Initial commit - some engine bugs stopping compiling

third-party/glad/test/c/run/gl/on-demand+debug/001/test.c

@@ -0,0 +1,65 @@
+/*
+ * Core 3.3 on demand debug profile using glad to load
+ *
+ * GLAD: $GLAD --out-path=$tmp --api="gl:core" --extensions="" c --debug --on-demand --loader
+ * COMPILE: $GCC -Wno-pedantic $test -o $tmp/test -I$tmp/include $tmp/src/gl.c -ldl -lglfw
+ * RUN: $tmp/test
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <glad/gl.h>
+#include <GLFW/glfw3.h>
+
+#define ASSERT(expression, message, args...) if(!(expression)) { fprintf(stderr, "%s(%d): " message "\n", __FILE__, __LINE__, ##args); exit(1); }
+#define WIDTH 50
+#define HEIGHT 50
+
+static int pre = 0;
+static int post = 0;
+
+static void pre_call_gl_callback(const char *name, GLADapiproc apiproc, int len_args, ...) {
+    (void) name;
+    (void) apiproc;
+    (void) len_args;
+    ++pre;
+}
+
+static void post_call_gl_callback(void *ret, const char *name, GLADapiproc apiproc, int len_args, ...) {
+    (void) ret;
+    (void) name;
+    (void) apiproc;
+    (void) len_args;
+    ++post;
+}
+
+int main(void) {
+    ASSERT(glfwInit(), "glfw init failed");
+
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+
+    GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "<test>", NULL, NULL);
+    ASSERT(window != NULL, "glfw window creation failed");
+    glfwMakeContextCurrent(window);
+
+    glViewport(0, 0, WIDTH, HEIGHT);
+
+    gladSetGLPreCallback(pre_call_gl_callback);
+    gladSetGLPostCallback(post_call_gl_callback);
+
+    glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    ASSERT(pre == 2, "pre callback called %d times, expected twice", pre);
+    ASSERT(post == 2, "post callback called %d times, expected twice", post);
+
+    glfwSwapBuffers(window);
+
+    glfwTerminate();
+
+    return 0;
+}