gpu: Add support for GLX_EXT_texture_from_pixmap extension.

gpu/command_buffer/service/texture_manager.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_TEXTURE_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_TEXTURE_MANAGER_H_
 
 #include <vector>
 #include "base/basictypes.h"
 #include "base/hash_tables.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "gpu/command_buffer/service/feature_info.h"
 #include "gpu/command_buffer/service/gl_utils.h"
 #include "gpu/gpu_export.h"
+#include "ui/gl/gl_image.h"
 
 namespace gpu {
 namespace gles2 {
 
 class GLES2Decoder;
 class Display;
 class TextureDefinition;
 
 // This class keeps track of the textures and their sizes so we can do NPOT and
 // texture complete checking.
@@ skipping 89 matching lines @@
 
     // Get the width and height for a particular level. Returns false if level
     // does not exist.
     bool GetLevelSize(
         GLint face, GLint level, GLsizei* width, GLsizei* height) const;
 
     // Get the type of a level. Returns false if level does not exist.
     bool GetLevelType(
         GLint face, GLint level, GLenum* type, GLenum* internal_format) const;
 
+    // Get the image bound to a particular level. Returns NULL if level
+    // does not exist.
+    scoped_refptr<gfx::GLImage> GetLevelImage(GLint face, GLint level) const;
+
     bool IsDeleted() const {
       return deleted_;
     }
 
     // Returns true of the given dimensions are inside the dimensions of the
     // level and if the format and type match the level.
     bool ValidForTexture(
         GLint face,
         GLint level,
         GLint xoffset,
@@ skipping 69 matching lines @@
          : cleared(rhs.cleared),
            target(rhs.target),
            level(rhs.level),
            internal_format(rhs.internal_format),
            width(rhs.width),
            height(rhs.height),
            depth(rhs.depth),
            border(rhs.border),
            format(rhs.format),
            type(rhs.type),
+           image(rhs.image),
            estimated_size(rhs.estimated_size) {
       }
 
+      ~LevelInfo() {}
+
       bool cleared;
       GLenum target;
       GLint level;
       GLenum internal_format;
       GLsizei width;
       GLsizei height;
       GLsizei depth;
       GLint border;
       GLenum format;
       GLenum type;
+      scoped_refptr<gfx::GLImage> image;
       uint32 estimated_size;
     };
 
     // Set the info for a particular level.
     void SetLevelInfo(
         const FeatureInfo* feature_info,
         GLenum target,
         GLint level,
         GLenum internal_format,
         GLsizei width,
@@ skipping 45 matching lines @@
     // Sets the TextureInfo's target
     // Parameters:
     //   target: GL_TEXTURE_2D or GL_TEXTURE_CUBE_MAP or
     //           GL_TEXTURE_EXTERNAL_OES or GL_TEXTURE_RECTANGLE_ARB
     //   max_levels: The maximum levels this type of target can have.
     void SetTarget(GLenum target, GLint max_levels);
 
     // Update info about this texture.
     void Update(const FeatureInfo* feature_info);
 
+    // Set the image for a particular level.
+    void SetLevelImage(
+        const FeatureInfo* feature_info,
+        GLenum target,
+        GLint level,
+        scoped_refptr<gfx::GLImage> image);
+
     // Info about each face and level of texture.
     std::vector<std::vector<LevelInfo> > level_infos_;
 
     // The texture manager that manages this TextureInfo.
     TextureManager* manager_;
 
     // The id of the texure
     GLuint service_id_;
 
     // Whether this texture has been deleted.
@@ skipping 204 matching lines @@
       default:
         NOTREACHED();
         return 0;
     }
   }
 
   uint32 mem_represented() const {
     return mem_represented_;
   }
 
+  void SetLevelImage(
+      TextureInfo* info,
+      GLenum target,
+      GLint level,
+      scoped_refptr<gfx::GLImage> image);
+
  private:
   // Helper for Initialize().
   TextureInfo::Ref CreateDefaultAndBlackTextures(
       GLenum target,
       GLuint* black_texture);
 
   void UpdateMemRepresented();
 
   void StartTracking(TextureInfo* info);
   void StopTracking(TextureInfo* info);
@@ skipping 30 matching lines @@
   // The default textures for each target (texture name = 0)
   TextureInfo::Ref default_textures_[kNumDefaultTextures];
 
   DISALLOW_COPY_AND_ASSIGN(TextureManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_TEXTURE_MANAGER_H_