Add functions to support NV_path_rendering in OpenGL ES

src/gpu/gl/GrGLInterface.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "gl/GrGLInterface.h"
 #include "gl/GrGLExtensions.h"
@@ skipping 21 matching lines @@
     newInterface->fFunctions.fPushGroupMarker = pushGroupMarkerFn;
     newInterface->fFunctions.fPopGroupMarker = popGroupMarkerFn;
 
     return newInterface;
 }
 
 const GrGLInterface* GrGLInterfaceRemoveNVPR(const GrGLInterface* interface) {
     GrGLInterface* newInterface = GrGLInterface::NewClone(interface);
 
     newInterface->fExtensions.remove("GL_NV_path_rendering");
-
     newInterface->fFunctions.fPathCommands = NULL;
     newInterface->fFunctions.fPathCoords = NULL;
-    newInterface->fFunctions.fPathSubCommands = NULL;
-    newInterface->fFunctions.fPathSubCoords = NULL;
-    newInterface->fFunctions.fPathString = NULL;
-    newInterface->fFunctions.fPathGlyphs = NULL;
-    newInterface->fFunctions.fPathGlyphRange = NULL;
-    newInterface->fFunctions.fWeightPaths = NULL;
-    newInterface->fFunctions.fCopyPath = NULL;
-    newInterface->fFunctions.fInterpolatePaths = NULL;
-    newInterface->fFunctions.fTransformPath = NULL;
-    newInterface->fFunctions.fPathParameteriv = NULL;
     newInterface->fFunctions.fPathParameteri = NULL;
-    newInterface->fFunctions.fPathParameterfv = NULL;
     newInterface->fFunctions.fPathParameterf = NULL;
-    newInterface->fFunctions.fPathDashArray = NULL;
     newInterface->fFunctions.fGenPaths = NULL;
     newInterface->fFunctions.fDeletePaths = NULL;
-    newInterface->fFunctions.fIsPath = NULL;
     newInterface->fFunctions.fPathStencilFunc = NULL;
-    newInterface->fFunctions.fPathStencilDepthOffset = NULL;
     newInterface->fFunctions.fStencilFillPath = NULL;
     newInterface->fFunctions.fStencilStrokePath = NULL;
     newInterface->fFunctions.fStencilFillPathInstanced = NULL;
     newInterface->fFunctions.fStencilStrokePathInstanced = NULL;
-    newInterface->fFunctions.fPathCoverDepthFunc = NULL;
-    newInterface->fFunctions.fPathColorGen = NULL;
     newInterface->fFunctions.fPathTexGen = NULL;
-    newInterface->fFunctions.fPathFogGen = NULL;
     newInterface->fFunctions.fCoverFillPath = NULL;
     newInterface->fFunctions.fCoverStrokePath = NULL;
     newInterface->fFunctions.fCoverFillPathInstanced = NULL;
     newInterface->fFunctions.fCoverStrokePathInstanced = NULL;
-    newInterface->fFunctions.fGetPathParameteriv = NULL;
-    newInterface->fFunctions.fGetPathParameterfv = NULL;
-    newInterface->fFunctions.fGetPathCommands = NULL;
-    newInterface->fFunctions.fGetPathCoords = NULL;
-    newInterface->fFunctions.fGetPathDashArray = NULL;
-    newInterface->fFunctions.fGetPathMetrics = NULL;
-    newInterface->fFunctions.fGetPathMetricRange = NULL;
-    newInterface->fFunctions.fGetPathSpacing = NULL;
-    newInterface->fFunctions.fGetPathColorGeniv = NULL;
-    newInterface->fFunctions.fGetPathColorGenfv = NULL;
-    newInterface->fFunctions.fGetPathTexGeniv = NULL;
-    newInterface->fFunctions.fGetPathTexGenfv = NULL;
-    newInterface->fFunctions.fIsPointInFillPath = NULL;
-    newInterface->fFunctions.fIsPointInStrokePath = NULL;
-    newInterface->fFunctions.fGetPathLength = NULL;
-    newInterface->fFunctions.fPointAlongPath = NULL;
-
+    newInterface->fFunctions.fProgramPathFragmentInputGen = NULL;
     return newInterface;
 }
 
 GrGLInterface::GrGLInterface() {
     fStandard = kNone_GrGLStandard;
 
