gsdx ogl: load GL_EXT_direct_state_access for sparse texture

They forgot to add is to the ARB extension...

plugins/GSdx/Renderers/OpenGL/GLLoader.cpp

@@ -26,6 +26,7 @@
 #ifdef __unix__
 PFNGLBLENDFUNCSEPARATEPROC             glBlendFuncSeparate                 = NULL;
 #endif
+PFNGLTEXTUREPAGECOMMITMENTEXTPROC      glTexturePageCommitmentEXT		   = NULL;
 
 #include "PFN_GLLOADER_CPP.h"
 
@@ -382,7 +383,7 @@ namespace GLLoader {
 
 	static void check_sparse_compatibility()
 	{
-		if (!found_GL_ARB_sparse_texture) {
+		if (!GLExtension::Has("GL_ARB_sparse_texture") || !GLExtension::Has("GL_EXT_direct_state_access")) {
 			found_compatible_GL_ARB_sparse_texture2 = false;
 			found_compatible_sparse_depth = false;
 
@@ -390,7 +391,7 @@ namespace GLLoader {
 		}
 
 		found_compatible_GL_ARB_sparse_texture2 = true;
-		if (!found_GL_ARB_sparse_texture2) {
+		if (!GLExtension::Has("GL_ARB_sparse_texture2")) {
 			// Only check format from GSTextureOGL
 			found_compatible_GL_ARB_sparse_texture2 &= is_sparse2_compatible("GL_R8", GL_R8, 256, 256);
 

plugins/GSdx/Renderers/OpenGL/GLLoader.h

@@ -33,6 +33,35 @@
 // FIX compilation issue with Mesa 10
 #include "glext_extra.h"
 
+/*************************************************************
+ * Extra define not provided in glcorearb.h
+ * Currently they are included in the legacy glext.h but the plan
+ * is to move to core only OpenGL
+ ************************************************************/
+
+// Extension not in core profile. It will become irrelevant with sparse texture
+#ifndef GL_TEXTURE_FREE_MEMORY_ATI
+#define GL_TEXTURE_FREE_MEMORY_ATI 0x87FC
+#endif
+#ifndef GL_NVX_gpu_memory_info
+#define GL_NVX_gpu_memory_info 1
+#define GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX 0x9047
+#define GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX 0x9048
+#define GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX 0x9049
+#define GL_GPU_MEMORY_INFO_EVICTION_COUNT_NVX 0x904A
+#define GL_GPU_MEMORY_INFO_EVICTED_MEMORY_NVX 0x904B
+#endif /* GL_NVX_gpu_memory_info */
+
+// Added in GL4.6. Code should be updated but driver support...
+#ifndef GL_TEXTURE_MAX_ANISOTROPY_EXT
+#define GL_TEXTURE_MAX_ANISOTROPY_EXT     0x84FE
+#endif
+
+// Believe me or not, they forgot to add the interaction with DSA...
+#ifndef GL_EXT_direct_state_access
+typedef void (APIENTRYP PFNGLTEXTUREPAGECOMMITMENTEXTPROC) (GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLboolean commit);
+#endif
+
 // **********************  End of the extra header ******************* //
 
 // #define ENABLE_GL_ARB_ES3_2_compatibility 1
@@ -53,7 +82,7 @@
 // #define ENABLE_GL_ARB_sample_shading 1
 // #define ENABLE_GL_ARB_shading_language_include 1
 // #define ENABLE_GL_ARB_sparse_buffer 1
-// #define ENABLE_GL_ARB_sparse_texture 1
+#define ENABLE_GL_ARB_sparse_texture 1
 // #define ENABLE_GL_ARB_texture_buffer_object 1
 // #define ENABLE_GL_KHR_blend_equation_advanced 1
 // #define ENABLE_GL_KHR_parallel_shader_compile 1
@@ -88,33 +117,10 @@
 #ifdef __unix__
 extern   PFNGLBLENDFUNCSEPARATEPROC             glBlendFuncSeparate;
 #endif
+extern   PFNGLTEXTUREPAGECOMMITMENTEXTPROC      glTexturePageCommitmentEXT;
 
 #include "PFN_GLLOADER_HPP.h"
 
-/*************************************************************
- * Extra define not provided in glcorearb.h
- * Currently they are included in the legacy glext.h but the plan
- * is to move to core only OpenGL
- ************************************************************/
-
-// Extension not in core profile. It will become irrelevant with sparse texture
-#ifndef GL_TEXTURE_FREE_MEMORY_ATI
-#define GL_TEXTURE_FREE_MEMORY_ATI 0x87FC
-#endif
-#ifndef GL_NVX_gpu_memory_info
-#define GL_NVX_gpu_memory_info 1
-#define GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX 0x9047
-#define GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX 0x9048
-#define GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX 0x9049
-#define GL_GPU_MEMORY_INFO_EVICTION_COUNT_NVX 0x904A
-#define GL_GPU_MEMORY_INFO_EVICTED_MEMORY_NVX 0x904B
-#endif /* GL_NVX_gpu_memory_info */
-
-// Added in GL4.6. Code should be updated but driver support...
-#ifndef GL_TEXTURE_MAX_ANISOTROPY_EXT
-#define GL_TEXTURE_MAX_ANISOTROPY_EXT     0x84FE
-#endif
-
 namespace GLExtension {
 	extern bool Has(const std::string& ext);
 	extern void Set(const std::string& ext, bool v = true);

plugins/GSdx/Window/GSWnd.cpp

@@ -36,6 +36,7 @@ void GSWndGL::PopulateGlFunction()
 #ifdef __unix__
 	GL_EXT_LOAD(glBlendFuncSeparate);
 #endif
+	GL_EXT_LOAD(glTexturePageCommitmentEXT);
 
 	// Check openGL requirement as soon as possible so we can switch to another
 	// renderer/device