Merge pull request #17285 from bruvzg/gles_extension_checks

Add OpenGL extension support checks (Debug/FBO) and FBO fallback for GLES2

drivers/gles2/rasterizer_gles2.cpp

@@ -148,8 +148,8 @@ void RasterizerGLES2::initialize() {
 	}
 
 // GLVersion seems to be used for both GL and GL ES, so we need different version checks for them
-#ifdef OPENGL_ENABLED // OpenGL 3.3 Core Profile required
-	if (GLVersion.major < 3) {
+#ifdef OPENGL_ENABLED // OpenGL 2.1 Profile required
+	if (GLVersion.major < 2) {
 #else // OpenGL ES 3.0
 	if (GLVersion.major < 2) {
 #endif
@@ -160,36 +160,65 @@ void RasterizerGLES2::initialize() {
 				"Fatal error: Insufficient OpenGL / GLES driver support");
 	}
 
-#ifdef __APPLE__
-// FIXME glDebugMessageCallbackARB does not seem to work on Mac OS X and opengl 2, this may be an issue with our opengl canvas..
-#else
-	if (true || OS::get_singleton()->is_stdout_verbose()) {
-		glEnable(_EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
-		glDebugMessageCallbackARB(_gl_debug_print, NULL);
-		glEnable(_EXT_DEBUG_OUTPUT);
+#ifdef GLES_OVER_GL
+	//Test GL_ARB_framebuffer_object extension
+	if (!GLAD_GL_ARB_framebuffer_object) {
+		//Try older GL_EXT_framebuffer_object extension
+		if (GLAD_GL_EXT_framebuffer_object) {
+			glIsRenderbuffer = glIsRenderbufferEXT;
+			glBindRenderbuffer = glBindRenderbufferEXT;
+			glDeleteRenderbuffers = glDeleteRenderbuffersEXT;
+			glGenRenderbuffers = glGenRenderbuffersEXT;
+			glRenderbufferStorage = glRenderbufferStorageEXT;
+			glGetRenderbufferParameteriv = glGetRenderbufferParameterivEXT;
+			glIsFramebuffer = glIsFramebufferEXT;
+			glBindFramebuffer = glBindFramebufferEXT;
+			glDeleteFramebuffers = glDeleteFramebuffersEXT;
+			glGenFramebuffers = glGenFramebuffersEXT;
+			glCheckFramebufferStatus = glCheckFramebufferStatusEXT;
+			glFramebufferTexture1D = glFramebufferTexture1DEXT;
+			glFramebufferTexture2D = glFramebufferTexture2DEXT;
+			glFramebufferTexture3D = glFramebufferTexture3DEXT;
+			glFramebufferRenderbuffer = glFramebufferRenderbufferEXT;
+			glGetFramebufferAttachmentParameteriv = glGetFramebufferAttachmentParameterivEXT;
+			glGenerateMipmap = glGenerateMipmapEXT;
+		} else {
+			ERR_PRINT("Your system's graphic drivers seem not to support GL_ARB(EXT)_framebuffer_object OpenGL extension, sorry :(\n"
+					  "Try a drivers update, buy a new GPU or try software rendering on Linux; Godot will now crash with a segmentation fault.");
+			OS::get_singleton()->alert("Your system's graphic drivers seem not to support GL_ARB(EXT)_framebuffer_object OpenGL extension, sorry :(\n"
+									   "Godot Engine will self-destruct as soon as you acknowledge this error message.",
+					"Fatal error: Insufficient OpenGL / GLES driver support");
+		}
 	}
 #endif
+	if (true || OS::get_singleton()->is_stdout_verbose()) {
+		if (GLAD_GL_ARB_debug_output) {
+			glEnable(_EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
+			glDebugMessageCallbackARB(_gl_debug_print, NULL);
+			glEnable(_EXT_DEBUG_OUTPUT);
+		} else {
+			print_line("OpenGL debugging not supported!");
+		}
+	}
 
