Add Pepper support for several GL extensions

Add support to the command buffer code generator to generate multiple pepper interfaces, and use that to generate interfaces for ANGLE_instanced_arrays, ANGLE_framebuffer_blit, ANGLE_framebuffer_multisample, CHROMIUM_enable_feature, and CHROMIUM_map_sub.

BUG=93148
TEST=

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=123696

Review URL: https://chromiumcodereview.appspot.com/9420017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@123702 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 162 insertions, 3 deletions

diff --git a/ppapi/lib/gl/gles2/gl2ext_ppapi.c b/ppapi/lib/gl/gles2/gl2ext_ppapi.c
index 62d842d..6bdc09d 100644
--- a/ppapi/lib/gl/gles2/gl2ext_ppapi.c
+++ b/ppapi/lib/gl/gles2/gl2ext_ppapi.c
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -26,6 +26,16 @@
 // TODO(alokp): This will need to be thread-safe if we build gles2 as a
 // shared library.
 static const struct PPB_OpenGLES2* g_gles2_interface = NULL;
+static const struct PPB_OpenGLES2InstancedArrays_Dev*
+    g_gles2_instanced_arrays_interface = NULL;
+static const struct PPB_OpenGLES2FramebufferBlit_Dev*
+    g_gles2_framebuffer_blit_interface = NULL;
+static const struct PPB_OpenGLES2FramebufferMultisample_Dev*
+    g_gles2_framebuffer_multisample_interface = NULL;
+static const struct PPB_OpenGLES2ChromiumEnableFeature_Dev*
+    g_gles2_chromium_enable_feature_interface = NULL;
+static const struct PPB_OpenGLES2ChromiumMapSub_Dev*
+    g_gles2_chromium_map_sub_interface = NULL;
 
 // TODO(alokp): Make sure PP_TLS works on all supported platforms.
 static PP_TLS PP_Resource g_current_context = 0;
@@ -35,6 +45,28 @@ GLboolean GL_APIENTRY glInitializePPAPI(
   if (!g_gles2_interface) {
     g_gles2_interface = get_browser_interface(PPB_OPENGLES2_INTERFACE);
   }
+  if (!g_gles2_instanced_arrays_interface) {
+    g_gles2_instanced_arrays_interface =
+        get_browser_interface(PPB_OPENGLES2_INSTANCEDARRAYS_DEV_INTERFACE);
+  }
+  if (!g_gles2_framebuffer_blit_interface) {
+    g_gles2_framebuffer_blit_interface =
+        get_browser_interface(PPB_OPENGLES2_FRAMEBUFFERBLIT_DEV_INTERFACE);
+  }
+  if (!g_gles2_framebuffer_multisample_interface) {
+    g_gles2_framebuffer_multisample_interface =
+        get_browser_interface(
+            PPB_OPENGLES2_FRAMEBUFFERMULTISAMPLE_DEV_INTERFACE);
+  }
+  if (!g_gles2_chromium_enable_feature_interface) {
+    g_gles2_chromium_enable_feature_interface =
+        get_browser_interface(
+            PPB_OPENGLES2_CHROMIUMENABLEFEATURE_DEV_INTERFACE);
+  }
+  if (!g_gles2_chromium_map_sub_interface) {
+    g_gles2_chromium_map_sub_interface =
+        get_browser_interface(PPB_OPENGLES2_CHROMIUMMAPSUB_DEV_INTERFACE);
+  }
   return g_gles2_interface ? GL_TRUE : GL_FALSE;
 }
 
@@ -55,3 +87,27 @@ const struct PPB_OpenGLES2* GL_APIENTRY glGetInterfacePPAPI() {
   return g_gles2_interface;
 }
 
