Subfolder for shaders

Makefile

@@ -1,4 +1,4 @@
-CFLAGS=-Wall -Wextra -g -pedantic -fenable-matrix -Wno-gnu-zero-variadic-macro-arguments
+CFLAGS=-Wall -Wextra -g -pedantic -fenable-matrix -Wno-gnu-zero-variadic-macro-arguments -Wno-incompatible-pointer-types-discards-qualifiers
 LIBS=`pkg-config --libs glfw3 glew opengl` -lm
 
 hexnando: main.c Makefile

main.c

@@ -12,19 +12,26 @@
 #define log_err(str, ...) do { fprintf(stderr, "[ERROR] (%s:%d): " str "\n", __FILE__, __LINE__, ##__VA_ARGS__); } while (0)
 #define log_debug(str, ...) do { fprintf(stderr, "[DEBUG] (%s:%d): " str "\n", __FILE__, __LINE__, ##__VA_ARGS__); } while (0)
 
-/* Globals */
+
-const char *vertexShaderSource = "#version 330 core\n"
+char *read_entire_file(char *path)
-    "layout (location = 0) in vec3 aPos;\n"
+{
-    "void main()\n"
+    FILE *f = fopen(path, "rb");
-    "{\n"
+    size_t length = 0;
-    "   gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);\n"
+    char *buf = NULL;
-    "}\0";
+    if (f)
-const char *fragmentShaderSource = "#version 330 core\n"
+    {
-    "out vec4 FragColor;\n"
+        fseek(f, 0, SEEK_END);
-    "void main()\n"
+        length = ftell(f);
-    "{\n"
+        fseek(f, 0, SEEK_SET);
-    "   FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);\n"
+        if (length)
-    "}\n\0";
+        {
+            buf = malloc(length + 1);
+            fread(buf, 1, length, f);
+            buf[length] = '\0';
+        }
+    }
+    return buf;
+}
 
 static void glfw_error_callback(int errcode, const char *description)
 {
@@ -51,6 +58,10 @@ int main()
 
     // build and compile our shader program
     // ------------------------------------
+
+    char * vertexShaderSource = read_entire_file("shaders/vertex.glsl");
+    char *fragmentShaderSource = read_entire_file("shaders/fragment.glsl");
+    
     // vertex shader
     unsigned int vertex_shader = glCreateShader(GL_VERTEX_SHADER);
     glShaderSource(vertex_shader, 1, &vertexShaderSource, NULL);

shaders/fragment.glsl

@@ -0,0 +1,6 @@
+#version 330 core
+out vec4 color;
+void main()
+{
+    color = vec4(1.0f, 0.5f, 0.2f, 1.0f);
+}

shaders/vertex.glsl

@@ -0,0 +1,6 @@
+#version 330 core
+layout (location = 0) in vec3 pos;
+void main()
+{
+    gl_Position = vec4(pos, 1.0f);
+}