 #endif // GLAD_ENABLED
 
 		// For debugging
 #ifdef GLES_OVER_GL
-#ifdef __APPLE__
-// FIXME glDebugMessageCallbackARB does not seem to work on Mac OS X and opengl 2, this may be an issue with our opengl canvas..
-#else
-	glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_ERROR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
-	glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
-	glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
-	glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_PORTABILITY_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
-	glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_PERFORMANCE_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
-	glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_OTHER_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
-#endif
-#endif
-	/* glDebugMessageInsertARB(
+	if (GLAD_GL_ARB_debug_output) {
+		glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_ERROR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
+		glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
+		glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
+		glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_PORTABILITY_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
+		glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_PERFORMANCE_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
+		glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_OTHER_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE);
+		/* glDebugMessageInsertARB(
 			GL_DEBUG_SOURCE_API_ARB,
 			GL_DEBUG_TYPE_OTHER_ARB, 1,
 			GL_DEBUG_SEVERITY_HIGH_ARB, 5, "hello");
-	*/
+		*/
+	}
+#endif
 
 	const GLubyte *renderer = glGetString(GL_RENDERER);
 	print_line("OpenGL ES 2.0 Renderer: " + String((const char *)renderer));

drivers/gles3/rasterizer_gles3.cpp

@@ -160,29 +160,31 @@ void RasterizerGLES3::initialize() {
 				"Fatal error: Insufficient OpenGL / GLES driver support");
 	}
 
-#ifdef __APPLE__
-// FIXME glDebugMessageCallbackARB does not seem to work on Mac OS X and opengl 3, this may be an issue with our opengl canvas..
-#else
 	if (OS::get_singleton()->is_stdout_verbose()) {
-		glEnable(_EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
-		glDebugMessageCallbackARB(_gl_debug_print, NULL);
-		glEnable(_EXT_DEBUG_OUTPUT);
+		if (GLAD_GL_ARB_debug_output) {
+			glEnable(_EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
+			glDebugMessageCallbackARB(_gl_debug_print, NULL);
+			glEnable(_EXT_DEBUG_OUTPUT);
+		} else {
+			print_line("OpenGL debugging not supported!");
+		}
 	}
-#endif
 
 #endif // GLAD_ENABLED
 
 	/* // For debugging
-	glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_ERROR_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
-	glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
-	glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
-	glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_PORTABILITY_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
-	glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_PERFORMANCE_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
-	glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_OTHER_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
-	glDebugMessageInsertARB(
-			GL_DEBUG_SOURCE_API_ARB,
-			GL_DEBUG_TYPE_OTHER_ARB, 1,
-			GL_DEBUG_SEVERITY_HIGH_ARB,5, "hello");
+	if (GLAD_GL_ARB_debug_output) {
+		glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_ERROR_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
+		glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
+		glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
+		glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_PORTABILITY_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
+		glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_PERFORMANCE_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
+		glDebugMessageControlARB(GL_DEBUG_SOURCE_API_ARB,GL_DEBUG_TYPE_OTHER_ARB,GL_DEBUG_SEVERITY_HIGH_ARB,0,NULL,GL_TRUE);
+		glDebugMessageInsertARB(
+				GL_DEBUG_SOURCE_API_ARB,
+				GL_DEBUG_TYPE_OTHER_ARB, 1,
+				GL_DEBUG_SEVERITY_HIGH_ARB,5, "hello");
+	}
 	*/
 
 	const GLubyte *renderer = glGetString(GL_RENDERER);

thirdparty/glad/glad.c

@@ -1,6 +1,6 @@
 /*
 
-    OpenGL loader generated by glad 0.1.18a0 on Fri Mar  2 11:26:24 2018.
+    OpenGL loader generated by glad 0.1.18a0 on Mon Mar  5 18:43:52 2018.
 
     Language/Generator: C/C++
     Specification: gl
@@ -8,15 +8,16 @@
     Profile: compatibility
     Extensions:
         GL_ARB_debug_output,
-        GL_ARB_framebuffer_object
+        GL_ARB_framebuffer_object,
+        GL_EXT_framebuffer_object
     Loader: True
     Local files: False
     Omit khrplatform: False
 
     Commandline:
-        --profile="compatibility" --api="gl=3.3" --generator="c" --spec="gl" --extensions="GL_ARB_debug_output,GL_ARB_framebuffer_object"
+        --profile="compatibility" --api="gl=3.3" --generator="c" --spec="gl" --extensions="GL_ARB_debug_output,GL_ARB_framebuffer_object,GL_EXT_framebuffer_object"
     Online:
-        http://glad.dav1d.de/#profile=compatibility&language=c&specification=gl&loader=on&api=gl%3D3.3&extensions=GL_ARB_debug_output&extensions=GL_ARB_framebuffer_object
+        http://glad.dav1d.de/#profile=compatibility&language=c&specification=gl&loader=on&api=gl%3D3.3&extensions=GL_ARB_debug_output&extensions=GL_ARB_framebuffer_object&extensions=GL_EXT_framebuffer_object
 */
 
