Improve GLSL integer support

 - Adds shader types for uint.
 - Adds a cap for integer support.
 - Uses glVertexAttribIPointer for integer attribs.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1669853002

Committed: https://skia.googlesource.com/skia/+/3a2caf8ecf38124f4ad21a0f6c4dabfcfa17911a

Review URL: https://codereview.chromium.org/1669853002

1 files changed, 8 insertions, 41 deletions

diff --git a/src/gpu/gl/GrGLVertexArray.h b/src/gpu/gl/GrGLVertexArray.h
index 0a5dea6a1e..f5a97672f3 100644
--- a/src/gpu/gl/GrGLVertexArray.h
+++ b/src/gpu/gl/GrGLVertexArray.h
@@ -17,35 +17,6 @@ class GrGLVertexBuffer;
 class GrGLIndexBuffer;
 class GrGLGpu;
 
-struct GrGLAttribLayout {
-    GrGLint     fCount;
-    GrGLenum    fType;
-    GrGLboolean fNormalized;
-};
-
-static inline const GrGLAttribLayout& GrGLAttribTypeToLayout(GrVertexAttribType type) {
-    static const GrGLAttribLayout kLayouts[kGrVertexAttribTypeCount] = {
-        {1, GR_GL_FLOAT, false},         // kFloat_GrVertexAttribType
-        {2, GR_GL_FLOAT, false},         // kVec2f_GrVertexAttribType
-        {3, GR_GL_FLOAT, false},         // kVec3f_GrVertexAttribType
-        {4, GR_GL_FLOAT, false},         // kVec4f_GrVertexAttribType
-        {1, GR_GL_UNSIGNED_BYTE, true},  // kUByte_GrVertexAttribType
-        {4, GR_GL_UNSIGNED_BYTE, true},  // kVec4ub_GrVertexAttribType
-        {2, GR_GL_SHORT, false},         // kVec2s_GrVertexAttribType
-        {4, GR_GL_INT, false},           // kInt_GrVertexAttribType
-    };
-    GR_STATIC_ASSERT(0 == kFloat_GrVertexAttribType);
-    GR_STATIC_ASSERT(1 == kVec2f_GrVertexAttribType);
-    GR_STATIC_ASSERT(2 == kVec3f_GrVertexAttribType);
-    GR_STATIC_ASSERT(3 == kVec4f_GrVertexAttribType);
-    GR_STATIC_ASSERT(4 == kUByte_GrVertexAttribType);
-    GR_STATIC_ASSERT(5 == kVec4ub_GrVertexAttribType);
-    GR_STATIC_ASSERT(6 == kVec2s_GrVertexAttribType);
-    GR_STATIC_ASSERT(7 == kInt_GrVertexAttribType);
-    GR_STATIC_ASSERT(SK_ARRAY_COUNT(kLayouts) == kGrVertexAttribTypeCount);
-    return kLayouts[type];
-}
-
 /**
  * This sets and tracks the vertex attribute array state. It is used internally by GrGLVertexArray
  * (below) but is separate because it is also used to track the state of vertex array object 0.
@@ -71,9 +42,7 @@ public:
     void set(GrGLGpu*,
              int attribIndex,
              GrGLuint vertexBufferID,
-             GrGLint size,
-             GrGLenum type,
-             GrGLboolean normalized,
+             GrVertexAttribType type,
              GrGLsizei stride,
              GrGLvoid* offset);
 
@@ -115,15 +84,13 @@ private:
                 fAttribPointerIsValid = false;
             }
 
-            bool        fEnableIsValid;
-            bool        fAttribPointerIsValid;
-            bool        fEnabled;
-            GrGLuint    fVertexBufferID;
-            GrGLint     fSize;
-            GrGLenum    fType;
-            GrGLboolean fNormalized;
-            GrGLsizei   fStride;
-            GrGLvoid*   fOffset;
+            bool                  fEnableIsValid;
+            bool                  fAttribPointerIsValid;
+            bool                  fEnabled;
+            GrGLuint              fVertexBufferID;
+            GrVertexAttribType    fType;
+            GrGLsizei             fStride;
+            GrGLvoid*             fOffset;
     };
 
     SkSTArray<16, AttribArrayState, true> fAttribArrayStates;