michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "TextureImageCGL.h"
michael@0: #include "GLContext.h"
michael@0: #include "gfx2DGlue.h"
michael@0: #include "gfxQuartzSurface.h"
michael@0: #include "gfxPlatform.h"
michael@0: #include "gfxFailure.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: using namespace gfx;
michael@0: 
michael@0: namespace gl {
michael@0: 
michael@0: TextureImageCGL::TextureImageCGL(GLuint aTexture,
michael@0:                 const nsIntSize& aSize,
michael@0:                 GLenum aWrapMode,
michael@0:                 ContentType aContentType,
michael@0:                 GLContext* aContext,
michael@0:                 TextureImage::Flags aFlags,
michael@0:                 TextureImage::ImageFormat aImageFormat)
michael@0:     : BasicTextureImage(aTexture, aSize, aWrapMode, aContentType,
michael@0:                         aContext, aFlags, aImageFormat)
michael@0:     , mPixelBuffer(0)
michael@0:     , mPixelBufferSize(0)
michael@0:     , mBoundPixelBuffer(false)
michael@0: {}
michael@0: 
michael@0: TextureImageCGL::~TextureImageCGL()
michael@0: {
michael@0:     if (mPixelBuffer) {
michael@0:         mGLContext->MakeCurrent();
michael@0:         mGLContext->fDeleteBuffers(1, &mPixelBuffer);
michael@0:     }
michael@0: }
michael@0: 
michael@0: already_AddRefed<gfxASurface>
michael@0: TextureImageCGL::GetSurfaceForUpdate(const gfxIntSize& aSize, ImageFormat aFmt)
michael@0: {
michael@0:     IntSize size(aSize.width + 1, aSize.height + 1);
michael@0:     mGLContext->MakeCurrent();
michael@0:     if (!mGLContext->
michael@0:         IsExtensionSupported(GLContext::ARB_pixel_buffer_object))
michael@0:     {
michael@0:         return gfxPlatform::GetPlatform()->
michael@0:             CreateOffscreenSurface(size,
michael@0:                                     gfxASurface::ContentFromFormat(aFmt));
michael@0:     }
michael@0: 
michael@0:     if (!mPixelBuffer) {
michael@0:         mGLContext->fGenBuffers(1, &mPixelBuffer);
michael@0:     }
michael@0:     mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, mPixelBuffer);
michael@0:     int32_t length = size.width * 4 * size.height;
michael@0: 
michael@0:     if (length > mPixelBufferSize) {
michael@0:         mGLContext->fBufferData(LOCAL_GL_PIXEL_UNPACK_BUFFER, length,
michael@0:                                 NULL, LOCAL_GL_STREAM_DRAW);
michael@0:         mPixelBufferSize = length;
michael@0:     }
michael@0:     unsigned char* data =
michael@0:         (unsigned char*)mGLContext->
michael@0:             fMapBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER,
michael@0:                         LOCAL_GL_WRITE_ONLY);
michael@0: 
michael@0:     mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, 0);
michael@0: 
michael@0:     if (!data) {
michael@0:         nsAutoCString failure;
michael@0:         failure += "Pixel buffer binding failed: ";
michael@0:         failure.AppendPrintf("%dx%d\n", size.width, size.height);
michael@0:         gfx::LogFailure(failure);
michael@0: 
michael@0:         mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, 0);
michael@0:         return gfxPlatform::GetPlatform()->
michael@0:             CreateOffscreenSurface(size,
michael@0:                                     gfxASurface::ContentFromFormat(aFmt));
michael@0:     }
michael@0: 
michael@0:     nsRefPtr<gfxQuartzSurface> surf =
michael@0:         new gfxQuartzSurface(data, ThebesIntSize(size), size.width * 4, aFmt);
michael@0: 
michael@0:     mBoundPixelBuffer = true;
michael@0:     return surf.forget();
michael@0: }
michael@0: 
michael@0: bool
michael@0: TextureImageCGL::FinishedSurfaceUpdate()
michael@0: {
michael@0:     if (mBoundPixelBuffer) {
michael@0:         mGLContext->MakeCurrent();
michael@0:         mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, mPixelBuffer);
michael@0:         mGLContext->fUnmapBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER);
michael@0:         return true;
michael@0:     }
michael@0:     return false;
michael@0: }
michael@0: 
michael@0: void
michael@0: TextureImageCGL::FinishedSurfaceUpload()
michael@0: {
michael@0:     if (mBoundPixelBuffer) {
michael@0:         mGLContext->MakeCurrent();
michael@0:         mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, 0);
michael@0:         mBoundPixelBuffer = false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: already_AddRefed<TextureImage>
michael@0: CreateTextureImageCGL(GLContext* gl,
michael@0:                       const gfx::IntSize& aSize,
michael@0:                       TextureImage::ContentType aContentType,
michael@0:                       GLenum aWrapMode,
michael@0:                       TextureImage::Flags aFlags,
michael@0:                       TextureImage::ImageFormat aImageFormat)
michael@0: {
michael@0:     if (!gl->IsOffscreenSizeAllowed(aSize) &&
michael@0:         gfxPlatform::OffMainThreadCompositingEnabled()) {
michael@0:       NS_ASSERTION(aWrapMode == LOCAL_GL_CLAMP_TO_EDGE, "Can't support wrapping with tiles!");
michael@0:       nsRefPtr<TextureImage> t = new gl::TiledTextureImage(gl, aSize, aContentType,
michael@0:                                                            aFlags, aImageFormat);
michael@0:       return t.forget();
michael@0:     }
michael@0: 
michael@0:     return CreateBasicTextureImage(gl, aSize, aContentType, aWrapMode,
michael@0:                                    aFlags, aImageFormat);
michael@0: }
michael@0: 
michael@0: already_AddRefed<TextureImage>
michael@0: TileGenFuncCGL(GLContext *gl,
michael@0:                const nsIntSize& aSize,
michael@0:                TextureImage::ContentType aContentType,
michael@0:                TextureImage::Flags aFlags,
michael@0:                TextureImage::ImageFormat aImageFormat)
michael@0: {
michael@0:     bool useNearestFilter = aFlags & TextureImage::UseNearestFilter;
michael@0:     gl->MakeCurrent();
michael@0: 
michael@0:     GLuint texture;
michael@0:     gl->fGenTextures(1, &texture);
michael@0: 
michael@0:     gl->fActiveTexture(LOCAL_GL_TEXTURE0);
michael@0:     gl->fBindTexture(LOCAL_GL_TEXTURE_2D, texture);
michael@0: 
michael@0:     GLint texfilter = useNearestFilter ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR;
michael@0:     gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, texfilter);
michael@0:     gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, texfilter);
michael@0:     gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
michael@0:     gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
michael@0: 
michael@0:     nsRefPtr<TextureImageCGL> teximage
michael@0:         (new TextureImageCGL(texture, aSize, LOCAL_GL_CLAMP_TO_EDGE, aContentType,
michael@0:                              gl, aFlags, aImageFormat));
michael@0:     return teximage.forget();
michael@0: }
michael@0: 
michael@0: }
michael@0: }