gecko-dev/gfx/gl/TextureImageCGL.mm

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "TextureImageCGL.h"
#include "GLContext.h"
#include "gfx2DGlue.h"
#include "gfxQuartzSurface.h"
#include "gfxPlatform.h"
#include "gfxFailure.h"
namespace mozilla {
using namespace gfx;
namespace gl {
TextureImageCGL::TextureImageCGL(GLuint aTexture,
const IntSize& aSize,
GLenum aWrapMode,
ContentType aContentType,
GLContext* aContext,
TextureImage::Flags aFlags)
: BasicTextureImage(aTexture, aSize, aWrapMode, aContentType,
aContext, aFlags)
, mPixelBuffer(0)
, mBoundPixelBuffer(false)
{}
TextureImageCGL::~TextureImageCGL()
{
if (mPixelBuffer) {
mGLContext->MakeCurrent();
mGLContext->fDeleteBuffers(1, &mPixelBuffer);
}
}
bool
TextureImageCGL::FinishedSurfaceUpdate()
{
if (mBoundPixelBuffer) {
mGLContext->MakeCurrent();
mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, mPixelBuffer);
mGLContext->fUnmapBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER);
return true;
}
return false;
}
void
TextureImageCGL::FinishedSurfaceUpload()
{
if (mBoundPixelBuffer) {
mGLContext->MakeCurrent();
mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, 0);
mBoundPixelBuffer = false;
}
}
already_AddRefed<TextureImage>
CreateTextureImageCGL(GLContext* gl,
const gfx::IntSize& aSize,
TextureImage::ContentType aContentType,
GLenum aWrapMode,
TextureImage::Flags aFlags,
TextureImage::ImageFormat aImageFormat)
{
if (!gl->IsOffscreenSizeAllowed(aSize) &&
gfxPlatform::OffMainThreadCompositingEnabled()) {
NS_ASSERTION(aWrapMode == LOCAL_GL_CLAMP_TO_EDGE, "Can't support wrapping with tiles!");
RefPtr<TextureImage> t = new gl::TiledTextureImage(gl, aSize, aContentType,
aFlags, aImageFormat);
return t.forget();
}
return CreateBasicTextureImage(gl, aSize, aContentType, aWrapMode,
aFlags);
}
already_AddRefed<TextureImage>
TileGenFuncCGL(GLContext *gl,
const IntSize& aSize,
TextureImage::ContentType aContentType,
TextureImage::Flags aFlags)
{
bool useNearestFilter = aFlags & TextureImage::UseNearestFilter;
gl->MakeCurrent();
GLuint texture;
gl->fGenTextures(1, &texture);
gl->fActiveTexture(LOCAL_GL_TEXTURE0);
gl->fBindTexture(LOCAL_GL_TEXTURE_2D, texture);
GLint texfilter = useNearestFilter ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR;
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, texfilter);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, texfilter);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
RefPtr<TextureImageCGL> teximage
(new TextureImageCGL(texture, aSize, LOCAL_GL_CLAMP_TO_EDGE, aContentType,
gl, aFlags));
return teximage.forget();
}
} // namespace gl
} // namespace mozilla