Change glimage to accept a type.

gpu/command_buffer/client/gles2_implementation.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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <algorithm>
 #include <map>
@@ skipping 3930 matching lines @@
   CheckGLError();
 }
 
 GLuint GLES2Implementation::InsertSyncPointCHROMIUM() {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glInsertSyncPointCHROMIUM");
   helper_->CommandBufferHelper::Flush();
   return gpu_control_->InsertSyncPoint();
 }
 
-GLuint GLES2Implementation::CreateImageCHROMIUMHelper(
-    GLsizei width, GLsizei height, GLenum internalformat) {
+GLuint GLES2Implementation::CreateImageCHROMIUMHelper(GLsizei width,
+                                                      GLsizei height,
+                                                      GLenum internalformat,
+                                                      GLenum usage) {
   if (width <= 0) {
     SetGLError(GL_INVALID_VALUE, "glCreateImageCHROMIUM", "width <= 0");
     return 0;
   }
 
   if (height <= 0) {
     SetGLError(GL_INVALID_VALUE, "glCreateImageCHROMIUM", "height <= 0");
     return 0;
   }
   // Flush the command stream to ensure ordering in case the newly
   // returned image_id has recently been in use with a different buffer.
   helper_->CommandBufferHelper::Flush();
 
+  gfx::GpuMemoryBuffer::Usage memory_usage;
+  switch (usage) {
+    case GL_READ_WRITE:
+      memory_usage = gfx::GpuMemoryBuffer::READ_WRITE;
+      break;
+    case GL_SCANOUT:
+      memory_usage = gfx::GpuMemoryBuffer::SCANOUT;
+      break;
+    default:
+      SetGLError(
+          GL_INVALID_ENUM, "glMapImageCHROMIUM", "invalid GPU access mode");
+      return 0;
+  }
+
   // Create new buffer.
   GLuint buffer_id = gpu_memory_buffer_tracker_->CreateBuffer(
-      width, height, internalformat);
+      width, height, internalformat, memory_usage);
   if (buffer_id == 0) {
     SetGLError(GL_OUT_OF_MEMORY, "glCreateImageCHROMIUM", "out of GPU memory.");
     return 0;
   }
   return buffer_id;
 }
 
-GLuint GLES2Implementation::CreateImageCHROMIUM(
-    GLsizei width, GLsizei height, GLenum internalformat) {
+GLuint GLES2Implementation::CreateImageCHROMIUM(GLsizei width,
+                                                GLsizei height,
+                                                GLenum internalformat,
+                                                GLenum usage) {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
-  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glCreateImageCHROMIUM("
-      << width << ", "
-      << height << ", "
-      << GLES2Util::GetStringTextureInternalFormat(internalformat) << ")");
-  GLuint image_id = CreateImageCHROMIUMHelper(width, height, internalformat);
+  GPU_CLIENT_LOG(
+      "[" << GetLogPrefix() << "] glCreateImageCHROMIUM(" << width << ", "
+          << height << ", "
+          << GLES2Util::GetStringTextureInternalFormat(internalformat) << ", "
+          << GLES2Util::GetStringTextureInternalFormat(usage) << ")");
+  GLuint image_id =
+      CreateImageCHROMIUMHelper(width, height, internalformat, usage);
   CheckGLError();
   return image_id;
 }
 
 void GLES2Implementation::DestroyImageCHROMIUMHelper(GLuint image_id) {
   gfx::GpuMemoryBuffer* gpu_buffer = gpu_memory_buffer_tracker_->GetBuffer(
       image_id);
   if (!gpu_buffer) {
     SetGLError(GL_INVALID_OPERATION, "glDestroyImageCHROMIUM", "invalid image");
     return;
@@ skipping 30 matching lines @@
 
 void GLES2Implementation::UnmapImageCHROMIUM(GLuint image_id) {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glUnmapImageCHROMIUM("
        << image_id << ")");
 
   UnmapImageCHROMIUMHelper(image_id);
   CheckGLError();
 }
 
-void* GLES2Implementation::MapImageCHROMIUMHelper(GLuint image_id,
-                                                  GLenum access) {
+void* GLES2Implementation::MapImageCHROMIUMHelper(GLuint image_id) {
   gfx::GpuMemoryBuffer* gpu_buffer = gpu_memory_buffer_tracker_->GetBuffer(
       image_id);
   if (!gpu_buffer) {
     SetGLError(GL_INVALID_OPERATION, "glMapImageCHROMIUM", "invalid image");
     return NULL;
   }
-  gfx::GpuMemoryBuffer::AccessMode mode;
-  switch(access) {
-    case GL_WRITE_ONLY:
-      mode = gfx::GpuMemoryBuffer::WRITE_ONLY;
-      break;
-    case GL_READ_ONLY:
-      mode = gfx::GpuMemoryBuffer::READ_ONLY;
-      break;
-    case GL_READ_WRITE:
-      mode = gfx::GpuMemoryBuffer::READ_WRITE;
-      break;
-    default:
-      SetGLError(GL_INVALID_ENUM, "glMapImageCHROMIUM",
-                 "invalid GPU access mode");
-      return NULL;
-  }
 
   if (gpu_buffer->IsMapped()) {
     SetGLError(GL_INVALID_OPERATION, "glMapImageCHROMIUM", "already mapped");
     return NULL;
   }
 
-  return gpu_buffer->Map(mode);
+  return gpu_buffer->Map();
 }
 
-void* GLES2Implementation::MapImageCHROMIUM(
-    GLuint image_id, GLenum access) {
+void* GLES2Implementation::MapImageCHROMIUM(GLuint image_id) {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
-  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glMapImageCHROMIUM("
-      << image_id << ", "
-      << GLES2Util::GetStringEnum(access) << ")");
+  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glMapImageCHROMIUM(" << image_id
+                     << ")");
 
-  void* mapped = MapImageCHROMIUMHelper(image_id, access);
+  void* mapped = MapImageCHROMIUMHelper(image_id);
   CheckGLError();
   return mapped;
 }
 
 void GLES2Implementation::GetImageParameterivCHROMIUMHelper(
     GLuint image_id, GLenum pname, GLint* params) {
   if (pname != GL_IMAGE_ROWBYTES_CHROMIUM) {
     SetGLError(GL_INVALID_ENUM, "glGetImageParameterivCHROMIUM",
                "invalid parameter");
     return;
@@ skipping 52 matching lines @@
   return true;
 }
 
 // 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/client/gles2_implementation_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu