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// Copyright (c) 2010 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 "webkit/glue/plugins/mac_accelerated_surface_container.h"
#include "app/surface/io_surface_support_mac.h"
#include "base/logging.h"
#include "webkit/glue/plugins/mac_accelerated_surface_container_manager.h"
#include "webkit/glue/plugins/webplugin.h"
MacAcceleratedSurfaceContainer::MacAcceleratedSurfaceContainer()
: x_(0),
y_(0),
surface_(NULL),
width_(0),
height_(0),
texture_(0) {
}
MacAcceleratedSurfaceContainer::~MacAcceleratedSurfaceContainer() {
ReleaseIOSurface();
}
void MacAcceleratedSurfaceContainer::ReleaseIOSurface() {
if (surface_) {
CFRelease(surface_);
surface_ = NULL;
}
}
void MacAcceleratedSurfaceContainer::SetSizeAndIOSurface(
int32 width,
int32 height,
uint64 io_surface_identifier,
MacAcceleratedSurfaceContainerManager* manager) {
ReleaseIOSurface();
IOSurfaceSupport* io_surface_support = IOSurfaceSupport::Initialize();
if (io_surface_support) {
surface_ = io_surface_support->IOSurfaceLookup(
static_cast<uint32>(io_surface_identifier));
EnqueueTextureForDeletion(manager);
width_ = width;
height_ = height;
}
}
void MacAcceleratedSurfaceContainer::SetSizeAndTransportDIB(
int32 width,
int32 height,
TransportDIB::Handle transport_dib,
MacAcceleratedSurfaceContainerManager* manager) {
if (TransportDIB::is_valid(transport_dib)) {
transport_dib_.reset(TransportDIB::Map(transport_dib));
EnqueueTextureForDeletion(manager);
width_ = width;
height_ = height;
}
}
void MacAcceleratedSurfaceContainer::MoveTo(
const webkit_glue::WebPluginGeometry& geom) {
x_ = geom.window_rect.x();
y_ = geom.window_rect.y();
// TODO(kbr): may need to pay attention to cutout rects.
clipRect_ = geom.clip_rect;
}
void MacAcceleratedSurfaceContainer::Draw(CGLContextObj context) {
IOSurfaceSupport* io_surface_support = IOSurfaceSupport::Initialize();
GLenum target = GL_TEXTURE_RECTANGLE_ARB;
if (!texture_) {
if ((io_surface_support && !surface_) ||
(!io_surface_support && !transport_dib_.get()))
return;
glGenTextures(1, &texture_);
glBindTexture(target, texture_);
glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
// When using an IOSurface, the texture does not need to be repeatedly
// uploaded, so bind the IOSurface once during texture gen in this case.
if (io_surface_support) {
DCHECK(surface_);
// Don't think we need to identify a plane.
GLuint plane = 0;
io_surface_support->CGLTexImageIOSurface2D(context,
target,
GL_RGBA,
width_,
height_,
GL_BGRA,
GL_UNSIGNED_INT_8_8_8_8_REV,
surface_,
plane);
} else {
// Reserve space on the card for the actual texture upload, done with the
// glTexSubImage2D() call, below.
glTexImage2D(target,
0, // mipmap level 0
GL_RGBA, // internal format
width_,
height_,
0, // no border
GL_BGRA, // The GPU plugin read BGRA pixels
GL_UNSIGNED_INT_8_8_8_8_REV,
NULL); // No data, this call just reserves room.
}
}
// If using TransportDIBs, the texture needs to be uploaded every frame.
if (transport_dib_.get() != NULL) {
void* pixel_memory = transport_dib_->memory();
if (pixel_memory) {
glBindTexture(target, texture_);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1); // Needed for NPOT textures.
glTexSubImage2D(target,
0, // mipmap level 0
0, // x-offset
0, // y-offset
width_,
height_,
GL_BGRA, // The GPU plugin gave us BGRA pixels
GL_UNSIGNED_INT_8_8_8_8_REV,
pixel_memory);
}
}
if (texture_) {
// TODO(kbr): convert this to use only OpenGL ES 2.0 functionality
glBindTexture(target, texture_);
glEnable(target);
glBegin(GL_TRIANGLE_STRIP);
// TODO(kbr): may need to pay attention to cutout rects.
int clipX = clipRect_.x();
int clipY = clipRect_.y();
int clipWidth = clipRect_.width();
int clipHeight = clipRect_.height();
int x = x_ + clipX;
int y = y_ + clipY;
glTexCoord2f(clipX, height_ - clipY);
glVertex3f(x, y, 0);
glTexCoord2f(clipX + clipWidth, height_ - clipY);
glVertex3f(x + clipWidth, y, 0);
glTexCoord2f(clipX, height_ - clipY - clipHeight);
glVertex3f(x, y + clipHeight, 0);
glTexCoord2f(clipX + clipWidth, height_ - clipY - clipHeight);
glVertex3f(x + clipWidth, y + clipHeight, 0);
glEnd();
glDisable(target);
}
}
void MacAcceleratedSurfaceContainer::EnqueueTextureForDeletion(
MacAcceleratedSurfaceContainerManager* manager) {
manager->EnqueueTextureForDeletion(texture_);
texture_ = 0;
}
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