75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
#include "render.h"
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render_t *RENDER_CURRENT = NULL;
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render_t * renderInit(int32_t width, int32_t height, char *name) {
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// Can't contextualize twice
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if(RENDER_CURRENT != NULL) return NULL;
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// Attempt to init GLFW
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if(!glfwInit()) return NULL;
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// Initialize the renderer
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render_t *render = malloc(sizeof(render_t));
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if(!render) return NULL;
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render->width = width;
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render->height = height;
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// Create the window.
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render->window = glfwCreateWindow(width, height, name, NULL, NULL);
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if(!render->window) {
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free(render);
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glfwTerminate();
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return NULL;
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}
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// Make the window the context current
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glfwMakeContextCurrent(render->window);
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RENDER_CURRENT = render;
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// Listeners
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glfwSetWindowSizeCallback(render->window, &renderOnResize);
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//GLEnable Things
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glEnable(GL_DEPTH_TEST);
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glDepthMask(GL_TRUE);
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glDepthFunc(GL_LEQUAL);
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return render;
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}
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void renderFrame(render_t *render) {
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glBegin(GL_TRIANGLES);
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glColor3f(1, 0, 0);
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glVertex3f(-1, -1, 0);
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glColor3f(0, 1, 0);
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glVertex3f(0, 1, 0);
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glColor3f(0, 0, 1);
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glVertex3f(1, -1, 0);
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glEnd();
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}
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bool renderDispose(render_t *render) {
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// Cleanup the callback
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glfwSetWindowSizeCallback(render->window, NULL);
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// Free up the renderer
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free(render);
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RENDER_CURRENT = NULL;
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// Terminate the GLFW context.
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glfwTerminate();
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return true;
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}
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void renderOnResize(GLFWwindow *window, int32_t width, int32_t height) {
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RENDER_CURRENT->width = width;
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RENDER_CURRENT->height = height;
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glViewport(0, 0, width, height);
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} |