gecko-dev/gfx/layers/d3d9/ColorLayerD3D9.cpp

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Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
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* Software distributed under the License is distributed on an "AS IS" basis,
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* The Original Code is Mozilla Corporation code.
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* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
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* Contributor(s):
* Robert O'Callahan <robert@ocallahan.org>
* Bas Schouten <bschouten@mozilla.com>
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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#include "ColorLayerD3D9.h"
namespace mozilla {
namespace layers {
Layer*
ColorLayerD3D9::GetLayer()
{
return this;
}
void
ColorLayerD3D9::RenderLayer()
{
// XXX we might be able to improve performance by using
// IDirect3DDevice9::Clear
float quadTransform[4][4];
nsIntRect visibleRect = mVisibleRegion.GetBounds();
// Transform the quad to the size of the visible area.
memset(&quadTransform, 0, sizeof(quadTransform));
quadTransform[0][0] = (float)visibleRect.width;
quadTransform[1][1] = (float)visibleRect.height;
quadTransform[2][2] = 1.0f;
quadTransform[3][0] = (float)visibleRect.x;
quadTransform[3][1] = (float)visibleRect.y;
quadTransform[3][3] = 1.0f;
device()->SetVertexShaderConstantF(0, &quadTransform[0][0], 4);
device()->SetVertexShaderConstantF(4, &mTransform._11, 4);
float color[4];
// color is premultiplied, so we need to adjust all channels
color[0] = (float)(mColor.r * GetOpacity());
color[1] = (float)(mColor.g * GetOpacity());
color[2] = (float)(mColor.b * GetOpacity());
color[3] = (float)(mColor.a * GetOpacity());
device()->SetPixelShaderConstantF(0, color, 1);
mD3DManager->SetShaderMode(DeviceManagerD3D9::SOLIDCOLORLAYER);
device()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
}
} /* layers */
} /* mozilla */