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