Reland image storage with fixes.

Revert "Revert "Initial OpenGL Image support.""

This reverts commit 59dc41175d99d0a31c046aec0c26c4d82a3a3574.

BUG=skia:

Change-Id: Ibe3c87ce7f746f065fdbcc5a518388cc291112f5
Reviewed-on: https://skia-review.googlesource.com/5131
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 15 insertions, 3 deletions

diff --git a/src/gpu/glsl/GrGLSLFragmentProcessor.h b/src/gpu/glsl/GrGLSLFragmentProcessor.h
index aba68b7e05..c8154231b5 100644
--- a/src/gpu/glsl/GrGLSLFragmentProcessor.h
+++ b/src/gpu/glsl/GrGLSLFragmentProcessor.h
@@ -11,13 +11,13 @@
 #include "GrFragmentProcessor.h"
 #include "GrShaderVar.h"
 #include "glsl/GrGLSLProgramDataManager.h"
+#include "glsl/GrGLSLUniformHandler.h"
 
 class GrProcessor;
 class GrProcessorKeyBuilder;
 class GrGLSLCaps;
 class GrGLSLFPBuilder;
 class GrGLSLFPFragmentBuilder;
-class GrGLSLUniformHandler;
 
 class GrGLSLFragmentProcessor {
 public:
@@ -29,8 +29,9 @@ public:
         }
     }
 
-    typedef GrGLSLProgramDataManager::UniformHandle UniformHandle;
-    typedef GrGLSLProgramDataManager::UniformHandle SamplerHandle;
+    using UniformHandle      = GrGLSLUniformHandler::UniformHandle;
+    using SamplerHandle      = GrGLSLUniformHandler::SamplerHandle;
+    using ImageStorageHandle = GrGLSLUniformHandler::ImageStorageHandle;
 
 private:
     /**
@@ -74,6 +75,8 @@ public:
                                                  &GrProcessor::numTextureSamplers>;
     using BufferSamplers = BuilderInputProvider<SamplerHandle, GrProcessor,
                                                 &GrProcessor::numBuffers>;
+    using ImageStorages = BuilderInputProvider<ImageStorageHandle, GrProcessor,
+                                               &GrProcessor::numImageStorages>;
 
     /** Called when the program stage should insert its code into the shaders. The code in each
         shader will be in its own block ({}) and so locally scoped names will not collide across
@@ -99,6 +102,12 @@ public:
         @param bufferSamplers    Contains one entry for each BufferAccess of the GrProcessor. These
                                  can be passed to the builder to emit buffer reads in the generated
                                  code.
+        @param imageStorages     Contains one entry for each ImageStorageAccess of the GrProcessor.
+                                 These can be passed to the builder to emit image loads and stores
+                                 in the generated code.
+        @param gpImplementsDistanceVector
+                                 Does the GrGeometryProcessor implement the feature where it
+                                 provides a vector to the nearest edge of the shape being rendered.
      */
     struct EmitArgs {
         EmitArgs(GrGLSLFPFragmentBuilder* fragBuilder,
@@ -110,6 +119,7 @@ public:
                  const TransformedCoordVars& transformedCoordVars,
                  const TextureSamplers& textureSamplers,
                  const BufferSamplers& bufferSamplers,
+                 const ImageStorages& imageStorages,
                  bool gpImplementsDistanceVector)
             : fFragBuilder(fragBuilder)
             , fUniformHandler(uniformHandler)
@@ -120,6 +130,7 @@ public:
             , fTransformedCoords(transformedCoordVars)
             , fTexSamplers(textureSamplers)
             , fBufferSamplers(bufferSamplers)
+            , fImageStorages(imageStorages)
             , fGpImplementsDistanceVector(gpImplementsDistanceVector) {}
         GrGLSLFPFragmentBuilder* fFragBuilder;
         GrGLSLUniformHandler* fUniformHandler;
@@ -130,6 +141,7 @@ public:
         const TransformedCoordVars& fTransformedCoords;
         const TextureSamplers& fTexSamplers;
         const BufferSamplers& fBufferSamplers;
+        const ImageStorages& fImageStorages;
         bool fGpImplementsDistanceVector;
     };