+const struct PPB_OpenGLES2InstancedArrays_Dev* GL_APIENTRY
+    glGetInstancedArraysInterfacePPAPI() {
+  return g_gles2_instanced_arrays_interface;
+}
+
+const struct PPB_OpenGLES2FramebufferBlit_Dev* GL_APIENTRY
+    glGetFramebufferBlitInterfacePPAPI() {
+  return g_gles2_framebuffer_blit_interface;
+}
+
+const struct PPB_OpenGLES2FramebufferMultisample_Dev* GL_APIENTRY
+    glGetFramebufferMultisampleInterfacePPAPI() {
+  return g_gles2_framebuffer_multisample_interface;
+}
+
+const struct PPB_OpenGLES2ChromiumEnableFeature_Dev* GL_APIENTRY
+    glGetChromiumEnableFeatureInterfacePPAPI() {
+  return g_gles2_chromium_enable_feature_interface;
+}
+
+const struct PPB_OpenGLES2ChromiumMapSub_Dev* GL_APIENTRY
+    glGetChromiumMapSubInterfacePPAPI() {
+  return g_gles2_chromium_map_sub_interface;
+}
diff --git a/ppapi/lib/gl/gles2/gl2ext_ppapi.h b/ppapi/lib/gl/gles2/gl2ext_ppapi.h
index fcfabd8..d33814e 100644
--- a/ppapi/lib/gl/gles2/gl2ext_ppapi.h
+++ b/ppapi/lib/gl/gles2/gl2ext_ppapi.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -12,6 +12,7 @@
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/ppb.h"
 #include "ppapi/c/ppb_opengles2.h"
+#include "ppapi/c/dev/ppb_opengles2ext_dev.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -36,6 +37,16 @@ GL_APICALL PP_Resource GL_APIENTRY glGetCurrentContextPPAPI();
 
 // Returns OpenGL ES 2.0 interface.
 GL_APICALL const struct PPB_OpenGLES2* GL_APIENTRY glGetInterfacePPAPI();
+GL_APICALL const struct PPB_OpenGLES2InstancedArrays_Dev* GL_APIENTRY
+    glGetInstancedArraysInterfacePPAPI();
+GL_APICALL const struct PPB_OpenGLES2FramebufferBlit_Dev* GL_APIENTRY
+    glGetFramebufferBlitInterfacePPAPI();
+GL_APICALL const struct PPB_OpenGLES2FramebufferMultisample_Dev* GL_APIENTRY
+    glGetFramebufferMultisampleInterfacePPAPI();
+GL_APICALL const struct PPB_OpenGLES2ChromiumEnableFeature_Dev* GL_APIENTRY
+    glGetChromiumEnableFeatureInterfacePPAPI();
+GL_APICALL const struct PPB_OpenGLES2ChromiumMapSub_Dev* GL_APIENTRY
+    glGetChromiumMapSubInterfacePPAPI();
 
 #ifdef __cplusplus
 }
diff --git a/ppapi/lib/gl/gles2/gles2.c b/ppapi/lib/gl/gles2/gles2.c
index 8dba474..f0ae66f 100644
--- a/ppapi/lib/gl/gles2/gles2.c
+++ b/ppapi/lib/gl/gles2/gles2.c
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -753,3 +753,95 @@ void GL_APIENTRY glViewport(GLint x, GLint y, GLsizei width, GLsizei height) {
       glGetCurrentContextPPAPI(), x, y, width, height);
 }
 
