command_buffer: Support instanced path rendering in gpu command buffer

Implement support for instanced path rendering in gpu command buffer.
Exposes following new functions through command buffer:
glStencilFillPathInstancedCHROMIUM
glStencilStrokePathInstancedCHROMIUM
glCoverFillPathInstancedCHROMIUM
glCoverStrokePathInstancedCHROMIUM
glStencilThenCoverFillPathInstancedCHROMIUM
glStencilThenCoverStrokePathInstancedCHROMIUM

These functions are exposed as part of the CHROMIUM_path_rendering
GL ES extension.

Converts the NV_path_rendering functions that Skia calls to these
functions, passes the calls through the command buffer and then
calls the corresponding NV_path_rendering functions.

BUG=344330

Review URL: https://codereview.chromium.org/477623004

Cr-Commit-Position: refs/heads/master@{#356526}

2 files changed, 135 insertions, 0 deletions

diff --git a/mojo/gpu/mojo_gles2_impl_autogen.cc b/mojo/gpu/mojo_gles2_impl_autogen.cc
index 30767c1..9fbe344 100644
--- a/mojo/gpu/mojo_gles2_impl_autogen.cc
+++ b/mojo/gpu/mojo_gles2_impl_autogen.cc
@@ -1789,6 +1789,88 @@ void MojoGLES2Impl::StencilThenCoverStrokePathCHROMIUM(GLuint path,
   MojoGLES2MakeCurrent(context_);
   glStencilThenCoverStrokePathCHROMIUM(path, reference, mask, coverMode);
 }
+void MojoGLES2Impl::StencilFillPathInstancedCHROMIUM(
+    GLsizei numPaths,
+    GLenum pathNameType,
+    const GLvoid* paths,
+    GLuint pathBase,
+    GLenum fillMode,
+    GLuint mask,
+    GLenum transformType,
+    const GLfloat* transformValues) {
+  MojoGLES2MakeCurrent(context_);
+  glStencilFillPathInstancedCHROMIUM(numPaths, pathNameType, paths, pathBase,
+                                     fillMode, mask, transformType,
+                                     transformValues);
+}
+void MojoGLES2Impl::StencilStrokePathInstancedCHROMIUM(
+    GLsizei numPaths,
+    GLenum pathNameType,
+    const GLvoid* paths,
+    GLuint pathBase,
+    GLint reference,
+    GLuint mask,
+    GLenum transformType,
+    const GLfloat* transformValues) {
+  MojoGLES2MakeCurrent(context_);
+  glStencilStrokePathInstancedCHROMIUM(numPaths, pathNameType, paths, pathBase,
+                                       reference, mask, transformType,
+                                       transformValues);
+}
+void MojoGLES2Impl::CoverFillPathInstancedCHROMIUM(
+    GLsizei numPaths,
+    GLenum pathNameType,
+    const GLvoid* paths,
+    GLuint pathBase,
+    GLenum coverMode,
+    GLenum transformType,
+    const GLfloat* transformValues) {
+  MojoGLES2MakeCurrent(context_);
+  glCoverFillPathInstancedCHROMIUM(numPaths, pathNameType, paths, pathBase,
+                                   coverMode, transformType, transformValues);
+}
+void MojoGLES2Impl::CoverStrokePathInstancedCHROMIUM(
+    GLsizei numPaths,
+    GLenum pathNameType,
+    const GLvoid* paths,
+    GLuint pathBase,
+    GLenum coverMode,
+    GLenum transformType,
+    const GLfloat* transformValues) {
+  MojoGLES2MakeCurrent(context_);
+  glCoverStrokePathInstancedCHROMIUM(numPaths, pathNameType, paths, pathBase,
+                                     coverMode, transformType, transformValues);
+}
+void MojoGLES2Impl::StencilThenCoverFillPathInstancedCHROMIUM(
+    GLsizei numPaths,
+    GLenum pathNameType,
+    const GLvoid* paths,
+    GLuint pathBase,
+    GLenum fillMode,
+    GLuint mask,
