forked from mirrors/gecko-dev
143 lines
4.8 KiB
C++
143 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 TEX_UNPACK_BLOB_H_
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#define TEX_UNPACK_BLOB_H_
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#include "GLContextTypes.h"
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#include "mozilla/RefPtr.h"
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#include "WebGLStrongTypes.h"
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#include "WebGLTypes.h"
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#include <memory>
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namespace mozilla {
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class UniqueBuffer;
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class WebGLContext;
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class WebGLTexture;
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namespace dom {
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class Element;
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class HTMLCanvasElement;
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class HTMLVideoElement;
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} // namespace dom
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namespace gfx {
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class DataSourceSurface;
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} // namespace gfx
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namespace layers {
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class Image;
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class ImageContainer;
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} // namespace layers
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bool IsTarget3D(TexImageTarget target);
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namespace webgl {
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struct PackingInfo;
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struct DriverUnpackInfo;
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Maybe<std::string> BlitPreventReason(int32_t level, const ivec3& offset,
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const webgl::PackingInfo&,
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const TexUnpackBlobDesc&);
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class TexUnpackBlob {
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public:
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const TexUnpackBlobDesc& mDesc;
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bool mNeedsExactUpload = true;
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static std::unique_ptr<TexUnpackBlob> Create(const TexUnpackBlobDesc&);
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protected:
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explicit TexUnpackBlob(const TexUnpackBlobDesc& desc) : mDesc(desc) {
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MOZ_ASSERT_IF(!IsTarget3D(mDesc.imageTarget), mDesc.size.z == 1);
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}
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public:
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virtual ~TexUnpackBlob() = default;
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protected:
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bool ConvertIfNeeded(const WebGLContext*, const uint32_t rowLength,
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const uint32_t rowCount, WebGLTexelFormat srcFormat,
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const uint8_t* const srcBegin, const ptrdiff_t srcStride,
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WebGLTexelFormat dstFormat, const ptrdiff_t dstStride,
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const uint8_t** const out_begin,
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UniqueBuffer* const out_anchoredBuffer) const;
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public:
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virtual bool HasData() const { return true; }
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virtual bool Validate(const WebGLContext*, const webgl::PackingInfo& pi) = 0;
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// Returns false when we've generated a WebGL error.
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// Returns true but with a non-zero *out_error if we still need to generate a
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// WebGL error.
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virtual bool TexOrSubImage(bool isSubImage, bool needsRespec,
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WebGLTexture* tex, GLint level,
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const webgl::DriverUnpackInfo* dui, GLint xOffset,
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GLint yOffset, GLint zOffset,
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const webgl::PackingInfo& pi,
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GLenum* const out_error) const = 0;
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};
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class TexUnpackBytes final : public TexUnpackBlob {
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public:
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explicit TexUnpackBytes(const TexUnpackBlobDesc& desc) : TexUnpackBlob(desc) {
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MOZ_ASSERT(mDesc.srcAlphaType == gfxAlphaType::NonPremult);
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}
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virtual bool HasData() const override {
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return mDesc.pboOffset || mDesc.cpuData;
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}
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virtual bool Validate(const WebGLContext*,
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const webgl::PackingInfo& pi) override;
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virtual bool TexOrSubImage(bool isSubImage, bool needsRespec,
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WebGLTexture* tex, GLint level,
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const webgl::DriverUnpackInfo* dui, GLint xOffset,
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GLint yOffset, GLint zOffset,
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const webgl::PackingInfo& pi,
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GLenum* const out_error) const override;
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};
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class TexUnpackImage final : public TexUnpackBlob {
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public:
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explicit TexUnpackImage(const TexUnpackBlobDesc& desc)
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: TexUnpackBlob(desc) {}
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~TexUnpackImage(); // Prevent needing to define layers::Image in the header.
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virtual bool Validate(const WebGLContext*,
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const webgl::PackingInfo& pi) override;
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virtual bool TexOrSubImage(bool isSubImage, bool needsRespec,
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WebGLTexture* tex, GLint level,
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const webgl::DriverUnpackInfo* dui, GLint xOffset,
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GLint yOffset, GLint zOffset,
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const webgl::PackingInfo& dstPI,
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GLenum* const out_error) const override;
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};
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class TexUnpackSurface final : public TexUnpackBlob {
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public:
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explicit TexUnpackSurface(const TexUnpackBlobDesc& desc)
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: TexUnpackBlob(desc) {}
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~TexUnpackSurface();
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virtual bool Validate(const WebGLContext*,
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const webgl::PackingInfo& pi) override;
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virtual bool TexOrSubImage(bool isSubImage, bool needsRespec,
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WebGLTexture* tex, GLint level,
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const webgl::DriverUnpackInfo* dui, GLint xOffset,
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GLint yOffset, GLint zOffset,
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const webgl::PackingInfo& dstPI,
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GLenum* const out_error) const override;
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};
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} // namespace webgl
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} // namespace mozilla
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#endif // TEX_UNPACK_BLOB_H_
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