 #if GR_GL_PER_GL_FUNC_CALLBACK
     fCallback = GrGLDefaultInterfaceCallback;
     fCallbackData = 0;
 #endif
@@ skipping 182 matching lines @@
             if (NULL == fFunctions.fGetQueryObjecti64v ||
                 NULL == fFunctions.fGetQueryObjectui64v) {
                 RETURN_FALSE_INTERFACE
             }
         }
         if (glVer >= GR_GL_VER(3,3) || fExtensions.has("GL_ARB_timer_query")) {
             if (NULL == fFunctions.fQueryCounter) {
                 RETURN_FALSE_INTERFACE
             }
         }
-        if (fExtensions.has("GL_EXT_direct_state_access")) {
-            if (NULL == fFunctions.fMatrixLoadf ||
-                NULL == fFunctions.fMatrixLoadIdentity) {
-                RETURN_FALSE_INTERFACE
-            }
-        }
-        if (fExtensions.has("GL_NV_path_rendering")) {
-            if (NULL == fFunctions.fPathCommands ||
-                NULL == fFunctions.fPathCoords ||
-                NULL == fFunctions.fPathSubCommands ||
-                NULL == fFunctions.fPathSubCoords ||
-                NULL == fFunctions.fPathString ||
-                NULL == fFunctions.fPathGlyphs ||
-                NULL == fFunctions.fPathGlyphRange ||
-                NULL == fFunctions.fWeightPaths ||
-                NULL == fFunctions.fCopyPath ||
-                NULL == fFunctions.fInterpolatePaths ||
-                NULL == fFunctions.fTransformPath ||
-                NULL == fFunctions.fPathParameteriv ||
-                NULL == fFunctions.fPathParameteri ||
-                NULL == fFunctions.fPathParameterfv ||
-                NULL == fFunctions.fPathParameterf ||
-                NULL == fFunctions.fPathDashArray ||
-                NULL == fFunctions.fGenPaths ||
-                NULL == fFunctions.fDeletePaths ||
-                NULL == fFunctions.fIsPath ||
-                NULL == fFunctions.fPathStencilFunc ||
-                NULL == fFunctions.fPathStencilDepthOffset ||
-                NULL == fFunctions.fStencilFillPath ||
-                NULL == fFunctions.fStencilStrokePath ||
-                NULL == fFunctions.fStencilFillPathInstanced ||
-                NULL == fFunctions.fStencilStrokePathInstanced ||
-                NULL == fFunctions.fPathCoverDepthFunc ||
-                NULL == fFunctions.fPathColorGen ||
-                NULL == fFunctions.fPathTexGen ||
-                NULL == fFunctions.fPathFogGen ||
-                NULL == fFunctions.fCoverFillPath ||
-                NULL == fFunctions.fCoverStrokePath ||
-                NULL == fFunctions.fCoverFillPathInstanced ||
-                NULL == fFunctions.fCoverStrokePathInstanced ||
-                NULL == fFunctions.fGetPathParameteriv ||
-                NULL == fFunctions.fGetPathParameterfv ||
-                NULL == fFunctions.fGetPathCommands ||
-                NULL == fFunctions.fGetPathCoords ||
-                NULL == fFunctions.fGetPathDashArray ||
-                NULL == fFunctions.fGetPathMetrics ||
-                NULL == fFunctions.fGetPathMetricRange ||
-                NULL == fFunctions.fGetPathSpacing ||
-                NULL == fFunctions.fGetPathColorGeniv ||
-                NULL == fFunctions.fGetPathColorGenfv ||
-                NULL == fFunctions.fGetPathTexGeniv ||
-                NULL == fFunctions.fGetPathTexGenfv ||
-                NULL == fFunctions.fIsPointInFillPath ||
-                NULL == fFunctions.fIsPointInStrokePath ||
-                NULL == fFunctions.fGetPathLength ||
-                NULL == fFunctions.fPointAlongPath) {
-                RETURN_FALSE_INTERFACE
-            }
-        }
     }
 
     // optional function on desktop before 1.3
     if (kGL_GrGLStandard != fStandard ||
         (glVer >= GR_GL_VER(1,3)) ||
         fExtensions.has("GL_ARB_texture_compression")) {
         if (NULL == fFunctions.fCompressedTexImage2D
 #if 0
             || NULL == fFunctions.fCompressedTexSubImage2D
 #endif
@@ skipping 155 matching lines @@
 
     // These functions are added to the 3.0 version of both GLES and GL.
     if (glVer >= GR_GL_VER(3,0) ||
         (kGLES_GrGLStandard == fStandard && fExtensions.has("GL_EXT_map_buffer_range")) ||
         (kGL_GrGLStandard == fStandard && fExtensions.has("GL_ARB_map_buffer_range"))) {
         if (NULL == fFunctions.fMapBufferRange ||
             NULL == fFunctions.fFlushMappedBufferRange) {
             RETURN_FALSE_INTERFACE;
         }
     }
+
+    if ((kGL_GrGLStandard == fStandard && fExtensions.has("GL_EXT_direct_state_access")) ||
+        (kGLES_GrGLStandard == fStandard && fExtensions.has("GL_NV_path_rendering"))) {
+        if (NULL == fFunctions.fMatrixLoadf ||
+            NULL == fFunctions.fMatrixLoadIdentity) {
+            RETURN_FALSE_INTERFACE
+        }
+    }
+
+    if ((kGL_GrGLStandard == fStandard &&
+         (glVer >= GR_GL_VER(4,3) || fExtensions.has("GL_ARB_program_interface_query"))) ||
+        (kGLES_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,1))) {
+        if (NULL == fFunctions.fGetProgramResourceLocation) {
+            RETURN_FALSE_INTERFACE
+        }
+    }
+
+    if (fExtensions.has("GL_NV_path_rendering")) {
+        if (NULL == fFunctions.fPathCommands ||
+            NULL == fFunctions.fPathCoords ||
+            NULL == fFunctions.fPathParameteri ||
+            NULL == fFunctions.fPathParameterf ||
+            NULL == fFunctions.fGenPaths ||
+            NULL == fFunctions.fDeletePaths ||
+            NULL == fFunctions.fPathStencilFunc ||
+            NULL == fFunctions.fStencilFillPath ||
+            NULL == fFunctions.fStencilStrokePath ||
+            NULL == fFunctions.fStencilFillPathInstanced ||
+            NULL == fFunctions.fStencilStrokePathInstanced ||
+            NULL == fFunctions.fCoverFillPath ||
+            NULL == fFunctions.fCoverStrokePath ||
+            NULL == fFunctions.fCoverFillPathInstanced ||
+            NULL == fFunctions.fCoverStrokePathInstanced) {
+            RETURN_FALSE_INTERFACE
+        }
+        // Currently ProgramPathFragmentInputGen is not used on
+        // OpenGL, rather PathTexGen is.
+        if ((kGL_GrGLStandard == fStandard && NULL == fFunctions.fPathTexGen) ||
+            (kGLES_GrGLStandard == fStandard && NULL == fFunctions.fProgramPathFragmentInputGen)) {
+            RETURN_FALSE_INTERFACE
+        }
+    }
+
     return true;
 }