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546f98d63d
Backed out changeset 65ad9d8860d6 (bug 877115) Backed out changeset bf8095c168fb (bug 877115) Backed out changeset 290ad5863615 (bug 877115) Backed out changeset 4488ec28910e (bug 877115) Backed out changeset 45f8859c6fd6 (bug 877115) Backed out changeset 111cc426fa9e (bug 877115)
105 lines
3.7 KiB
C++
105 lines
3.7 KiB
C++
/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GLUploadHelpers_h_
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#define GLUploadHelpers_h_
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#include "GLDefs.h"
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#include "gfxTypes.h"
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#include "mozilla/gfx/Types.h"
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#include "nsPoint.h"
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class gfxASurface;
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class nsIntRegion;
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namespace mozilla {
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namespace gfx {
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class DataSourceSurface;
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}
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namespace gl {
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class GLContext;
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/**
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* Creates a RGB/RGBA texture (or uses one provided) and uploads the surface
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* contents to it within aSrcRect.
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*
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* aSrcRect.x/y will be uploaded to 0/0 in the texture, and the size
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* of the texture with be aSrcRect.width/height.
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*
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* If an existing texture is passed through aTexture, it is assumed it
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* has already been initialised with glTexImage2D (or this function),
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* and that its size is equal to or greater than aSrcRect + aDstPoint.
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* You can alternatively set the overwrite flag to true and have a new
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* texture memory block allocated.
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*
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* The aDstPoint parameter is ignored if no texture was provided
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* or aOverwrite is true.
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*
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* \param aData Image data to upload.
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* \param aDstRegion Region of texture to upload to.
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* \param aTexture Texture to use, or 0 to have one created for you.
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* \param aOverwrite Over an existing texture with a new one.
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* \param aSrcPoint Offset into aSrc where the region's bound's
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* TopLeft() sits.
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* \param aPixelBuffer Pass true to upload texture data with an
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* offset from the base data (generally for pixel buffer objects),
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* otherwise textures are upload with an absolute pointer to the data.
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* \param aTextureUnit, the texture unit used temporarily to upload the
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* surface. This testure may be overridden, clients should not rely on
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* the contents of this texture after this call or even on this
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* texture unit being active.
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* \return Surface format of this texture.
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*/
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gfx::SurfaceFormat
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UploadImageDataToTexture(GLContext* gl,
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unsigned char* aData,
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int32_t aStride,
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gfxImageFormat aFormat,
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const nsIntRegion& aDstRegion,
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GLuint& aTexture,
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bool aOverwrite = false,
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bool aPixelBuffer = false,
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GLenum aTextureUnit = LOCAL_GL_TEXTURE0,
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GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D);
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/**
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* Convenience wrapper around UploadImageDataToTexture for gfxASurfaces.
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*/
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gfx::SurfaceFormat
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UploadSurfaceToTexture(GLContext* gl,
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gfxASurface *aSurface,
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const nsIntRegion& aDstRegion,
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GLuint& aTexture,
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bool aOverwrite = false,
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const nsIntPoint& aSrcPoint = nsIntPoint(0, 0),
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bool aPixelBuffer = false,
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GLenum aTextureUnit = LOCAL_GL_TEXTURE0,
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GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D);
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/**
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* Convenience wrapper around UploadImageDataToTexture for gfx::DataSourceSurface's.
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*/
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gfx::SurfaceFormat
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UploadSurfaceToTexture(GLContext* gl,
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gfx::DataSourceSurface *aSurface,
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const nsIntRegion& aDstRegion,
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GLuint& aTexture,
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bool aOverwrite,
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const nsIntPoint& aSrcPoint,
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bool aPixelBuffer,
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GLenum aTextureUnit,
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GLenum aTextureTarget);
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bool CanUploadSubTextures(GLContext* gl);
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bool CanUploadNonPowerOfTwo(GLContext* gl);
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}
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}
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#endif
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