+void GL_APIENTRY glBlitFramebufferEXT(
+    GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0,
+    GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter) {
+  const struct PPB_OpenGLES2FramebufferBlit_Dev* ext =
+      glGetFramebufferBlitInterfacePPAPI();
+  if (ext)
+    ext->BlitFramebufferEXT(
+        glGetCurrentContextPPAPI(), srcX0, srcY0, srcX1, srcY1, dstX0, dstY0,
+        dstX1, dstY1, mask, filter);
+}
+
+void GL_APIENTRY glRenderbufferStorageMultisampleEXT(
+    GLenum target, GLsizei samples, GLenum internalformat, GLsizei width,
+    GLsizei height) {
+  const struct PPB_OpenGLES2FramebufferMultisample_Dev* ext =
+      glGetFramebufferMultisampleInterfacePPAPI();
+  if (ext)
+    ext->RenderbufferStorageMultisampleEXT(
+        glGetCurrentContextPPAPI(), target, samples, internalformat, width,
+        height);
+}
+
+GLboolean GL_APIENTRY glEnableFeatureCHROMIUM(const char* feature) {
+  const struct PPB_OpenGLES2ChromiumEnableFeature_Dev* ext =
+      glGetChromiumEnableFeatureInterfacePPAPI();
+  if (ext)
+    return ext->EnableFeatureCHROMIUM(glGetCurrentContextPPAPI(), feature);
+  return 0;
+}
+
+void* GL_APIENTRY glMapBufferSubDataCHROMIUM(
+    GLuint target, GLintptr offset, GLsizeiptr size, GLenum access) {
+  const struct PPB_OpenGLES2ChromiumMapSub_Dev* ext =
+      glGetChromiumMapSubInterfacePPAPI();
+  if (ext)
+    return ext->MapBufferSubDataCHROMIUM(
+        glGetCurrentContextPPAPI(), target, offset, size, access);
+  return 0;
+}
+
+void GL_APIENTRY glUnmapBufferSubDataCHROMIUM(const void* mem) {
+  const struct PPB_OpenGLES2ChromiumMapSub_Dev* ext =
+      glGetChromiumMapSubInterfacePPAPI();
+  if (ext)
+    ext->UnmapBufferSubDataCHROMIUM(glGetCurrentContextPPAPI(), mem);
+}
+
+void* GL_APIENTRY glMapTexSubImage2DCHROMIUM(
+    GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width,
+    GLsizei height, GLenum format, GLenum type, GLenum access) {
+  const struct PPB_OpenGLES2ChromiumMapSub_Dev* ext =
+      glGetChromiumMapSubInterfacePPAPI();
+  if (ext)
+    return ext->MapTexSubImage2DCHROMIUM(
+        glGetCurrentContextPPAPI(), target, level, xoffset, yoffset, width,
+        height, format, type, access);
+  return 0;
+}
+
+void GL_APIENTRY glUnmapTexSubImage2DCHROMIUM(const void* mem) {
+  const struct PPB_OpenGLES2ChromiumMapSub_Dev* ext =
+      glGetChromiumMapSubInterfacePPAPI();
+  if (ext)
+    ext->UnmapTexSubImage2DCHROMIUM(glGetCurrentContextPPAPI(), mem);
+}
+
+void GL_APIENTRY glDrawArraysInstancedANGLE(
+    GLenum mode, GLint first, GLsizei count, GLsizei primcount) {
+  const struct PPB_OpenGLES2InstancedArrays_Dev* ext =
+      glGetInstancedArraysInterfacePPAPI();
+  if (ext)
+    ext->DrawArraysInstancedANGLE(
+        glGetCurrentContextPPAPI(), mode, first, count, primcount);
+}
+
+void GL_APIENTRY glDrawElementsInstancedANGLE(
+    GLenum mode, GLsizei count, GLenum type, const void* indices,
+    GLsizei primcount) {
+  const struct PPB_OpenGLES2InstancedArrays_Dev* ext =
+      glGetInstancedArraysInterfacePPAPI();
+  if (ext)
+    ext->DrawElementsInstancedANGLE(
+        glGetCurrentContextPPAPI(), mode, count, type, indices, primcount);
+}
+
+void GL_APIENTRY glVertexAttribDivisorANGLE(GLuint index, GLuint divisor) {
+  const struct PPB_OpenGLES2InstancedArrays_Dev* ext =
+      glGetInstancedArraysInterfacePPAPI();
+  if (ext)
+    ext->VertexAttribDivisorANGLE(glGetCurrentContextPPAPI(), index, divisor);
+}
+