gpu: Add support for GLX_EXT_texture_from_pixmap extension.

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 <list>
@@ skipping 32 matching lines @@
 #include "gpu/command_buffer/service/renderbuffer_manager.h"
 #include "gpu/command_buffer/service/shader_manager.h"
 #include "gpu/command_buffer/service/shader_translator.h"
 #include "gpu/command_buffer/service/shader_translator_cache.h"
 #include "gpu/command_buffer/service/stream_texture.h"
 #include "gpu/command_buffer/service/stream_texture_manager.h"
 #include "gpu/command_buffer/service/texture_definition.h"
 #include "gpu/command_buffer/service/texture_manager.h"
 #include "gpu/command_buffer/service/vertex_attrib_manager.h"
 #include "ui/gl/gl_context.h"
+#include "ui/gl/gl_image.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface.h"
 #if defined(OS_MACOSX)
 #include "ui/surface/io_surface_support_mac.h"
 #endif
 
 #if !defined(GL_DEPTH24_STENCIL8)
 #define GL_DEPTH24_STENCIL8 0x88F0
 #endif
 
@@ skipping 695 matching lines @@
     GLenum internal_format);
 
   // Wrapper for TexStorage2DEXT.
   void DoTexStorage2DEXT(
     GLenum target,
     GLint levels,
     GLenum internal_format,
     GLsizei width,
     GLsizei height);
 
+  // Wrapper for TexImagePixmap2DCHROMIUM.
+  void DoTexImagePixmap2DCHROMIUM(
+    GLenum target,
+    GLuint pixmap_id);
+
   void DoProduceTextureCHROMIUM(GLenum target, const GLbyte* key);
   void DoConsumeTextureCHROMIUM(GLenum target, const GLbyte* key);
 
   // Creates a ProgramInfo for the given program.
   ProgramManager::ProgramInfo* CreateProgramInfo(
       GLuint client_id, GLuint service_id) {
     return program_manager()->CreateProgramInfo(client_id, service_id);
   }
 
   // Gets the program info for the given program. Returns NULL if none exists.
@@ skipping 476 matching lines @@
       case GL_TEXTURE_RECTANGLE_ARB:
         info = unit.bound_texture_rectangle_arb;
         break;
       default:
         NOTREACHED();
         return NULL;
     }
     return info;
   }
 
+  TextureManager::TextureInfo* GetTextureInfoForTargetUnlessDefault(
+      GLenum target) {
+    TextureManager::TextureInfo* info = GetTextureInfoForTarget(target);
+    if (!info)
+      return NULL;
+    if (info == texture_manager()->GetDefaultTextureInfo(target))
+      return NULL;
+    return info;
+  }
+
   GLenum GetBindTargetForSamplerType(GLenum type) {
     DCHECK(type == GL_SAMPLER_2D || type == GL_SAMPLER_CUBE ||
            type == GL_SAMPLER_EXTERNAL_OES || type == GL_SAMPLER_2D_RECT_ARB);
     switch (type) {
       case GL_SAMPLER_2D:
         return GL_TEXTURE_2D;
       case GL_SAMPLER_CUBE:
         return GL_TEXTURE_CUBE_MAP;
       case GL_SAMPLER_EXTERNAL_OES:
         return GL_TEXTURE_EXTERNAL_OES;
@@ skipping 7521 matching lines @@
     // support for binding an IOSurface to a NPOT TEXTURE_2D texture, we
     // could delete a lot of code. For now, perform strict validation so we
     // know what's going on.
     SetGLError(
         GL_INVALID_OPERATION,
         "glTexImageIOSurface2DCHROMIUM",
         "requires TEXTURE_RECTANGLE_ARB target");
     return;
   }
 
-  TextureManager::TextureInfo* info = GetTextureInfoForTarget(target);
+  // Default target might be conceptually valid, but disallow it to avoid
+  // accidents.
+  TextureManager::TextureInfo* info = GetTextureInfoForTargetUnlessDefault(
+      target);
   if (!info) {
     SetGLError(GL_INVALID_OPERATION,
                "glTexImageIOSurface2DCHROMIUM", "no rectangle texture bound");
     return;
   }
-  if (info == texture_manager()->GetDefaultTextureInfo(target)) {
-    // Maybe this is conceptually valid, but disallow it to avoid accidents.
-    SetGLError(GL_INVALID_OPERATION,
-               "glTexImageIOSurface2DCHROMIUM", "can't bind default texture");
-    return;
-  }
 
   // Look up the new IOSurface. Note that because of asynchrony
   // between processes this might fail; during live resizing the
   // plugin process might allocate and release an IOSurface before
   // this process gets a chance to look it up. Hold on to any old
   // IOSurface in this case.
   CFTypeRef surface = surface_support->IOSurfaceLookup(io_surface_id);
   if (!surface) {
     SetGLError(
         GL_INVALID_OPERATION,
@@ skipping 355 matching lines @@
 
   if (!texture_manager()->Restore(info, definition.release())) {
     SetGLError(GL_INVALID_OPERATION,
                "glConsumeTextureCHROMIUM", "invalid texture");
     return;
   }
 
   BindAndApplyTextureParameters(info);
 }
 
+void GLES2DecoderImpl::DoTexImagePixmap2DCHROMIUM(
+    GLenum target, GLuint pixmap_id) {
+  if (target != GL_TEXTURE_2D) {
+    // This might be supported in the future.
+    SetGLError(
+        GL_INVALID_OPERATION,
+        "glTexImagePixmap2DCHROMIUM", "requires TEXTURE_2D target");
+    return;
+  }
+
+  // Default target might be conceptually valid, but disallow it to avoid
+  // accidents.
+  TextureManager::TextureInfo* info = GetTextureInfoForTargetUnlessDefault(
+      target);
+  if (!info) {
+    SetGLError(GL_INVALID_OPERATION,
+               "glTexImagePixmap2DCHROMIUM", "no texture bound");
+    return;
+  }
+
+  scoped_refptr<gfx::GLImage> pixmap_gl_image = info->GetLevelImage(target, 0);
+  if (pixmap_id) {
+    if (!pixmap_gl_image) {
+      pixmap_gl_image = gfx::GLImage::CreatePixmapGLImage(surface_);
+      if (!pixmap_gl_image) {
+        SetGLError(GL_INVALID_OPERATION,
+                   "glTexImagePixmap2DCHROMIUM",
+                   "fail to create PixmapGLImage");
+        return;
+      }
+    }
+
+    // Update GL image and bind to texture.
+    if (!pixmap_gl_image->RebindPixmap(pixmap_id)) {
+      SetGLError(GL_INVALID_OPERATION,
+                 "glTexImagePixmap2DCHROMIUM",
+                 "fail to bind Pixmap with the given ID");
+      return;
+    }
+
+    gfx::Size size = pixmap_gl_image->GetSize();
+    texture_manager()->SetLevelInfo(
+        info, target, 0, GL_RGBA, size.width(), size.height(), 1, 0,
+        GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, true);
+    texture_manager()->SetLevelImage(info, target, 0, pixmap_gl_image);
+  } else {
+    // Release pixmap image previously bound to this texture.
+    if (pixmap_gl_image)
+      pixmap_gl_image->RebindPixmap(0);
+
+    texture_manager()->SetLevelInfo(
+        info, 0, 0, GL_RGBA, 0, 0, 1, 0,
+        GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, false);
+  }
+}
+
 // 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