X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=blobdiff_plain;f=src%2Fopengl.c;fp=src%2Fopengl.c;h=9fe7ea3f7a817c04a9aba0dd2c1b77328af3c375;hp=0000000000000000000000000000000000000000;hb=215f16e2f26cc2acc79255bab06f13452ec06ae5;hpb=827f01e0ede01a7dd640c8055f1a169cb85e32f9

diff --git a/src/opengl.c b/src/opengl.c
new file mode 100644
index 0000000..9fe7ea3
--- /dev/null
+++ b/src/opengl.c
@@ -0,0 +1,104 @@
+#include "opengl.h"
+#include "logger.h"
+
+static void gldebug_logger(unsigned int src, unsigned int type, unsigned int id,
+		unsigned int severity, int len, const char *msg, const void *cls);
+static const char *gldebug_srcstr(unsigned int src);
+static const char *gldebug_typestr(unsigned int type);
+static const char *gldebug_sevstr(unsigned int sev);
+
+struct GLCaps glcaps;
+
+int init_opengl(void)
+{
+	glewInit();
+
+	glcaps.debug = GLEW_ARB_debug_output;
+
+#ifndef NDEBUG
+	if(glcaps.debug) {
+		info_log("Installing OpenGL debug callback\n");
+		glDebugMessageCallback(gldebug_logger, 0);
+	}
+#endif
+
+	return 0;
+}
+
+
+static void gldebug_logger(unsigned int src, unsigned int type, unsigned int id,
+		unsigned int severity, int len, const char *msg, const void *cls)
+{
+	static const char *fmt = "[GLDEBUG] (%s) %s: %s\n";
+	switch(type) {
+	case GL_DEBUG_TYPE_ERROR:
+		error_log(fmt, gldebug_srcstr(src), gldebug_typestr(type), msg);
+		break;
+
+	case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
+	case GL_DEBUG_TYPE_PORTABILITY:
+	case GL_DEBUG_TYPE_PERFORMANCE:
+		warning_log(fmt, gldebug_srcstr(src), gldebug_typestr(type), msg);
+		break;
+
+	default:
+		debug_log(fmt, gldebug_srcstr(src), gldebug_typestr(type), msg);
+	}
+}
+
+static const char *gldebug_srcstr(unsigned int src)
+{
+	switch(src) {
+	case GL_DEBUG_SOURCE_API:
+		return "api";
+	case GL_DEBUG_SOURCE_WINDOW_SYSTEM:
+		return "wsys";
+	case GL_DEBUG_SOURCE_SHADER_COMPILER:
+		return "sdrc";
+	case GL_DEBUG_SOURCE_THIRD_PARTY:
+		return "3rdparty";
+	case GL_DEBUG_SOURCE_APPLICATION:
+		return "app";
+	case GL_DEBUG_SOURCE_OTHER:
+		return "other";
+	default:
+		break;
+	}
+	return "unknown";
+}
+
+static const char *gldebug_typestr(unsigned int type)
+{
+	switch(type) {
+	case GL_DEBUG_TYPE_ERROR:
+		return "error";
+	case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR:
+		return "deprecated";
+	case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
+		return "undefined behavior";
+	case GL_DEBUG_TYPE_PORTABILITY:
+		return "portability warning";
+	case GL_DEBUG_TYPE_PERFORMANCE:
+		return "performance warning";
+	case GL_DEBUG_TYPE_OTHER:
+		return "other";
+	default:
+		break;
+	}
+	return "unknown";
+}
+
+static const char *gldebug_sevstr(unsigned int sev)
+{
+	switch(sev) {
+	case GL_DEBUG_SEVERITY_HIGH:
+		return "high";
+	case GL_DEBUG_SEVERITY_MEDIUM:
+		return "medium";
+	case GL_DEBUG_SEVERITY_LOW:
+		return "low";
+	default:
+		break;
+	}
+	return "unknown";
+}