 #include <stdio.h>
@@ -973,11 +974,29 @@ PFNGLFRONTFACEPROC glad_glFrontFace;
 PFNGLGETBOOLEANI_VPROC glad_glGetBooleani_v;
 PFNGLCLEARBUFFERUIVPROC glad_glClearBufferuiv;
 int GLAD_GL_ARB_framebuffer_object;
+int GLAD_GL_EXT_framebuffer_object;
 int GLAD_GL_ARB_debug_output;
 PFNGLDEBUGMESSAGECONTROLARBPROC glad_glDebugMessageControlARB;
 PFNGLDEBUGMESSAGEINSERTARBPROC glad_glDebugMessageInsertARB;
 PFNGLDEBUGMESSAGECALLBACKARBPROC glad_glDebugMessageCallbackARB;
 PFNGLGETDEBUGMESSAGELOGARBPROC glad_glGetDebugMessageLogARB;
+PFNGLISRENDERBUFFEREXTPROC glad_glIsRenderbufferEXT;
+PFNGLBINDRENDERBUFFEREXTPROC glad_glBindRenderbufferEXT;
+PFNGLDELETERENDERBUFFERSEXTPROC glad_glDeleteRenderbuffersEXT;
+PFNGLGENRENDERBUFFERSEXTPROC glad_glGenRenderbuffersEXT;
+PFNGLRENDERBUFFERSTORAGEEXTPROC glad_glRenderbufferStorageEXT;
+PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC glad_glGetRenderbufferParameterivEXT;
+PFNGLISFRAMEBUFFEREXTPROC glad_glIsFramebufferEXT;
+PFNGLBINDFRAMEBUFFEREXTPROC glad_glBindFramebufferEXT;
+PFNGLDELETEFRAMEBUFFERSEXTPROC glad_glDeleteFramebuffersEXT;
+PFNGLGENFRAMEBUFFERSEXTPROC glad_glGenFramebuffersEXT;
+PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glad_glCheckFramebufferStatusEXT;
+PFNGLFRAMEBUFFERTEXTURE1DEXTPROC glad_glFramebufferTexture1DEXT;
+PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glad_glFramebufferTexture2DEXT;
+PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glad_glFramebufferTexture3DEXT;
+PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glad_glFramebufferRenderbufferEXT;
+PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glad_glGetFramebufferAttachmentParameterivEXT;
+PFNGLGENERATEMIPMAPEXTPROC glad_glGenerateMipmapEXT;
 static void load_GL_VERSION_1_0(GLADloadproc load) {
 	if(!GLAD_GL_VERSION_1_0) return;
 	glad_glCullFace = (PFNGLCULLFACEPROC)load("glCullFace");
@@ -1771,10 +1790,31 @@ static void load_GL_ARB_framebuffer_object(GLADloadproc load) {
 	glad_glRenderbufferStorageMultisample = (PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC)load("glRenderbufferStorageMultisample");
 	glad_glFramebufferTextureLayer = (PFNGLFRAMEBUFFERTEXTURELAYERPROC)load("glFramebufferTextureLayer");
 }
+static void load_GL_EXT_framebuffer_object(GLADloadproc load) {
+	if(!GLAD_GL_EXT_framebuffer_object) return;
+	glad_glIsRenderbufferEXT = (PFNGLISRENDERBUFFEREXTPROC)load("glIsRenderbufferEXT");
+	glad_glBindRenderbufferEXT = (PFNGLBINDRENDERBUFFEREXTPROC)load("glBindRenderbufferEXT");
+	glad_glDeleteRenderbuffersEXT = (PFNGLDELETERENDERBUFFERSEXTPROC)load("glDeleteRenderbuffersEXT");
+	glad_glGenRenderbuffersEXT = (PFNGLGENRENDERBUFFERSEXTPROC)load("glGenRenderbuffersEXT");
+	glad_glRenderbufferStorageEXT = (PFNGLRENDERBUFFERSTORAGEEXTPROC)load("glRenderbufferStorageEXT");
+	glad_glGetRenderbufferParameterivEXT = (PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC)load("glGetRenderbufferParameterivEXT");
+	glad_glIsFramebufferEXT = (PFNGLISFRAMEBUFFEREXTPROC)load("glIsFramebufferEXT");
+	glad_glBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC)load("glBindFramebufferEXT");
+	glad_glDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC)load("glDeleteFramebuffersEXT");
+	glad_glGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC)load("glGenFramebuffersEXT");
+	glad_glCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)load("glCheckFramebufferStatusEXT");
+	glad_glFramebufferTexture1DEXT = (PFNGLFRAMEBUFFERTEXTURE1DEXTPROC)load("glFramebufferTexture1DEXT");
+	glad_glFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)load("glFramebufferTexture2DEXT");
+	glad_glFramebufferTexture3DEXT = (PFNGLFRAMEBUFFERTEXTURE3DEXTPROC)load("glFramebufferTexture3DEXT");
+	glad_glFramebufferRenderbufferEXT = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC)load("glFramebufferRenderbufferEXT");
+	glad_glGetFramebufferAttachmentParameterivEXT = (PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC)load("glGetFramebufferAttachmentParameterivEXT");
+	glad_glGenerateMipmapEXT = (PFNGLGENERATEMIPMAPEXTPROC)load("glGenerateMipmapEXT");
+}
 static int find_extensionsGL(void) {
 	if (!get_exts()) return 0;
 	GLAD_GL_ARB_debug_output = has_ext("GL_ARB_debug_output");
 	GLAD_GL_ARB_framebuffer_object = has_ext("GL_ARB_framebuffer_object");
+	GLAD_GL_EXT_framebuffer_object = has_ext("GL_EXT_framebuffer_object");
 	free_exts();
 	return 1;
 }
@@ -1855,6 +1895,7 @@ int gladLoadGLLoader(GLADloadproc load) {
 	if (!find_extensionsGL()) return 0;
 	load_GL_ARB_debug_output(load);
 	load_GL_ARB_framebuffer_object(load);
+	load_GL_EXT_framebuffer_object(load);
 	return GLVersion.major != 0 || GLVersion.minor != 0;
 }
 

