Initial commit - some engine bugs stopping compiling

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

@@ -0,0 +1,99 @@
+/*
+ * Core 3.3 debug profile using glfw to load
+ *
+ * GLAD: $GLAD --out-path=$tmp --api="gl:core" --extensions="" c --debug
+ * 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, ...) {
+    ASSERT(strcmp(name, "glClear") == 0, "got %s expected glClear", name);
+    ASSERT(apiproc != NULL, "glClear proc is null");
+    ASSERT((void*) apiproc == (void*) glad_glClear, "passed in proc is not actual implementation");
+    ASSERT((void*) apiproc != (void*) glad_debug_glClear, "passed in proc is debug implementation");
+    ASSERT(len_args == 1, "expected only one argument, got %d", len_args);
+
+    ++pre;
+
+    va_list args;
+    va_start(args, len_args);
+    int value = va_arg(args, int);
+    va_end(args);
+
+    ASSERT(value == GL_COLOR_BUFFER_BIT || value == GL_DEPTH_BUFFER_BIT, "invalid argument in debug callback");
+}
+
+static void post_call_gl_callback(void *ret, const char *name, GLADapiproc apiproc, int len_args, ...) {
+    ASSERT(strcmp(name, "glClear") == 0, "got %s expected glClear", name);
+    ASSERT(apiproc != NULL, "glClear proc is null");
+    ASSERT((void*) apiproc == (void*) glad_glClear, "passed in proc is not actual implementation");
+    ASSERT((void*) apiproc != (void*) glad_debug_glClear, "passed in proc is debug implementation");
+    ASSERT(len_args == 1, "expected only one argument, got %d", len_args);
+    ASSERT(ret == NULL, "return value not null");
+
+    ++post;
+
+    va_list args;
+    va_start(args, len_args);
+    int value = va_arg(args, int);
+    va_end(args);
+
+    ASSERT(value == GL_COLOR_BUFFER_BIT || value == GL_DEPTH_BUFFER_BIT, "invalid argument in debug callback");
+}
+
+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);
+
+    int version = gladLoadGL(glfwGetProcAddress);
+    ASSERT(version >= 3003, "glad version %d < 3003", version);
+    ASSERT(GLAD_VERSION_MAJOR(version) >= 3, "glad major version %d < 3", GLAD_VERSION_MAJOR(version));
+    ASSERT(GLAD_VERSION_MAJOR(version) > 3 || GLAD_VERSION_MINOR(version) >= 3, "glad minor version %d < 3", GLAD_VERSION_MINOR(version));
+    ASSERT(GLAD_GL_VERSION_3_3, "GL_VERSION_3_3 not set");
+
+    glViewport(0, 0, WIDTH, HEIGHT);
+    glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
+
+    gladSetGLPreCallback(pre_call_gl_callback);
+    gladSetGLPostCallback(post_call_gl_callback);
+
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    /* make sure install/uninstall is working as expected */
+    gladUninstallGLDebug();
+    glViewport(0, 0, WIDTH, HEIGHT);
+    glClear(GL_COLOR_BUFFER_BIT);
+    gladInstallGLDebug();
+
+    glClear(GL_DEPTH_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;
+}