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add frame rate limit

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This commit is contained in:
Zack Buhman 2025-12-04 09:10:08 -06:00
parent e2a45d1bec
commit 315512da12
1 changed files with 15 additions and 0 deletions
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15
src/main.c
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@ -1,4 +1,5 @@
#include <stdio.h> #include <stdio.h>
#include <unistd.h>
#include "glad/glad.h" #include "glad/glad.h"
@ -84,6 +85,10 @@ int main()
1, 1,
stdout); stdout);
const double frame_rate = 60.0;
const double first_frame = glfwGetTime();
double last_frame = first_frame;
double frames = 0;
while(!glfwWindowShouldClose(window)) { while(!glfwWindowShouldClose(window)) {
if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
glfwSetWindowShouldClose(window, true); glfwSetWindowShouldClose(window, true);
@ -106,10 +111,20 @@ int main()
glEnableVertexAttribArray(vertex_color_attrib_position); glEnableVertexAttribArray(vertex_color_attrib_position);
glEnableVertexAttribArray(vertex_color_attrib_color); glEnableVertexAttribArray(vertex_color_attrib_color);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDrawArrays(GL_TRIANGLES, 0, 3); glDrawArrays(GL_TRIANGLES, 0, 3);
glfwSwapBuffers(window); glfwSwapBuffers(window);
glfwPollEvents(); glfwPollEvents();
double next_frame = last_frame + 1.0 / frame_rate;
while (next_frame - glfwGetTime() > 0) {
double delta = next_frame - glfwGetTime();
glfwWaitEventsTimeout(delta);
}
//printf("fps %f\n", frames / (glfwGetTime() - first_frame));
frames += 1;
} }
glfwTerminate(); glfwTerminate();