gpu: Add CHROMIUM_schedule_ca_layer

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 <cmath>
@@ skipping 43 matching lines @@
 #include "gpu/command_buffer/service/shader_translator.h"
 #include "gpu/command_buffer/service/texture_manager.h"
 #include "gpu/command_buffer/service/valuebuffer_manager.h"
 #include "gpu/command_buffer/service/vertex_array_manager.h"
 #include "gpu/command_buffer/service/vertex_attrib_manager.h"
 #include "third_party/smhasher/src/City.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/overlay_transform.h"
+#include "ui/gfx/transform.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_fence.h"
 #include "ui/gl/gl_image.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/gl/gl_version_info.h"
 #include "ui/gl/gpu_timing.h"
 
 #if defined(OS_MACOSX)
@@ skipping 9356 matching lines @@
           image,
           gfx::Rect(c.bounds_x, c.bounds_y, c.bounds_width, c.bounds_height),
           gfx::RectF(c.uv_x, c.uv_y, c.uv_width, c.uv_height))) {
     LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION,
                        "glScheduleOverlayPlaneCHROMIUM",
                        "failed to schedule overlay");
   }
   return error::kNoError;
 }
 
+error::Error GLES2DecoderImpl::HandleScheduleCALayerCHROMIUM(
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::ScheduleCALayerCHROMIUM& c =
+      *static_cast<const gles2::cmds::ScheduleCALayerCHROMIUM*>(cmd_data);
+  gl::GLImage* image = nullptr;
+  if (c.contents_texture_id) {
+    TextureRef* ref = texture_manager()->GetTexture(c.contents_texture_id);
+    if (!ref) {
+      LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, "glScheduleCALayerCHROMIUM",
+                         "unknown texture");
+      return error::kNoError;
+    }
+    Texture::ImageState image_state;
+    image = ref->texture()->GetLevelImage(ref->texture()->target(), 0,
+                                          &image_state);
+    if (!image || image_state != Texture::BOUND) {
+      LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, "glScheduleCALayerCHROMIUM",
+                         "unsupported texture format");
+      return error::kNoError;
+    }
+  }
+
+  const GLfloat* mem = GetSharedMemoryAs<const GLfloat*>(c.shm_id, c.shm_offset,
+                                                         22 * sizeof(GLfloat));
+  if (!mem) {
+    return error::kOutOfBounds;
+  }
+  gfx::RectF contents_rect(mem[0], mem[1], mem[2], mem[3]);
+  gfx::SizeF bounds_size(mem[4], mem[5]);
+  gfx::Transform transform(mem[6], mem[10], mem[14], mem[18], mem[7], mem[11],

[bajones, 2015/11/09 19:42:22]

Nit: I had to stare at this for a bit to understand it. Could you put the line
breaks after every 4 values to make it easier to read at a glance? Thanks!

[ccameron, 2015/11/09 20:04:07]

git cl format strikes again!

Moved it back to 4x4.

+                           mem[15], mem[19], mem[8], mem[12], mem[16], mem[20],
+                           mem[9], mem[13], mem[17], mem[21]);
+  if (!surface_->ScheduleCALayer(image, contents_rect, c.opacity,
+                                 c.background_color, bounds_size, transform)) {
+    LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION, "glScheduleCALayerCHROMIUM",
+                       "failed to schedule CALayer");
+  }
+  return error::kNoError;
+}
+
 error::Error GLES2DecoderImpl::GetAttribLocationHelper(
     GLuint client_id, uint32 location_shm_id, uint32 location_shm_offset,
     const std::string& name_str) {
   if (!StringIsValidForGLES(name_str.c_str())) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_VALUE, "glGetAttribLocation", "Invalid character");
     return error::kNoError;
   }
   Program* program = GetProgramInfoNotShader(
       client_id, "glGetAttribLocation");
@@ skipping 6150 matching lines @@
   return error::kNoError;
 }
 
 // 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