gsdx ogl:

* retry compilation when driver failed to compile with a static 'index' constraint. Replace previous AMD hack.
* clean context default attribute value
zzogl 4: clean context default attribute value too.
zzogl 3: backport texture size fix


git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5442 96395faa-99c1-11dd-bbfe-3dabce05a288

plugins/GSdx/GSDeviceOGL.cpp

@@ -39,8 +39,6 @@ GSDeviceOGL::GSDeviceOGL()
 	  , m_pipeline(0)
 	  , m_fbo(0)
 	  , m_fbo_read(0)
-	  , m_AMD_gpu(false)
-	  , m_enable_shader_AMD_hack(false)
 	  , m_vb_sr(NULL)
 	  , m_srv_changed(false)
 	  , m_ss_changed(false)
@@ -172,9 +170,8 @@ bool GSDeviceOGL::Create(GSWnd* wnd)
 		s = glGetString(GL_VERSION);
 		if (s == NULL) return false;
 		fprintf(stderr, "Supported Opengl version: %s on GPU: %s. Vendor: %s\n", s, glGetString(GL_RENDERER), glGetString(GL_VENDOR));
-		if ( strcmp((const char*)glGetString(GL_VENDOR), "ATI Technologies Inc.") == 0 ) {
-			m_AMD_gpu = true;
-		}
+		// Could be useful to detect the GPU vendor:
+		// if ( strcmp((const char*)glGetString(GL_VENDOR), "ATI Technologies Inc.") == 0 )
 
 		GLuint dot = 0;
 		while (s[dot] != '\0' && s[dot] != '.') dot++;
@@ -204,7 +201,7 @@ bool GSDeviceOGL::Create(GSWnd* wnd)
 	}
 
 	// FIXME disable it when code is ready
-	glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
+	// glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
 
 	m_window = wnd;
 
@@ -385,9 +382,6 @@ bool GSDeviceOGL::Create(GSWnd* wnd)
 	// ****************************************************************
 	// HW renderer shader
 	// ****************************************************************
-	if (m_AMD_gpu) {
-		m_enable_shader_AMD_hack = true; // ....
-	}
 	CreateTextureFX();
 
 	// ****************************************************************
@@ -1266,7 +1260,7 @@ GLuint GSDeviceOGL::glCreateShaderProgramv_AMD_BUG_WORKAROUND(GLenum  type,  GLs
 			if (compiled) {
 				glAttachShader(program, shader);
 				// HACK TO SET CORRECTLY THE INDEX
-				if (type == GL_FRAGMENT_SHADER && m_enable_shader_AMD_hack) {
+				if (type == GL_FRAGMENT_SHADER) {
 					glBindFragDataLocationIndexed(program, 0, 0, "SV_Target0");
 					glBindFragDataLocationIndexed(program, 0, 1, "SV_Target1");
 				}
@@ -1355,23 +1349,18 @@ void GSDeviceOGL::CompileShaderFromSource(const std::string& glsl_file, const st
 	header.copy(header_str, header.size(), 0);
 	header_str[header.size()] = '\0';
 
-	// ... See below to test that index is correctly set by driver
-	if (m_AMD_gpu)
-		*program = glCreateShaderProgramv_AMD_BUG_WORKAROUND(type, 2, sources_array);
-	else
-		*program = glCreateShaderProgramv(type, 2, sources_array);
+	*program = glCreateShaderProgramv(type, 2, sources_array);
 
-	// DEBUG AMD failure...
-	// GLint index = -1;
-
-	// index    = glGetFragDataIndex(*program,  "SV_Target0");
-	// fprintf(stderr, "Frag0 index %d\n", index);
-	// assert(index == 0);
-
-	// index    = glGetFragDataIndex(*program,  "SV_Target1");
-	// fprintf(stderr, "Frag1 index %d\n", index);
-	// assert(index == 1);
-	// END DEBUG AMD
+	// Check the correctness of the driver
+	GLint slot = glGetFragDataLocation(*program, "SV_Target1");
+	if (slot == 0) { // <=> SV_Target1 used same slot as SV_Target0
+		GLint index = glGetFragDataIndex(*program,  "SV_Target1");
+		if (index != 1) {
+			fprintf(stderr, "Driver bug: failed to set the index, program will be recompiled\n");
+			glDeleteProgram(*program);
+			*program = glCreateShaderProgramv_AMD_BUG_WORKAROUND(type, 2, sources_array);
+		}
+	}
 
 	free(source_str);
 	free(header_str);

plugins/GSdx/GSDeviceOGL.h

@@ -485,9 +485,6 @@ class GSDeviceOGL : public GSDevice
 	GSVertexBufferStateOGL* m_vb;	  // vb_state for HW renderer
 	GSVertexBufferStateOGL* m_vb_sr; // vb_state for StretchRect
 
