Use all available texture units.

src/gpu/gl/GrGLCaps.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLCaps.h"
 #include "GrGLContext.h"
@@ skipping 10 matching lines @@
     INHERITED::reset();
 
     fVerifiedColorConfigs.reset();
     fStencilFormats.reset();
     fStencilVerifiedColorConfigs.reset();
     fMSFBOType = kNone_MSFBOType;
     fCoverageAAType = kNone_CoverageAAType;
     fFBFetchType = kNone_FBFetchType;
     fMaxFragmentUniformVectors = 0;
     fMaxVertexAttributes = 0;
+    fMaxFragmentTextureUnits = 0;
     fRGBA8RenderbufferSupport = false;
     fBGRAFormatSupport = false;
     fBGRAIsInternalFormat = false;
     fTextureSwizzleSupport = false;
     fUnpackRowLengthSupport = false;
     fUnpackFlipYSupport = false;
     fPackRowLengthSupport = false;
     fPackFlipYSupport = false;
     fTextureUsageSupport = false;
     fTexStorageSupport = false;
@@ skipping 11 matching lines @@
     *this = caps;
 }
 
 GrGLCaps& GrGLCaps::operator = (const GrGLCaps& caps) {
     INHERITED::operator=(caps);
     fVerifiedColorConfigs = caps.fVerifiedColorConfigs;
     fStencilFormats = caps.fStencilFormats;
     fStencilVerifiedColorConfigs = caps.fStencilVerifiedColorConfigs;
     fMaxFragmentUniformVectors = caps.fMaxFragmentUniformVectors;
     fMaxVertexAttributes = caps.fMaxVertexAttributes;
+    fMaxFragmentTextureUnits = caps.fMaxFragmentTextureUnits;
     fMSFBOType = caps.fMSFBOType;
     fCoverageAAType = caps.fCoverageAAType;
     fMSAACoverageModes = caps.fMSAACoverageModes;
     fFBFetchType = caps.fFBFetchType;
     fRGBA8RenderbufferSupport = caps.fRGBA8RenderbufferSupport;
     fBGRAFormatSupport = caps.fBGRAFormatSupport;
     fBGRAIsInternalFormat = caps.fBGRAIsInternalFormat;
     fTextureSwizzleSupport = caps.fTextureSwizzleSupport;
     fUnpackRowLengthSupport = caps.fUnpackRowLengthSupport;
     fUnpackFlipYSupport = caps.fUnpackFlipYSupport;
@@ skipping 30 matching lines @@
     if (kES2_GrGLBinding == binding) {
         GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS,
                           &fMaxFragmentUniformVectors);
     } else {
         GrAssert(kDesktop_GrGLBinding == binding);
         GrGLint max;
         GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max);
         fMaxFragmentUniformVectors = max / 4;
     }
     GR_GL_GetIntegerv(gli, GR_GL_MAX_VERTEX_ATTRIBS, &fMaxVertexAttributes);
+    GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_IMAGE_UNITS, &fMaxFragmentTextureUnits);
 
     if (kDesktop_GrGLBinding == binding) {
         fRGBA8RenderbufferSupport = true;
     } else {
         fRGBA8RenderbufferSupport = ctxInfo.hasExtension("GL_OES_rgb8_rgba8") ||
                                     ctxInfo.hasExtension("GL_ARM_rgba8");
     }
 
     if (kDesktop_GrGLBinding == binding) {
         fBGRAFormatSupport = version >= GR_GL_VER(1,2) ||
@@ skipping 93 matching lines @@
             fFBFetchType = kNV_FBFetchType;
         }
     }
 
     this->initFSAASupport(ctxInfo, gli);
     this->initStencilFormats(ctxInfo);
 
     /**************************************************************************
      * GrDrawTargetCaps fields
      **************************************************************************/
-    GrGLint maxTextureUnits;
-    // check FS and fixed-function texture unit limits
-    // we only use textures in the fragment stage currently.
-    // checks are > to make sure we have a spare unit.
-    GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
-
     GrGLint numFormats;
     GR_GL_GetIntegerv(gli, GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numFormats);
     if (numFormats) {
         SkAutoSTMalloc<10, GrGLint> formats(numFormats);
         GR_GL_GetIntegerv(gli, GR_GL_COMPRESSED_TEXTURE_FORMATS, formats);
         for (int i = 0; i < numFormats; ++i) {
             if (formats[i] == GR_GL_PALETTE8_RGBA8) {
                 f8BitPaletteSupport = true;
                 break;
             }
@@ skipping 337 matching lines @@
     GrPrintf("GL_ARB_imaging support: %s\n", (fImagingSupport ? "YES": "NO"));
     GrPrintf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO"));
     GrPrintf("Fragment coord conventions support: %s\n",
              (fFragCoordsConventionSupport ? "YES": "NO"));
     GrPrintf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO"));
     GrPrintf("Use non-VBO for dynamic data: %s\n",
              (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO"));
     GrPrintf("Core Profile: %s\n", (fIsCoreProfile ? "YES" : "NO"));
     GrPrintf("Discard FrameBuffer support: %s\n", (fDiscardFBSupport ? "YES" : "NO"));
 }