Reland "Add glGetFloatv and glSamplerParameterf to GrGLInterface."

This is a reland of commit 171450a1a0

Original change's description:
> Add glGetFloatv and glSamplerParameterf to GrGLInterface.
>
>
> Bug: skia:13036
> Change-Id: Ie15e0c2b0ada468b82bced818eec67c32d70126b
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/522100
> Auto-Submit: Brian Salomon <bsalomon@google.com>
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>

Bug: skia:13036
Change-Id: Id594ea5fd68c76703ff61d8414c203facbf28801
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/522359
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

RELEASE_NOTES.txt

@@ -2,11 +2,19 @@ Skia Graphics Release Notes
 
 This file includes a list of high level updates for each milestone release.
 
+Milestone 102
+-------------
+  * Add glGetFloatv and glSamplerParameterf to GrGLInterface.
+
+* * *
+
 Milestone 101
 -------------
   * Add maxSurfaceSampleCountForColorType(SkColorType ct) in GrContextThreadSafeProxy
   * Enums SkAlphaType and SkColorType are broken out into their own header files in include/core/
 
+* * *
+
 Milestone 100
 -------------
   * Skia now requires C++17 and the corresponding standard library (or newer).

include/gpu/gl/GrGLFunctions.h

@@ -96,6 +96,7 @@ using GrGLGenVertexArraysFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLsizei n, GrGLuint
 using GrGLGetBufferParameterivFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLenum target, GrGLenum pname, GrGLint* params);
 using GrGLGetErrorFn = GrGLenum GR_GL_FUNCTION_TYPE();
 using GrGLGetFramebufferAttachmentParameterivFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLenum target, GrGLenum attachment, GrGLenum pname, GrGLint* params);
+using GrGLGetFloatvFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLenum pname, GrGLfloat* params);
 using GrGLGetIntegervFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLenum pname, GrGLint* params);
 using GrGLGetMultisamplefvFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLenum pname, GrGLuint index, GrGLfloat* val);
 using GrGLGetProgramBinaryFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLuint program, GrGLsizei bufsize, GrGLsizei* length, GrGLenum* binaryFormat, void* binary);
@@ -142,7 +143,8 @@ using GrGLReadPixelsFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLint x, GrGLint y, GrGL
 using GrGLRenderbufferStorageFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLenum target, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
 using GrGLRenderbufferStorageMultisampleFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLenum target, GrGLsizei samples, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
 using GrGLResolveMultisampleFramebufferFn = GrGLvoid GR_GL_FUNCTION_TYPE();
-using GrGLSamplerParameteriFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLuint sampler, GrGLenum pname, GrGLint params);
+using GrGLSamplerParameterfFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLuint sampler, GrGLenum pname, GrGLfloat param);
+using GrGLSamplerParameteriFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLuint sampler, GrGLenum pname, GrGLint param);
 using GrGLSamplerParameterivFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLuint sampler, GrGLenum pname, const GrGLint* params);
 using GrGLScissorFn = GrGLvoid GR_GL_FUNCTION_TYPE(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
 // GL_CHROMIUM_bind_uniform_location

include/gpu/gl/GrGLInterface.h

@@ -170,6 +170,7 @@ public:
         GrGLFunction<GrGLGetBufferParameterivFn> fGetBufferParameteriv;
         GrGLFunction<GrGLGetErrorFn> fGetError;
         GrGLFunction<GrGLGetFramebufferAttachmentParameterivFn> fGetFramebufferAttachmentParameteriv;
+        GrGLFunction<GrGLGetFloatvFn> fGetFloatv;
         GrGLFunction<GrGLGetIntegervFn> fGetIntegerv;
         GrGLFunction<GrGLGetMultisamplefvFn> fGetMultisamplefv;
         GrGLFunction<GrGLGetProgramBinaryFn> fGetProgramBinary;
@@ -248,6 +249,7 @@ public:
         GrGLFunction<GrGLBindUniformLocationFn> fBindUniformLocation;
 
