added debug-event-markers for opengl so that you're able to set markers for renderdoc or other gpu debuggers what your program is currently doing

src/external/glad.h

@@ -3446,6 +3446,19 @@ typedef void (APIENTRYP PFNGLBLENDFUNCSEPARATEEXTPROC)(GLenum sfactorRGB, GLenum
 GLAPI PFNGLBLENDFUNCSEPARATEEXTPROC glad_glBlendFuncSeparateEXT;
 #define glBlendFuncSeparateEXT glad_glBlendFuncSeparateEXT
 #endif
+#ifndef GL_EXT_debug_marker
+#define GL_EXT_debug_marker 1
+GLAPI int GLAD_GL_EXT_debug_marker;
+typedef void (APIENTRYP PFNGLINSERTEVENTMARKEREXTPROC)(GLsizei length, const GLchar *marker);
+GLAPI PFNGLINSERTEVENTMARKEREXTPROC glad_glInsertEventMarkerEXT;
+#define glInsertEventMarkerEXT glad_glInsertEventMarkerEXT
+typedef void (APIENTRYP PFNGLPUSHGROUPMARKEREXTPROC)(GLsizei length, const GLchar *marker);
+GLAPI PFNGLPUSHGROUPMARKEREXTPROC glad_glPushGroupMarkerEXT;
+#define glPushGroupMarkerEXT glad_glPushGroupMarkerEXT
+typedef void (APIENTRYP PFNGLPOPGROUPMARKEREXTPROC)(void);
+GLAPI PFNGLPOPGROUPMARKEREXTPROC glad_glPopGroupMarkerEXT;
+#define glPopGroupMarkerEXT glad_glPopGroupMarkerEXT
+#endif
 #ifndef GL_EXT_framebuffer_blit
 #define GL_EXT_framebuffer_blit 1
 GLAPI int GLAD_GL_EXT_framebuffer_blit;
@@ -4209,6 +4222,7 @@ int GLAD_GL_ARB_vertex_shader;
 int GLAD_GL_ARB_vertex_attrib_binding;
 int GLAD_GL_ARB_vertex_program;
 int GLAD_GL_EXT_texture_compression_s3tc;
+int GLAD_GL_EXT_debug_marker;
 int GLAD_GL_EXT_texture_swizzle;
 int GLAD_GL_ARB_texture_multisample;
 int GLAD_GL_ARB_texture_rg;
@@ -4391,6 +4405,9 @@ PFNGLGETVARIANTARRAYOBJECTIVATIPROC glad_glGetVariantArrayObjectivATI;
 PFNGLBLENDCOLOREXTPROC glad_glBlendColorEXT;
 PFNGLBLENDEQUATIONSEPARATEEXTPROC glad_glBlendEquationSeparateEXT;
 PFNGLBLENDFUNCSEPARATEEXTPROC glad_glBlendFuncSeparateEXT;
+PFNGLINSERTEVENTMARKEREXTPROC glad_glInsertEventMarkerEXT;
+PFNGLPUSHGROUPMARKEREXTPROC glad_glPushGroupMarkerEXT;
+PFNGLPOPGROUPMARKEREXTPROC glad_glPopGroupMarkerEXT;
 PFNGLBLITFRAMEBUFFEREXTPROC glad_glBlitFramebufferEXT;
 PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC glad_glRenderbufferStorageMultisampleEXT;
 PFNGLISRENDERBUFFEREXTPROC glad_glIsRenderbufferEXT;
@@ -5190,6 +5207,12 @@ static void load_GL_EXT_blend_func_separate(GLADloadproc load) {
 	if(!GLAD_GL_EXT_blend_func_separate) return;
 	glad_glBlendFuncSeparateEXT = (PFNGLBLENDFUNCSEPARATEEXTPROC)load("glBlendFuncSeparateEXT");
 }
+static void load_GL_EXT_debug_marker(GLADloadproc load) {
+	if(!GLAD_GL_EXT_debug_marker) return;
+	glad_glInsertEventMarkerEXT = (PFNGLINSERTEVENTMARKEREXTPROC)load("glInsertEventMarkerEXT");
+	glad_glPushGroupMarkerEXT = (PFNGLPUSHGROUPMARKEREXTPROC)load("glPushGroupMarkerEXT");
+	glad_glPopGroupMarkerEXT = (PFNGLPOPGROUPMARKEREXTPROC)load("glPopGroupMarkerEXT");
+}
 static void load_GL_EXT_framebuffer_blit(GLADloadproc load) {
 	if(!GLAD_GL_EXT_framebuffer_blit) return;
 	glad_glBlitFramebufferEXT = (PFNGLBLITFRAMEBUFFEREXTPROC)load("glBlitFramebufferEXT");
@@ -5316,6 +5339,7 @@ static int find_extensionsGL(void) {
 	GLAD_GL_EXT_blend_color = has_ext("GL_EXT_blend_color");
 	GLAD_GL_EXT_blend_equation_separate = has_ext("GL_EXT_blend_equation_separate");
 	GLAD_GL_EXT_blend_func_separate = has_ext("GL_EXT_blend_func_separate");
+	GLAD_GL_EXT_debug_marker = has_ext("GL_EXT_debug_marker");
 	GLAD_GL_EXT_framebuffer_blit = has_ext("GL_EXT_framebuffer_blit");
 	GLAD_GL_EXT_framebuffer_multisample = has_ext("GL_EXT_framebuffer_multisample");
 	GLAD_GL_EXT_framebuffer_multisample_blit_scaled = has_ext("GL_EXT_framebuffer_multisample_blit_scaled");
@@ -5430,6 +5454,7 @@ int gladLoadGLLoader(GLADloadproc load) {
 	load_GL_EXT_blend_color(load);
 	load_GL_EXT_blend_equation_separate(load);
 	load_GL_EXT_blend_func_separate(load);
+	load_GL_EXT_debug_marker(load);
 	load_GL_EXT_framebuffer_blit(load);
 	load_GL_EXT_framebuffer_multisample(load);
 	load_GL_EXT_framebuffer_object(load);

