/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 MOZILLA_GFX_RENDERTEXTUREHOSTSWGL_H
#define MOZILLA_GFX_RENDERTEXTUREHOSTSWGL_H
#include "GLTypes.h"
#include "RenderTextureHost.h"
namespace mozilla {
namespace wr {
class RenderTextureHostSWGL :
public RenderTextureHost {
public:
RenderTextureHostSWGL() {}
wr::WrExternalImage LockSWGL(uint8_t aChannelIndex,
void* aContext,
RenderCompositor* aCompositor) override;
void UnlockSWGL() override;
RenderTextureHostSWGL* AsRenderTextureHostSWGL() override {
return this; }
virtual size_t GetPlaneCount()
const = 0;
virtual gfx::ColorDepth GetColorDepth()
const {
return gfx::ColorDepth::COLOR_8;
}
struct PlaneInfo {
explicit PlaneInfo(GLuint aTexture) : mTexture(aTexture) {}
GLuint mTexture = 0;
void* mData = nullptr;
int32_t mStride = 0;
gfx::IntSize mSize;
};
virtual bool MapPlane(RenderCompositor* aCompositor, uint8_t aChannelIndex,
PlaneInfo& aPlaneInfo) = 0;
virtual void UnmapPlanes() = 0;
// Lock this texture host as an attached external image for a SWGL compositor
// surface. See swgl_bindings.rs for a description of the resulting
// WrSWGLCompositeSurfaceInfo. This is paired with a call to UnlockSWGL when
// composition is done.
bool LockSWGLCompositeSurface(
void* aContext,
wr::SWGLCompositeSurfaceInfo* aInfo);
size_t BytesFromPlanes() {
NS_ASSERTION(mPlanes.size(),
"Can't compute bytes without any planes");
size_t bytes = 0;
for (
auto& plane : mPlanes) {
bytes += plane.mStride * plane.mSize.height;
}
return bytes;
}
protected:
bool mLocked =
false;
void* mContext = nullptr;
std::vector<PlaneInfo> mPlanes;
bool SetContext(
void* aContext);
bool UpdatePlanes(RenderCompositor* aCompositor);
void CleanupPlanes();
virtual ~RenderTextureHostSWGL();
};
}
// namespace wr
}
// namespace mozilla
#endif // MOZILLA_GFX_RENDERTEXTUREHOSTSWGL_H
