/*-------------------------------------------------------------------------
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* drawElements Quality Program OpenGL ES Utilities
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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 OpenGL ES Pixel Transfer Utilities.
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*//*--------------------------------------------------------------------*/
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#include "gluPixelTransfer.hpp"
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#include "gluTextureUtil.hpp"
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#include "gluRenderContext.hpp"
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#include "glwEnums.hpp"
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#include "glwFunctions.hpp"
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#include "tcuTexture.hpp"
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#include "tcuSurface.hpp"
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#include "deMemory.h"
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namespace glu
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{
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static inline int getTransferAlignment (tcu::TextureFormat format)
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{
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int pixelSize = format.getPixelSize();
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if (deIsPowerOfTwo32(pixelSize))
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return de::min(pixelSize, 8);
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else
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return 1;
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}
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/*--------------------------------------------------------------------*//*!
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* \brief Read pixels to pixel buffer access.
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* \note Stride must be default stride for format.
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*//*--------------------------------------------------------------------*/
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void readPixels (const RenderContext& context, int x, int y, const tcu::PixelBufferAccess& dst)
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{
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const glw::Functions& gl = context.getFunctions();
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TCU_CHECK_INTERNAL(dst.getDepth() == 1);
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TCU_CHECK_INTERNAL(dst.getRowPitch() == dst.getFormat().getPixelSize()*dst.getWidth());
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int width = dst.getWidth();
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int height = dst.getHeight();
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TransferFormat format = getTransferFormat(dst.getFormat());
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gl.pixelStorei(GL_PACK_ALIGNMENT, getTransferAlignment(dst.getFormat()));
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gl.readPixels(x, y, width, height, format.format, format.dataType, dst.getDataPtr());
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}
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/*--------------------------------------------------------------------*//*!
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* \brief Upload pixels from pixel buffer access.
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* \note Stride must be default stride for format.
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*//*--------------------------------------------------------------------*/
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void texImage2D (const RenderContext& context, deUint32 target, int level, deUint32 internalFormat, const tcu::ConstPixelBufferAccess& src)
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{
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const glw::Functions& gl = context.getFunctions();
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TCU_CHECK_INTERNAL(src.getDepth() == 1);
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TCU_CHECK_INTERNAL(src.getRowPitch() == src.getFormat().getPixelSize()*src.getWidth());
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int width = src.getWidth();
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int height = src.getHeight();
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TransferFormat format = getTransferFormat(src.getFormat());
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gl.pixelStorei(GL_UNPACK_ALIGNMENT, getTransferAlignment(src.getFormat()));
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gl.texImage2D(target, level, internalFormat, width, height, 0, format.format, format.dataType, src.getDataPtr());
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}
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/*--------------------------------------------------------------------*//*!
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* \brief Upload pixels from pixel buffer access.
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* \note Stride must be default stride for format.
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*//*--------------------------------------------------------------------*/
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void texImage3D (const RenderContext& context, deUint32 target, int level, deUint32 internalFormat, const tcu::ConstPixelBufferAccess& src)
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{
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const glw::Functions& gl = context.getFunctions();
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TCU_CHECK_INTERNAL(src.getRowPitch() == src.getFormat().getPixelSize()*src.getWidth());
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TCU_CHECK_INTERNAL(src.getSlicePitch() == src.getRowPitch()*src.getHeight());
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int width = src.getWidth();
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int height = src.getHeight();
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int depth = src.getDepth();
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TransferFormat format = getTransferFormat(src.getFormat());
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gl.pixelStorei(GL_UNPACK_ALIGNMENT, getTransferAlignment(src.getFormat()));
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gl.texImage3D(target, level, internalFormat, width, height, depth, 0, format.format, format.dataType, src.getDataPtr());
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}
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/*--------------------------------------------------------------------*//*!
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* \brief Upload pixels from pixel buffer access.
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* \note Stride must be default stride for format.
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*//*--------------------------------------------------------------------*/
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void texSubImage2D (const RenderContext& context, deUint32 target, int level, int x, int y, const tcu::ConstPixelBufferAccess& src)
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{
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const glw::Functions& gl = context.getFunctions();
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TCU_CHECK_INTERNAL(src.getDepth() == 1);
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TCU_CHECK_INTERNAL(src.getRowPitch() == src.getFormat().getPixelSize()*src.getWidth());
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int width = src.getWidth();
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int height = src.getHeight();
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TransferFormat format = getTransferFormat(src.getFormat());
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gl.pixelStorei(GL_UNPACK_ALIGNMENT, getTransferAlignment(src.getFormat()));
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gl.texSubImage2D(target, level, x, y, width, height, format.format, format.dataType, src.getDataPtr());
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}
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/*--------------------------------------------------------------------*//*!
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* \brief Upload pixels from pixel buffer access.
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* \note Stride must be default stride for format.
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*//*--------------------------------------------------------------------*/
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void texSubImage3D (const RenderContext& context, deUint32 target, int level, int x, int y, int z, const tcu::ConstPixelBufferAccess& src)
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{
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const glw::Functions& gl = context.getFunctions();
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TCU_CHECK_INTERNAL(src.getRowPitch() == src.getFormat().getPixelSize()*src.getWidth());
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TCU_CHECK_INTERNAL(src.getSlicePitch() == src.getRowPitch()*src.getHeight());
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int width = src.getWidth();
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int height = src.getHeight();
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int depth = src.getDepth();
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TransferFormat format = getTransferFormat(src.getFormat());
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gl.pixelStorei(GL_UNPACK_ALIGNMENT, getTransferAlignment(src.getFormat()));
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gl.texSubImage3D(target, level, x, y, z, width, height, depth, format.format, format.dataType, src.getDataPtr());
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}
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} // glu
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