thirdparty/glad/glad/glad.h

@@ -1,6 +1,6 @@
 /*
 
-    OpenGL loader generated by glad 0.1.18a0 on Fri Mar  2 11:26:24 2018.
+    OpenGL loader generated by glad 0.1.18a0 on Mon Mar  5 18:43:52 2018.
 
     Language/Generator: C/C++
     Specification: gl
@@ -8,15 +8,16 @@
     Profile: compatibility
     Extensions:
         GL_ARB_debug_output,
-        GL_ARB_framebuffer_object
+        GL_ARB_framebuffer_object,
+        GL_EXT_framebuffer_object
     Loader: True
     Local files: False
     Omit khrplatform: False
 
     Commandline:
-        --profile="compatibility" --api="gl=3.3" --generator="c" --spec="gl" --extensions="GL_ARB_debug_output,GL_ARB_framebuffer_object"
+        --profile="compatibility" --api="gl=3.3" --generator="c" --spec="gl" --extensions="GL_ARB_debug_output,GL_ARB_framebuffer_object,GL_EXT_framebuffer_object"
     Online:
-        http://glad.dav1d.de/#profile=compatibility&language=c&specification=gl&loader=on&api=gl%3D3.3&extensions=GL_ARB_debug_output&extensions=GL_ARB_framebuffer_object
+        http://glad.dav1d.de/#profile=compatibility&language=c&specification=gl&loader=on&api=gl%3D3.3&extensions=GL_ARB_debug_output&extensions=GL_ARB_framebuffer_object&extensions=GL_EXT_framebuffer_object
 */
 
