From cf24722d84c7e4fd1d32365d720c291a48b9f9c8 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Mon, 7 Apr 2014 21:57:33 +0300
Subject: Add support for OpenGL extension GL_EXT_debug_label.

---
 src/graphicsmanager.cpp             | 12 ++++++++++++
 src/render/mgl.cpp                  |  2 ++
 src/render/mgl.h                    | 15 +++++++++++++++
 src/resources/openglimagehelper.cpp |  8 ++++++++
 4 files changed, 37 insertions(+)

(limited to 'src')

diff --git a/src/graphicsmanager.cpp b/src/graphicsmanager.cpp
index d158527e1..e1c5bf35d 100644
--- a/src/graphicsmanager.cpp
+++ b/src/graphicsmanager.cpp
@@ -821,6 +821,18 @@ void GraphicsManager::initOpenGLFunctions()
         logger->log1("found GL_GREMEDY_frame_terminator");
         assignFunction(glFrameTerminator, "glFrameTerminatorGREMEDY");
     }
+    if (supportExtension("GL_EXT_debug_label"))
+    {
+        logger->log1("found GL_EXT_debug_label");
+        assignFunction(glLabelObject, "glLabelObjectEXT");
+        if (!mglLabelObject)
+            assignFunction(glLabelObject, "glLabelObject");
+        if (!mglLabelObject)
+            assignFunction(glLabelObject, "glObjectLabel");
+        assignFunction(glGetObjectLabel, "glGetObjectLabelEXT");
+        if (!mglGetObjectLabel)
+            assignFunction(glGetObjectLabel, "glGetObjectLabel");
+    }
 
 #ifdef WIN32
     assignFunction(wglGetExtensionsString, "wglGetExtensionsStringARB");
diff --git a/src/render/mgl.cpp b/src/render/mgl.cpp
index bd67c2f0e..ff51c659d 100644
--- a/src/render/mgl.cpp
+++ b/src/render/mgl.cpp
@@ -43,6 +43,8 @@ defName(glSamplerParameteri);
 defName(glDebugMessageControl);
 defName(glDebugMessageCallback);
 defName(glFrameTerminator);
+defName(glLabelObject);
+defName(glGetObjectLabel);
 
 #ifdef WIN32
 defName(wglGetExtensionsString);
diff --git a/src/render/mgl.h b/src/render/mgl.h
index e2e710029..8fc98f8fe 100644
--- a/src/render/mgl.h
+++ b/src/render/mgl.h
@@ -74,6 +74,15 @@
 #define GL_DEBUG_SEVERITY_LOW             0x9148
 #endif
 
+#ifndef GL_EXT_debug_label
+#define GL_PROGRAM_PIPELINE_OBJECT_EXT    0x8A4F
+#define GL_PROGRAM_OBJECT_EXT             0x8B40
+#define GL_SHADER_OBJECT_EXT              0x8B48
+#define GL_BUFFER_OBJECT_EXT              0x9151
+#define GL_QUERY_OBJECT_EXT               0x9153
+#define GL_VERTEX_ARRAY_OBJECT_EXT        0x9154
+#endif
+
 #define defNameE(name) extern name##_t m##name
 
 typedef void (APIENTRY *glGenRenderbuffers_t)(GLsizei, GLuint *);
@@ -100,6 +109,10 @@ typedef void (APIENTRY *glSamplerParameteri_t)
 typedef void (APIENTRY *glDebugMessageControl_t) (GLenum source, GLenum type,
     GLenum severity, GLsizei count, const GLuint* ids, GLboolean enabled);
 typedef void (APIENTRY *glFrameTerminator_t) (void);
+typedef void (APIENTRY *glLabelObject_t) (GLenum type, GLuint object,
+    GLsizei length, const GLchar *label);
+typedef void (APIENTRY *glGetObjectLabel_t) (GLenum type, GLuint object,
+    GLsizei bufSize, GLsizei *length, GLchar *label);
 
 // callback
 typedef void (APIENTRY *GLDEBUGPROC_t) (GLenum source, GLenum type, GLuint id,
@@ -125,6 +138,8 @@ defNameE(glSamplerParameteri);
 defNameE(glDebugMessageControl);
 defNameE(glDebugMessageCallback);
 defNameE(glFrameTerminator);
+defNameE(glLabelObject);
+defNameE(glGetObjectLabel);
 
 #ifdef WIN32
 typedef const char* (APIENTRY * wglGetExtensionsString_t) (HDC hdc);
diff --git a/src/resources/openglimagehelper.cpp b/src/resources/openglimagehelper.cpp
index 262d839f7..ae67904f9 100644
--- a/src/resources/openglimagehelper.cpp
+++ b/src/resources/openglimagehelper.cpp
@@ -244,6 +244,14 @@ Image *OpenGLImageHelper::glLoad(SDL_Surface *tmpImage,
         tmpImage->w, tmpImage->h,
         0, GL_RGBA, GL_UNSIGNED_BYTE, tmpImage->pixels);
 
+#ifdef DEBUG_OPENGL
+    if (mglLabelObject)
+    {
+        const char *const text = "image text";
+//        mglLabelObject(GL_TEXTURE, texture, strlen(text), text);
+    }
+#endif
+
 /*
     GLint compressed;
     glGetTexLevelParameteriv(mTextureType, 0,
-- 
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