#ifndef _TCUSURFACEACCESS_HPP
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#define _TCUSURFACEACCESS_HPP
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/*-------------------------------------------------------------------------
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* drawElements Quality Program Tester Core
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* ----------------------------------------
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*
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* Copyright 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*//*!
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* \file
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* \brief Surface access class.
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*//*--------------------------------------------------------------------*/
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#include "tcuDefs.hpp"
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#include "tcuTextureUtil.hpp"
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#include "tcuPixelFormat.hpp"
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#include "tcuSurface.hpp"
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namespace tcu
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{
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inline deUint8 getColorMask (const tcu::PixelFormat& format)
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{
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return (deUint8)((format.redBits ? tcu::RGBA::RED_MASK : 0) |
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(format.greenBits ? tcu::RGBA::GREEN_MASK : 0) |
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(format.blueBits ? tcu::RGBA::BLUE_MASK : 0) |
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(format.alphaBits ? tcu::RGBA::ALPHA_MASK : 0));
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}
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inline tcu::RGBA toRGBAMasked (const tcu::Vec4& v, deUint8 mask)
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{
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return tcu::RGBA((mask&tcu::RGBA::RED_MASK) ? tcu::floatToU8(v.x()) : 0,
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(mask&tcu::RGBA::GREEN_MASK) ? tcu::floatToU8(v.y()) : 0,
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(mask&tcu::RGBA::BLUE_MASK) ? tcu::floatToU8(v.z()) : 0,
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(mask&tcu::RGBA::ALPHA_MASK) ? tcu::floatToU8(v.w()) : 0xFF); //!< \note Alpha defaults to full saturation when reading masked format
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}
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class SurfaceAccess
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{
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public:
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SurfaceAccess (tcu::Surface& surface, const tcu::PixelFormat& colorFmt);
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SurfaceAccess (tcu::Surface& surface, const tcu::PixelFormat& colorFmt, int x, int y, int width, int height);
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SurfaceAccess (const SurfaceAccess& parent, int x, int y, int width, int height);
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int getWidth (void) const { return m_width; }
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int getHeight (void) const { return m_height; }
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void setPixel (const tcu::Vec4& color, int x, int y) const;
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private:
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mutable tcu::Surface* m_surface;
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deUint8 m_colorMask;
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int m_x;
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int m_y;
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int m_width;
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int m_height;
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};
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inline void SurfaceAccess::setPixel (const tcu::Vec4& color, int x, int y) const
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{
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DE_ASSERT(de::inBounds(x, 0, m_width) && de::inBounds(y, 0, m_height));
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m_surface->setPixel(m_x+x, m_y+y, toRGBAMasked(color, m_colorMask));
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}
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} // tcu
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#endif // _TCUSURFACEACCESS_HPP
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