src/rlgl.c

@@ -307,6 +307,8 @@ static PFNGLDELETEVERTEXARRAYSOESPROC glDeleteVertexArrays;
 //static PFNGLISVERTEXARRAYOESPROC glIsVertexArray;        // NOTE: Fails in WebGL, omitted
 #endif
 
+static bool debugMarkerSupported = false;
+
 // Compressed textures support flags
 static bool texCompDXTSupported = false;    // DDS texture compression support
 static bool texNPOTSupported = false;       // NPOT textures full support
@@ -1135,6 +1137,10 @@ void rlglInit(int width, int height)
             glGetFloatv(0x84FF, &maxAnisotropicLevel);   // GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT
         }
 
+        if(strcmp(extList[i], (const char *)"GL_EXT_debug_marker") == 0) {
+            debugMarkerSupported = true;
+        }
+
         // Clamp mirror wrap mode supported
         if (strcmp(extList[i], (const char *)"GL_EXT_texture_mirror_clamp") == 0) texClampMirrorSupported = true;
     }
@@ -1160,6 +1166,8 @@ void rlglInit(int width, int height)
     if (texAnisotropicFilterSupported) TraceLog(LOG_INFO, "[EXTENSION] Anisotropic textures filtering supported (max: %.0fX)", maxAnisotropicLevel);
     if (texClampMirrorSupported) TraceLog(LOG_INFO, "[EXTENSION] Clamp mirror wrap texture mode supported");
 
+    if (debugMarkerSupported) TraceLog(LOG_INFO, "[EXTENSION] Debug Marker supported");
+
     // Initialize buffers, default shaders and default textures
     //----------------------------------------------------------
 

src/rlgl.h

@@ -440,6 +440,9 @@ void rlUpdateMesh(Mesh mesh, int buffer, int numVertex);            // Update ve
 void rlDrawMesh(Mesh mesh, Material material, Matrix transform);    // Draw a 3d mesh with material and transform
 void rlUnloadMesh(Mesh *mesh);                                      // Unload mesh data from CPU and GPU
 
+// Debug Marker for Analysis
+void rlSetMarker(const char *text);
+
 // NOTE: There is a set of shader related functions that are available to end user,
 // to avoid creating function wrappers through core module, they have been directly declared in raylib.h