+    GLenum coverMode,
+    GLenum transformType,
+    const GLfloat* transformValues) {
+  MojoGLES2MakeCurrent(context_);
+  glStencilThenCoverFillPathInstancedCHROMIUM(
+      numPaths, pathNameType, paths, pathBase, fillMode, mask, coverMode,
+      transformType, transformValues);
+}
+void MojoGLES2Impl::StencilThenCoverStrokePathInstancedCHROMIUM(
+    GLsizei numPaths,
+    GLenum pathNameType,
+    const GLvoid* paths,
+    GLuint pathBase,
+    GLint reference,
+    GLuint mask,
+    GLenum coverMode,
+    GLenum transformType,
+    const GLfloat* transformValues) {
+  MojoGLES2MakeCurrent(context_);
+  glStencilThenCoverStrokePathInstancedCHROMIUM(
+      numPaths, pathNameType, paths, pathBase, reference, mask, coverMode,
+      transformType, transformValues);
+}
 GLenum MojoGLES2Impl::GetGraphicsResetStatusKHR() {
   MojoGLES2MakeCurrent(context_);
   return glGetGraphicsResetStatusKHR();
diff --git a/mojo/gpu/mojo_gles2_impl_autogen.h b/mojo/gpu/mojo_gles2_impl_autogen.h
index 457054a..184766b 100644
--- a/mojo/gpu/mojo_gles2_impl_autogen.h
+++ b/mojo/gpu/mojo_gles2_impl_autogen.h
@@ -817,6 +817,59 @@ class MojoGLES2Impl : public gpu::gles2::GLES2Interface {
                                           GLint reference,
                                           GLuint mask,
                                           GLenum coverMode) override;
+  void StencilFillPathInstancedCHROMIUM(
+      GLsizei numPaths,
+      GLenum pathNameType,
+      const GLvoid* paths,
+      GLuint pathBase,
+      GLenum fillMode,
+      GLuint mask,
+      GLenum transformType,
+      const GLfloat* transformValues) override;
+  void StencilStrokePathInstancedCHROMIUM(
+      GLsizei numPaths,
+      GLenum pathNameType,
+      const GLvoid* paths,
+      GLuint pathBase,
+      GLint reference,
+      GLuint mask,
+      GLenum transformType,
+      const GLfloat* transformValues) override;
+  void CoverFillPathInstancedCHROMIUM(GLsizei numPaths,
+                                      GLenum pathNameType,
+                                      const GLvoid* paths,
+                                      GLuint pathBase,
+                                      GLenum coverMode,
+                                      GLenum transformType,
+                                      const GLfloat* transformValues) override;
+  void CoverStrokePathInstancedCHROMIUM(
+      GLsizei numPaths,
+      GLenum pathNameType,
+      const GLvoid* paths,
+      GLuint pathBase,
+      GLenum coverMode,
+      GLenum transformType,
+      const GLfloat* transformValues) override;
+  void StencilThenCoverFillPathInstancedCHROMIUM(
+      GLsizei numPaths,
+      GLenum pathNameType,
+      const GLvoid* paths,
+      GLuint pathBase,
+      GLenum fillMode,
+      GLuint mask,
+      GLenum coverMode,
+      GLenum transformType,
+      const GLfloat* transformValues) override;
+  void StencilThenCoverStrokePathInstancedCHROMIUM(
+      GLsizei numPaths,
+      GLenum pathNameType,
+      const GLvoid* paths,
+      GLuint pathBase,
+      GLint reference,
+      GLuint mask,
+      GLenum coverMode,
+      GLenum transformType,
+      const GLfloat* transformValues) override;
   GLenum GetGraphicsResetStatusKHR() override;
   void BlendBarrierKHR() override;
   void ApplyScreenSpaceAntialiasingCHROMIUM() override;