         GrGLFunction<GrGLResolveMultisampleFramebufferFn> fResolveMultisampleFramebuffer;
+        GrGLFunction<GrGLSamplerParameterfFn> fSamplerParameterf;
         GrGLFunction<GrGLSamplerParameteriFn> fSamplerParameteri;
         GrGLFunction<GrGLSamplerParameterivFn> fSamplerParameteriv;
         GrGLFunction<GrGLScissorFn> fScissor;

src/gpu/gl/GrGLAssembleGLESInterfaceAutogen.cpp

@@ -91,6 +91,7 @@ sk_sp<const GrGLInterface> GrGLMakeAssembledGLESInterface(void *ctx, GrGLGetProc
     GET_PROC(GenTextures);
     GET_PROC(GetBufferParameteriv);
     GET_PROC(GetError);
+    GET_PROC(GetFloatv);
     GET_PROC(GetIntegerv);
     GET_PROC(GetProgramInfoLog);
     GET_PROC(GetProgramiv);
@@ -425,6 +426,7 @@ sk_sp<const GrGLInterface> GrGLMakeAssembledGLESInterface(void *ctx, GrGLGetProc
         GET_PROC(BindSampler);
         GET_PROC(DeleteSamplers);
         GET_PROC(GenSamplers);
+        GET_PROC(SamplerParameterf);
         GET_PROC(SamplerParameteri);
         GET_PROC(SamplerParameteriv);
     }

src/gpu/gl/GrGLAssembleGLInterfaceAutogen.cpp

@@ -94,6 +94,7 @@ sk_sp<const GrGLInterface> GrGLMakeAssembledGLInterface(void *ctx, GrGLGetProc g
     GET_PROC(GenTextures);
     GET_PROC(GetBufferParameteriv);
     GET_PROC(GetError);
+    GET_PROC(GetFloatv);
     GET_PROC(GetIntegerv);
     GET_PROC(GetProgramInfoLog);
     GET_PROC(GetProgramiv);
@@ -421,12 +422,14 @@ sk_sp<const GrGLInterface> GrGLMakeAssembledGLInterface(void *ctx, GrGLGetProc g
         GET_PROC(BindSampler);
         GET_PROC(DeleteSamplers);
         GET_PROC(GenSamplers);
+        GET_PROC(SamplerParameterf);
         GET_PROC(SamplerParameteri);
         GET_PROC(SamplerParameteriv);
     } else if (extensions.has("GL_ARB_sampler_objects")) {
         GET_PROC(BindSampler);
         GET_PROC(DeleteSamplers);
         GET_PROC(GenSamplers);
+        GET_PROC(SamplerParameterf);
         GET_PROC(SamplerParameteri);
         GET_PROC(SamplerParameteriv);
     }

src/gpu/gl/GrGLAssembleWebGLInterfaceAutogen.cpp

@@ -98,6 +98,7 @@ sk_sp<const GrGLInterface> GrGLMakeAssembledWebGLInterface(void *ctx, GrGLGetPro
     GET_PROC(GenTextures);
     GET_PROC(GetBufferParameteriv);
     GET_PROC(GetError);
+    GET_PROC(GetFloatv);
     GET_PROC(GetIntegerv);
     GET_PROC(GetProgramInfoLog);
     GET_PROC(GetProgramiv);
@@ -239,6 +240,7 @@ sk_sp<const GrGLInterface> GrGLMakeAssembledWebGLInterface(void *ctx, GrGLGetPro
         GET_PROC(BindSampler);
         GET_PROC(DeleteSamplers);
         GET_PROC(GenSamplers);
+        GET_PROC(SamplerParameterf);
         GET_PROC(SamplerParameteri);
         GET_PROC(SamplerParameteriv);
     }

tools/gpu/gl/interface/interface.json5

@@ -32,7 +32,7 @@
       "EnableVertexAttribArray", "Finish", "Flush",
       "FrontFace", "GenBuffers",
       "GenTextures", "GetBufferParameteriv", "GetError",
-      "GetIntegerv", "GetProgramInfoLog",
+      "GetFloatv", "GetIntegerv", "GetProgramInfoLog",
       "GetProgramiv", "GetShaderInfoLog",
       "GetShaderiv", "GetString",
       "GetUniformLocation", "IsTexture", "LineWidth", "LinkProgram", "PixelStorei",
@@ -46,6 +46,11 @@
       "VertexAttrib2fv", "VertexAttrib3fv", "VertexAttrib4fv", "VertexAttribPointer",
       "Viewport",
     ],
+
+    // TODO: Remove 'optional' once Chrome sets this function in the interface.
+    "optional": [
+      "GetFloatv",
+    ]
   },
   { // GL exclusive core functions
     "GL":    [{"ext": "<core>"}],
@@ -610,8 +615,11 @@
 
     "functions": [
       "BindSampler", "DeleteSamplers", "GenSamplers",
-      "SamplerParameteri", "SamplerParameteriv",
+      "SamplerParameterf", "SamplerParameteri", "SamplerParameteriv",
     ],
+
+    // TODO: Remove 'optional' once Chrome sets this function in the interface.
+    "optional": ["SamplerParameterf"]
   },
 
   {