commit 6b30e457409f37c91c301cd82040e733e2930286
author commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Fri Oct 04 20:02:53 2013 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Fri Oct 04 20:02:53 2013 +0000
tree 982cd0dc44b7ac63c8f99ffa21edc7a448a3278e
parent d35736d2d23d4d2d1efa5a49b4b5b93fff09aca0

Use vertexless shaders when NVpr is available

Adds support for vertexless shaders and enables them when
NV_path_rendering is available. This takes a
GrGLFragmentOnlyShaderBuilder class, a GrGLTexGenEffectArray class,
support for setting TexGen and the projection matrix in GrGpuGL, and
code for setting the GL fixed function state where necessary.

R=bsalomon@google.com, kkinnunen@nvidia.com

Author: cdalton@nvidia.com

Review URL: https://codereview.chromium.org/25846002

git-svn-id: http://skia.googlecode.com/svn/trunk@11620 2bbb7eff-a529-9590-31e7-b0007b416f81

src/gpu/gl/GrGLShaderBuilder.cpp

diff --git a/src/gpu/gl/GrGLShaderBuilder.cpp b/src/gpu/gl/GrGLShaderBuilder.cpp
index 089ece7..00fefe1 100644
--- a/src/gpu/gl/GrGLShaderBuilder.cpp
+++ b/src/gpu/gl/GrGLShaderBuilder.cpp
@@ -441,7 +441,6 @@
     }
 }
 
-
 void GrGLShaderBuilder::fsEmitFunction(GrSLType returnType,
                                        const char* name,
                                        int argCnt,
@@ -920,3 +919,35 @@
          GL_CALL(BindAttribLocation(programId, attrib->fIndex, attrib->fName.c_str()));
     }
 }
+
+////////////////////////////////////////////////////////////////////////////////
+
+GrGLFragmentOnlyShaderBuilder::GrGLFragmentOnlyShaderBuilder(GrGpuGL* gpu,
+                                                             GrGLUniformManager& uniformManager,
+                                                             const GrGLProgramDesc& desc)
+    : INHERITED(gpu, uniformManager, desc)
+    , fNumTexCoordSets(0) {
+
+    SkASSERT(!desc.getHeader().fHasVertexCode);
+    SkASSERT(gpu->glCaps().fixedFunctionSupport());
+    SkASSERT(gpu->glCaps().pathStencilingSupport());
+    SkASSERT(GrGLProgramDesc::kAttribute_ColorInput != desc.getHeader().fColorInput);
+    SkASSERT(GrGLProgramDesc::kAttribute_ColorInput != desc.getHeader().fCoverageInput);
+}
+
+GrGLProgramEffects* GrGLFragmentOnlyShaderBuilder::createAndEmitEffects(
+        const GrEffectStage* effectStages[],
+        const EffectKey effectKeys[],
+        int effectCnt,
+        SkString* inOutFSColor,
+        GrSLConstantVec* fsInOutColorKnownValue) {
+
+    GrGLTexGenProgramEffectsBuilder texGenEffectsBuilder(this, effectCnt);
+    this->INHERITED::createAndEmitEffects(&texGenEffectsBuilder,
+                                          effectStages,
+                                          effectKeys,
+                                          effectCnt,
+                                          inOutFSColor,
+                                          fsInOutColorKnownValue);
+    return texGenEffectsBuilder.finish();
+}