Add sampler related ES3 APIs to command buffer.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 1455 matching lines @@
 
   // Verifies that the currently bound multisample renderbuffer is valid
   // Very slow! Only done on platforms with driver bugs that return invalid
   // buffers under memory pressure
   bool VerifyMultisampleRenderbufferIntegrity(
       GLuint renderbuffer, GLenum format);
 
   // Wrapper for glReleaseShaderCompiler.
   void DoReleaseShaderCompiler() { }
 
+  // Wrappers for glSamplerParameter*v functions.
+  void DoSamplerParameterfv(
+      GLuint sampler, GLenum pname, const GLfloat* params);
+  void DoSamplerParameteriv(GLuint sampler, GLenum pname, const GLint* params);
+
   // Wrappers for glTexParameter functions.
   void DoTexParameterf(GLenum target, GLenum pname, GLfloat param);
   void DoTexParameteri(GLenum target, GLenum pname, GLint param);
   void DoTexParameterfv(GLenum target, GLenum pname, const GLfloat* params);
   void DoTexParameteriv(GLenum target, GLenum pname, const GLint* params);
 
   // Wrappers for glUniform1i and glUniform1iv as according to the GLES2
   // spec only these 2 functions can be used to set sampler uniforms.
   void DoUniform1i(GLint fake_location, GLint v0);
   void DoUniform1iv(GLint fake_location, GLsizei count, const GLint* value);
@@ skipping 4365 matching lines @@
       if (workarounds().clear_uniforms_before_first_program_use)
         program_manager()->ClearUniforms(program);
     }
   }
 
   // LinkProgram can be very slow.  Exit command processing to allow for
   // context preemption and GPU watchdog checks.
   ExitCommandProcessingEarly();
 };
 
+void GLES2DecoderImpl::DoSamplerParameterfv(
+    GLuint sampler, GLenum pname, const GLfloat* params) {

[piman, 2015/01/09 07:10:57]

These 2 methods need to be disabled if !unsafe_es3_apis_enabled(), otherwise
they will call into NULL on an ES2 implementation, and crash the GPU process.

[Zhenyao Mo, 2015/01/09 17:45:27]

The check happens in Handle* function, which is the only place that calls the
Do* function.

+  DCHECK(params);
+  glSamplerParameterf(sampler, pname, params[0]);

[Zhenyao Mo, 2014/12/10 01:59:12]

This is use glSamplerParameterf to implement glSamplerParameterfv, because only
one param is allowed.

+}
+
+void GLES2DecoderImpl::DoSamplerParameteriv(
+    GLuint sampler, GLenum pname, const GLint* params) {
+  DCHECK(params);
+  glSamplerParameteri(sampler, pname, params[0]);

[Zhenyao Mo, 2014/12/10 01:59:12]

This is use glSamplerParameteri to implement glSamplerParameteriv, because only
one param is allowed.

+}
+
 void GLES2DecoderImpl::DoTexParameterf(
     GLenum target, GLenum pname, GLfloat param) {
   TextureRef* texture = texture_manager()->GetTextureInfoForTarget(
       &state_, target);
   if (!texture) {
     LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, "glTexParameterf", "unknown texture");
     return;
   }
 
   texture_manager()->SetParameterf(
@@ skipping 5661 matching lines @@
   }
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu