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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:44:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:44:51 +0000 |
commit | 9e3c08db40b8916968b9f30096c7be3f00ce9647 (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /gfx/gl/GLUploadHelpers.h | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/gl/GLUploadHelpers.h')
-rw-r--r-- | gfx/gl/GLUploadHelpers.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/gfx/gl/GLUploadHelpers.h b/gfx/gl/GLUploadHelpers.h new file mode 100644 index 0000000000..3bf071fd0b --- /dev/null +++ b/gfx/gl/GLUploadHelpers.h @@ -0,0 +1,77 @@ +/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 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/. */ + +#ifndef GLUploadHelpers_h_ +#define GLUploadHelpers_h_ + +#include "GLDefs.h" +#include "mozilla/gfx/Types.h" +#include "nsPoint.h" +#include "nsRegionFwd.h" + +namespace mozilla { + +namespace gfx { +class DataSourceSurface; +} // namespace gfx + +namespace gl { + +class GLContext; + +/** + * Uploads image data to an OpenGL texture, initializing the texture + * first if necessary. + * + * \param gl The GL Context to use. + * \param aData Start of image data of surface to upload. + * Corresponds to the first pixel of the texture. + * \param aDataSize The image data's size. + * \param aStride The image data's stride. + * \param aFormat The image data's format. + * \param aDstRegion Region of the texture to upload. + * \param aTexture The OpenGL texture to use. Must refer to a valid texture. + * \param aSize The full size of the texture. + * \param aOutUploadSize If set, the number of bytes the texture requires will + * be returned here. + * \param aNeedInit Indicates whether a new texture must be allocated. + * \param aTextureUnit The texture unit used temporarily to upload the surface. + * This may be overridden, so clients should not rely on + * the aTexture being bound to aTextureUnit after this call, + * or even on aTextureUnit being active. + * \param aTextureTarget The texture target to use. + * \return Surface format of this texture. + */ +gfx::SurfaceFormat UploadImageDataToTexture( + GLContext* gl, unsigned char* aData, const gfx::IntSize& aDataSize, + const gfx::IntPoint& aDstOffset, int32_t aStride, + gfx::SurfaceFormat aFormat, const nsIntRegion& aDstRegion, GLuint aTexture, + const gfx::IntSize& aSize, size_t* aOutUploadSize = nullptr, + bool aNeedInit = false, GLenum aTextureUnit = LOCAL_GL_TEXTURE0, + GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D); + +/** + * Convenience wrapper around UploadImageDataToTexture for + * gfx::DataSourceSurface's. + * + * \param aSurface The surface from which to upload image data. + * \param aSrcPoint Offset into aSurface where this texture's data begins. + */ +gfx::SurfaceFormat UploadSurfaceToTexture( + GLContext* gl, gfx::DataSourceSurface* aSurface, + const nsIntRegion& aDstRegion, GLuint aTexture, const gfx::IntSize& aSize, + size_t* aOutUploadSize = nullptr, bool aNeedInit = false, + const gfx::IntPoint& aSrcOffset = gfx::IntPoint(0, 0), + const gfx::IntPoint& aDstOffset = gfx::IntPoint(0, 0), + GLenum aTextureUnit = LOCAL_GL_TEXTURE0, + GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D); + +bool ShouldUploadSubTextures(GLContext* gl); +bool CanUploadNonPowerOfTwo(GLContext* gl); + +} // namespace gl +} // namespace mozilla + +#endif |