-	bool m_enable_shader_AMD_hack;
-	bool m_AMD_gpu;
-
 	struct {
 		GLuint ps[2];				 // program object
 		GSUniformBufferOGL* cb;		 // uniform buffer object

plugins/GSdx/GSWnd.cpp

@@ -236,9 +236,9 @@ bool GSWnd::CreateContext(int major, int minor)
 	// Get visual information
 	static int attrListDbl[] =
 	{
+		// GLX_X_RENDERABLE: If True is specified, then only frame buffer configurations that have associated X
+		// visuals (and can be used to render to Windows and/or GLX pixmaps) will be considered. The default value is GLX_DONT_CARE.
 		GLX_X_RENDERABLE    , True,
-		GLX_DRAWABLE_TYPE   , GLX_WINDOW_BIT,
-		GLX_RENDER_TYPE     , GLX_RGBA_BIT,
 		GLX_RED_SIZE        , 8,
 		GLX_GREEN_SIZE      , 8,
 		GLX_BLUE_SIZE       , 8,

plugins/zzogl-pg-cg/opengl/ZZoglCreate.cpp

@@ -244,9 +244,10 @@ inline void CreateOtherCheck()
 	GLint Max_Texture_Size_2d = 0;
 
 	glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE_NV, &Max_Texture_Size_NV);
-
 	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &Max_Texture_Size_2d);
 
+	g_MaxTexHeight = min(Max_Texture_Size_2d, Max_Texture_Size_NV);
+
 	ZZLog::Error_Log("Maximum texture size is %d for Tex_2d and %d for Tex_NV.", Max_Texture_Size_2d, Max_Texture_Size_NV);
 
 	if (Max_Texture_Size_NV < 1024)
@@ -494,8 +495,10 @@ bool ZZCreate(int _width, int _height)
 
 	CreateOtherCheck();
 
+	// Incorrect must check rectangle texture too. Now done directly on CreateOtherCheck()
+	//
 	// check the max texture width and height
-	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &g_MaxTexWidth);
+	///glGetIntegerv(GL_MAX_TEXTURE_SIZE, &g_MaxTexWidth);
     // Limit the texture size supported to 8192. We do not need bigger texture.
     // Besides the following assertion is false when texture are too big.
     // ZZoglFlush.cpp:2349:	assert(fblockstride >= 1.0f)

plugins/zzogl-pg/opengl/GLWinX11.cpp

@@ -210,9 +210,9 @@ bool GLWindow::CreateContextGL(int major, int minor)
 	// Get visual information
 	int attrListDbl[] =
 	{
+		// GLX_X_RENDERABLE: If True is specified, then only frame buffer configurations that have associated X
+		// visuals (and can be used to render to Windows and/or GLX pixmaps) will be considered. The default value is GLX_DONT_CARE.
 		GLX_X_RENDERABLE    , True,
-		GLX_DRAWABLE_TYPE   , GLX_WINDOW_BIT,
-		GLX_RENDER_TYPE     , GLX_RGBA_BIT,
 		GLX_RED_SIZE        , 8,
 		GLX_GREEN_SIZE      , 8,
 		GLX_BLUE_SIZE       , 8,
@@ -268,7 +268,7 @@ bool GLWindow::CreateContextGL(int major, int minor)
 		GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
 		//GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_DEBUG_BIT_ARB | GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
 		// FIXME : Request a debug context to ease opengl development
-#if defined(ZEROGS_DEVBUILD) || defined(_DEBUG)
+#if (defined(ZEROGS_DEVBUILD) || defined(_DEBUG)) && defined(OGL4_LOG)
 		GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_DEBUG_BIT_ARB,
 #endif
 		None
@@ -282,7 +282,10 @@ bool GLWindow::CreateContextGL(int major, int minor)
 
 	XSync( NativeDisplay, false);
 
-	glXMakeCurrent(NativeDisplay, NativeWindow, glxContext);
+	if (!glXMakeCurrent(NativeDisplay, NativeWindow, glxContext)) {
+		ZZLog::Error_Log("GLX: failed to attach the opengl context");
+		return false;
+	}
 
 	return true;
 }