 
@@ -3681,6 +3682,57 @@ GLAPI PFNGLSECONDARYCOLORP3UIVPROC glad_glSecondaryColorP3uiv;
 #define GL_DEBUG_SEVERITY_HIGH_ARB 0x9146
 #define GL_DEBUG_SEVERITY_MEDIUM_ARB 0x9147
 #define GL_DEBUG_SEVERITY_LOW_ARB 0x9148
+#define GL_INVALID_FRAMEBUFFER_OPERATION_EXT 0x0506
+#define GL_MAX_RENDERBUFFER_SIZE_EXT 0x84E8
+#define GL_FRAMEBUFFER_BINDING_EXT 0x8CA6
+#define GL_RENDERBUFFER_BINDING_EXT 0x8CA7
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT 0x8CD0
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT 0x8CD1
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT 0x8CD2
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT 0x8CD3
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT 0x8CD4
+#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5
+#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT 0x8CD6
+#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT 0x8CD7
+#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT 0x8CD9
+#define GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT 0x8CDA
+#define GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT 0x8CDB
+#define GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT 0x8CDC
+#define GL_FRAMEBUFFER_UNSUPPORTED_EXT 0x8CDD
+#define GL_MAX_COLOR_ATTACHMENTS_EXT 0x8CDF
+#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
+#define GL_COLOR_ATTACHMENT1_EXT 0x8CE1
+#define GL_COLOR_ATTACHMENT2_EXT 0x8CE2
+#define GL_COLOR_ATTACHMENT3_EXT 0x8CE3
+#define GL_COLOR_ATTACHMENT4_EXT 0x8CE4
+#define GL_COLOR_ATTACHMENT5_EXT 0x8CE5
+#define GL_COLOR_ATTACHMENT6_EXT 0x8CE6
+#define GL_COLOR_ATTACHMENT7_EXT 0x8CE7
+#define GL_COLOR_ATTACHMENT8_EXT 0x8CE8
+#define GL_COLOR_ATTACHMENT9_EXT 0x8CE9
+#define GL_COLOR_ATTACHMENT10_EXT 0x8CEA
+#define GL_COLOR_ATTACHMENT11_EXT 0x8CEB
+#define GL_COLOR_ATTACHMENT12_EXT 0x8CEC
+#define GL_COLOR_ATTACHMENT13_EXT 0x8CED
+#define GL_COLOR_ATTACHMENT14_EXT 0x8CEE
+#define GL_COLOR_ATTACHMENT15_EXT 0x8CEF
+#define GL_DEPTH_ATTACHMENT_EXT 0x8D00
+#define GL_STENCIL_ATTACHMENT_EXT 0x8D20
+#define GL_FRAMEBUFFER_EXT 0x8D40
+#define GL_RENDERBUFFER_EXT 0x8D41
+#define GL_RENDERBUFFER_WIDTH_EXT 0x8D42
+#define GL_RENDERBUFFER_HEIGHT_EXT 0x8D43
+#define GL_RENDERBUFFER_INTERNAL_FORMAT_EXT 0x8D44
+#define GL_STENCIL_INDEX1_EXT 0x8D46
+#define GL_STENCIL_INDEX4_EXT 0x8D47
+#define GL_STENCIL_INDEX8_EXT 0x8D48
+#define GL_STENCIL_INDEX16_EXT 0x8D49
+#define GL_RENDERBUFFER_RED_SIZE_EXT 0x8D50
+#define GL_RENDERBUFFER_GREEN_SIZE_EXT 0x8D51
+#define GL_RENDERBUFFER_BLUE_SIZE_EXT 0x8D52
+#define GL_RENDERBUFFER_ALPHA_SIZE_EXT 0x8D53
+#define GL_RENDERBUFFER_DEPTH_SIZE_EXT 0x8D54
+#define GL_RENDERBUFFER_STENCIL_SIZE_EXT 0x8D55
 #ifndef GL_ARB_debug_output
 #define GL_ARB_debug_output 1
 GLAPI int GLAD_GL_ARB_debug_output;
@@ -3701,6 +3753,61 @@ GLAPI PFNGLGETDEBUGMESSAGELOGARBPROC glad_glGetDebugMessageLogARB;
 #define GL_ARB_framebuffer_object 1
 GLAPI int GLAD_GL_ARB_framebuffer_object;
 #endif
+#ifndef GL_EXT_framebuffer_object
+#define GL_EXT_framebuffer_object 1
+GLAPI int GLAD_GL_EXT_framebuffer_object;
+typedef GLboolean (APIENTRYP PFNGLISRENDERBUFFEREXTPROC)(GLuint renderbuffer);
+GLAPI PFNGLISRENDERBUFFEREXTPROC glad_glIsRenderbufferEXT;
+#define glIsRenderbufferEXT glad_glIsRenderbufferEXT
+typedef void (APIENTRYP PFNGLBINDRENDERBUFFEREXTPROC)(GLenum target, GLuint renderbuffer);
+GLAPI PFNGLBINDRENDERBUFFEREXTPROC glad_glBindRenderbufferEXT;
+#define glBindRenderbufferEXT glad_glBindRenderbufferEXT
+typedef void (APIENTRYP PFNGLDELETERENDERBUFFERSEXTPROC)(GLsizei n, const GLuint *renderbuffers);
