dormouse/OpenGL_Clock
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moving triangle, yay

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This commit is contained in:
Marcel Plch 2018-02-17 15:34:49 +01:00
parent 42936f5565
commit b9ed7c486e
1 changed files with 13 additions and 7 deletions
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20
src/main.c
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@ -11,7 +11,7 @@
// Include shader
#include "shader.h"
GLFWwindow* window;
static GLFWwindow* window;
int main(void) {
@ -29,7 +29,7 @@ int main(void) {
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
// Open a window and create its OpenGL context
window = glfwCreateWindow(1024, 768, "OpenGL Clock", NULL, NULL);
window = glfwCreateWindow(1280, 720, "OpenGL Clock", NULL, NULL);
if (window == NULL) {
fprintf(stderr, "Failed to open GLFW window. If you have an Intel GPU, they are not 3.3 compatible. Try the 2.1 version of the tutorials.\n");
getchar();
@ -67,9 +67,9 @@ int main(void) {
}
static GLfloat g_vertex_buffer_data[] = {
-1.0f, -1.0f, 0.0f,
1.0f, -1.0f, 0.0f,
0.0f, 1.0f, 0.0f
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, -1.0f,
0.0f, 1.0f, -0.2f
};
GLuint vertexbuffer;
@ -104,8 +104,14 @@ int main(void) {
// Use our shader
glUseProgram(programID);
glfwGetCursorPos(window, &xpos, &ypos);
g_vertex_buffer_data[0] = (float)xpos / 1024 * 2 - 1;
g_vertex_buffer_data[1] = 2 - (float)ypos / 768 * 2 - 1;
g_vertex_buffer_data[0] = (float)xpos / 1280 * 2 - 1 - 0.15;
g_vertex_buffer_data[1] = 2 - (float)ypos / 720 * 2 - 1 - 0.15;
g_vertex_buffer_data[3] = (float)xpos / 1280 * 2 - 1 + 0.15;
g_vertex_buffer_data[4] = 2 - (float)ypos / 720 * 2 - 1 - 0.15;
g_vertex_buffer_data[6] = (float)xpos / 1280 * 2 - 1;
g_vertex_buffer_data[7] = 2 - (float)ypos / 720 * 2 - 1 + 0.15;
GLuint vertexbuffer;
glGenBuffers(1, &vertexbuffer);