Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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 <memory>
#include "GLContextTypes.h"
#include "WebGLStrongTypes.h"
#include "WebGLTypes.h"
#include "mozilla/RefPtr.h"
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;
class SurfaceDescriptor;
} // namespace layers
bool IsTarget3D(TexImageTarget target);
namespace webgl {
struct PackingInfo;
struct DriverUnpackInfo;
const char* BlitPreventReason(GLenum target, int32_t level, const ivec3& offset,
GLenum internalFormat, const webgl::PackingInfo&,
const TexUnpackBlobDesc&,
OptionalRenderableFormatBits, bool sameColorSpace,
bool allowConversion = false,
bool allowSRGB = false, bool allow3D = false);
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 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;
bool AllowBlitSd(WebGLContext* const webgl, const GLenum target,
const int32_t level, const ivec3& offset,
const GLenum internalFormat, const webgl::PackingInfo& pi,
bool allowConversion, bool allowSRGB, bool allow3D,
bool warn) const;
bool BlitSd(const layers::SurfaceDescriptor& sd, 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, bool allowFallback = false) const;
};
} // namespace webgl
} // namespace mozilla
#endif // TEX_UNPACK_BLOB_H_