+GLAPI PFNGLDELETERENDERBUFFERSEXTPROC glad_glDeleteRenderbuffersEXT;
+#define glDeleteRenderbuffersEXT glad_glDeleteRenderbuffersEXT
+typedef void (APIENTRYP PFNGLGENRENDERBUFFERSEXTPROC)(GLsizei n, GLuint *renderbuffers);
+GLAPI PFNGLGENRENDERBUFFERSEXTPROC glad_glGenRenderbuffersEXT;
+#define glGenRenderbuffersEXT glad_glGenRenderbuffersEXT
+typedef void (APIENTRYP PFNGLRENDERBUFFERSTORAGEEXTPROC)(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+GLAPI PFNGLRENDERBUFFERSTORAGEEXTPROC glad_glRenderbufferStorageEXT;
+#define glRenderbufferStorageEXT glad_glRenderbufferStorageEXT
+typedef void (APIENTRYP PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC)(GLenum target, GLenum pname, GLint *params);
+GLAPI PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC glad_glGetRenderbufferParameterivEXT;
+#define glGetRenderbufferParameterivEXT glad_glGetRenderbufferParameterivEXT
+typedef GLboolean (APIENTRYP PFNGLISFRAMEBUFFEREXTPROC)(GLuint framebuffer);
+GLAPI PFNGLISFRAMEBUFFEREXTPROC glad_glIsFramebufferEXT;
+#define glIsFramebufferEXT glad_glIsFramebufferEXT
+typedef void (APIENTRYP PFNGLBINDFRAMEBUFFEREXTPROC)(GLenum target, GLuint framebuffer);
+GLAPI PFNGLBINDFRAMEBUFFEREXTPROC glad_glBindFramebufferEXT;
+#define glBindFramebufferEXT glad_glBindFramebufferEXT
+typedef void (APIENTRYP PFNGLDELETEFRAMEBUFFERSEXTPROC)(GLsizei n, const GLuint *framebuffers);
+GLAPI PFNGLDELETEFRAMEBUFFERSEXTPROC glad_glDeleteFramebuffersEXT;
+#define glDeleteFramebuffersEXT glad_glDeleteFramebuffersEXT
+typedef void (APIENTRYP PFNGLGENFRAMEBUFFERSEXTPROC)(GLsizei n, GLuint *framebuffers);
+GLAPI PFNGLGENFRAMEBUFFERSEXTPROC glad_glGenFramebuffersEXT;
+#define glGenFramebuffersEXT glad_glGenFramebuffersEXT
+typedef GLenum (APIENTRYP PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)(GLenum target);
+GLAPI PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glad_glCheckFramebufferStatusEXT;
+#define glCheckFramebufferStatusEXT glad_glCheckFramebufferStatusEXT
+typedef void (APIENTRYP PFNGLFRAMEBUFFERTEXTURE1DEXTPROC)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+GLAPI PFNGLFRAMEBUFFERTEXTURE1DEXTPROC glad_glFramebufferTexture1DEXT;
+#define glFramebufferTexture1DEXT glad_glFramebufferTexture1DEXT
+typedef void (APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+GLAPI PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glad_glFramebufferTexture2DEXT;
+#define glFramebufferTexture2DEXT glad_glFramebufferTexture2DEXT
+typedef void (APIENTRYP PFNGLFRAMEBUFFERTEXTURE3DEXTPROC)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
+GLAPI PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glad_glFramebufferTexture3DEXT;
+#define glFramebufferTexture3DEXT glad_glFramebufferTexture3DEXT
+typedef void (APIENTRYP PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC)(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+GLAPI PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glad_glFramebufferRenderbufferEXT;
+#define glFramebufferRenderbufferEXT glad_glFramebufferRenderbufferEXT
+typedef void (APIENTRYP PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC)(GLenum target, GLenum attachment, GLenum pname, GLint *params);
+GLAPI PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glad_glGetFramebufferAttachmentParameterivEXT;
+#define glGetFramebufferAttachmentParameterivEXT glad_glGetFramebufferAttachmentParameterivEXT
+typedef void (APIENTRYP PFNGLGENERATEMIPMAPEXTPROC)(GLenum target);
+GLAPI PFNGLGENERATEMIPMAPEXTPROC glad_glGenerateMipmapEXT;
+#define glGenerateMipmapEXT glad_glGenerateMipmapEXT
+#endif
 
 #ifdef __cplusplus
 }