100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/*
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* Core 3.3 debug profile using glfw to load
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*
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* GLAD: $GLAD --out-path=$tmp --api="gl:core" --extensions="" c --debug
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* COMPILE: $GCC -Wno-pedantic $test -o $tmp/test -I$tmp/include $tmp/src/gl.c -ldl -lglfw
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* RUN: $tmp/test
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <glad/gl.h>
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#include <GLFW/glfw3.h>
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#define ASSERT(expression, message, args...) if(!(expression)) { fprintf(stderr, "%s(%d): " message "\n", __FILE__, __LINE__, ##args); exit(1); }
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#define WIDTH 50
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#define HEIGHT 50
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static int pre = 0;
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static int post = 0;
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static void pre_call_gl_callback(const char *name, GLADapiproc apiproc, int len_args, ...) {
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ASSERT(strcmp(name, "glClear") == 0, "got %s expected glClear", name);
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ASSERT(apiproc != NULL, "glClear proc is null");
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ASSERT((void*) apiproc == (void*) glad_glClear, "passed in proc is not actual implementation");
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ASSERT((void*) apiproc != (void*) glad_debug_glClear, "passed in proc is debug implementation");
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ASSERT(len_args == 1, "expected only one argument, got %d", len_args);
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++pre;
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va_list args;
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va_start(args, len_args);
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int value = va_arg(args, int);
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va_end(args);
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ASSERT(value == GL_COLOR_BUFFER_BIT || value == GL_DEPTH_BUFFER_BIT, "invalid argument in debug callback");
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}
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static void post_call_gl_callback(void *ret, const char *name, GLADapiproc apiproc, int len_args, ...) {
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ASSERT(strcmp(name, "glClear") == 0, "got %s expected glClear", name);
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ASSERT(apiproc != NULL, "glClear proc is null");
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ASSERT((void*) apiproc == (void*) glad_glClear, "passed in proc is not actual implementation");
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ASSERT((void*) apiproc != (void*) glad_debug_glClear, "passed in proc is debug implementation");
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ASSERT(len_args == 1, "expected only one argument, got %d", len_args);
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ASSERT(ret == NULL, "return value not null");
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++post;
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va_list args;
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va_start(args, len_args);
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int value = va_arg(args, int);
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va_end(args);
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ASSERT(value == GL_COLOR_BUFFER_BIT || value == GL_DEPTH_BUFFER_BIT, "invalid argument in debug callback");
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}
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int main(void) {
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ASSERT(glfwInit(), "glfw init failed");
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "<test>", NULL, NULL);
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ASSERT(window != NULL, "glfw window creation failed");
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glfwMakeContextCurrent(window);
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int version = gladLoadGL(glfwGetProcAddress);
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ASSERT(version >= 3003, "glad version %d < 3003", version);
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ASSERT(GLAD_VERSION_MAJOR(version) >= 3, "glad major version %d < 3", GLAD_VERSION_MAJOR(version));
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ASSERT(GLAD_VERSION_MAJOR(version) > 3 || GLAD_VERSION_MINOR(version) >= 3, "glad minor version %d < 3", GLAD_VERSION_MINOR(version));
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ASSERT(GLAD_GL_VERSION_3_3, "GL_VERSION_3_3 not set");
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glViewport(0, 0, WIDTH, HEIGHT);
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glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
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gladSetGLPreCallback(pre_call_gl_callback);
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gladSetGLPostCallback(post_call_gl_callback);
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glClear(GL_COLOR_BUFFER_BIT);
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/* make sure install/uninstall is working as expected */
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gladUninstallGLDebug();
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glViewport(0, 0, WIDTH, HEIGHT);
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glClear(GL_COLOR_BUFFER_BIT);
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gladInstallGLDebug();
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glClear(GL_DEPTH_BUFFER_BIT);
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ASSERT(pre == 2, "pre callback called %d times, expected twice", pre);
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ASSERT(post == 2, "post callback called %d times, expected twice", post);
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glfwSwapBuffers(window);
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glfwTerminate();
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return 0;
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}
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