
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resizeGL(w, h);
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}
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SparrowRenderer::~SparrowRenderer()
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{
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if(m_quadVAO != 0)
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{
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glDeleteVertexArrays(1, &m_quadVAO);
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glDeleteBuffers(1, &m_quadVBO);
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}
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}
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void SparrowRenderer::resizeGL(int w, int h)
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{
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width = w;
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height = h;
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if(m_scene != NULL)
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{
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if(m_scene->getPipeline() != NULL)
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m_scene->getPipeline()->resizeGL(w, h);
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}
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}
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void SparrowRenderer::renderGL()
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{
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if(m_scene != NULL && m_scene->getPipeline() != NULL)
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{
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m_scene->getPipeline()->renderGL(m_scene);
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}
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glFinish();
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}
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// utils
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void SparrowRenderer::drawQuad()
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{
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glBindVertexArray(m_quadVAO);
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glDrawArrays(GL_TRIANGLES, 0, 3);
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glBindVertexArray(0);
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}
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// scene methods
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void SparrowRenderer::setScene(Scene* myScene)
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{
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m_scene = myScene;
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if(m_scene == NULL || m_scene->getPipeline() == NULL)
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fprintf(stderr, "WARNING : incomplete scene class, rendering may not work properly.\n");
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}
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