Warwick/c-engine
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Loaded in shader source code from file

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This commit is contained in:
Warwick 2025-06-25 16:19:07 +01:00
parent 902d08847d
commit 420845fd87
3 changed files with 23 additions and 16 deletions
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7
shaders/frag.glsl Normal file
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@ -0,0 +1,7 @@
#version 330 core
out vec4 FragColor;
void main()
{
FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);
}

8
shaders/vert.glsl Normal file
View file

@ -0,0 +1,8 @@
#version 330 core
layout (location = 0) in vec3 aPos;
void main()
{
gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
}

24
src/main.c
View file

@ -9,26 +9,15 @@
const unsigned int SCR_WIDTH = 800;
const unsigned int SCR_HEIGHT = 600;
const char *vertexShaderSource =
"#version 330 core\n"
"layout (location = 0) in vec3 aPos;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);\n"
"}\0";
const char *fragmentShaderSource =
"#version 330 core\n"
"out vec4 FragColor;\n"
"void main()\n"
"{\n"
" FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);\n"
"}\n\0";
int main(int argc, char *argv[]) {
SDL_Window *window;
SDL_Renderer *renderer;
SDL_GLContext glcontext;
SDL_Event event;
const char *vertexShaderSource = SDL_LoadFile("shaders/vert.glsl", NULL);
const char *fragmentShaderSource = SDL_LoadFile("shaders/frag.glsl", NULL);
if (!SDL_Init(SDL_INIT_VIDEO)) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s",
SDL_GetError());
@ -47,7 +36,7 @@ int main(int argc, char *argv[]) {
SDL_GetError());
return EXIT_FAILURE;
}
SDL_GLContext glcontext = SDL_GL_CreateContext(window);
glcontext = SDL_GL_CreateContext(window);
if (!glcontext) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Couldn't create OpenGL Context: %s", SDL_GetError());
@ -89,6 +78,9 @@ int main(int argc, char *argv[]) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Failed to compile fragment shader: %s", infoLog);
}
// Free source code memory
SDL_free((void *)vertexShaderSource);
SDL_free((void *)fragmentShaderSource);
// link shaders
unsigned int shaderProgram = glCreateProgram();
glAttachShader(shaderProgram, vertexShader);