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      1 #ifndef _GLUTEXTUREUTIL_HPP
      2 #define _GLUTEXTUREUTIL_HPP
      3 /*-------------------------------------------------------------------------
      4  * drawElements Quality Program OpenGL ES Utilities
      5  * ------------------------------------------------
      6  *
      7  * Copyright 2014 The Android Open Source Project
      8  *
      9  * Licensed under the Apache License, Version 2.0 (the "License");
     10  * you may not use this file except in compliance with the License.
     11  * You may obtain a copy of the License at
     12  *
     13  *      http://www.apache.org/licenses/LICENSE-2.0
     14  *
     15  * Unless required by applicable law or agreed to in writing, software
     16  * distributed under the License is distributed on an "AS IS" BASIS,
     17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     18  * See the License for the specific language governing permissions and
     19  * limitations under the License.
     20  *
     21  *//*!
     22  * \file
     23  * \brief Texture format utilities.
     24  *//*--------------------------------------------------------------------*/
     25 
     26 #include "gluDefs.hpp"
     27 #include "tcuTexture.hpp"
     28 #include "tcuCompressedTexture.hpp"
     29 #include "gluShaderUtil.hpp"
     30 #include "deInt32.h"
     31 
     32 namespace glu
     33 {
     34 
     35 class RenderContext;
     36 class ContextInfo;
     37 class TextureBuffer;
     38 
     39 /*--------------------------------------------------------------------*//*!
     40  * \brief GL pixel transfer format.
     41  *//*--------------------------------------------------------------------*/
     42 struct TransferFormat
     43 {
     44 	deUint32	format;		//!< Pixel format.
     45 	deUint32	dataType;	//!< Data type.
     46 
     47 	TransferFormat (void)
     48 		: format	(0)
     49 		, dataType	(0)
     50 	{
     51 	}
     52 
     53 	TransferFormat (deUint32 format_, deUint32 dataType_)
     54 		: format	(format_)
     55 		, dataType	(dataType_)
     56 	{
     57 	}
     58 } DE_WARN_UNUSED_TYPE;
     59 
     60 tcu::TextureFormat				mapGLTransferFormat					(deUint32 format, deUint32 dataType);
     61 tcu::TextureFormat				mapGLInternalFormat					(deUint32 internalFormat);
     62 tcu::CompressedTexFormat		mapGLCompressedTexFormat			(deUint32 format);
     63 bool							isGLInternalColorFormatFilterable	(deUint32 internalFormat);
     64 tcu::Sampler					mapGLSampler						(deUint32 wrapS, deUint32 minFilter, deUint32 magFilter);
     65 tcu::Sampler					mapGLSampler						(deUint32 wrapS, deUint32 wrapT, deUint32 minFilter, deUint32 magFilter);
     66 tcu::Sampler					mapGLSampler						(deUint32 wrapS, deUint32 wrapT, deUint32 wrapR, deUint32 minFilter, deUint32 magFilter);
     67 tcu::Sampler::CompareMode		mapGLCompareFunc					(deUint32 mode);
     68 
     69 TransferFormat					getTransferFormat					(tcu::TextureFormat format);
     70 deUint32						getInternalFormat					(tcu::TextureFormat format);
     71 deUint32						getGLFormat							(tcu::CompressedTexFormat format);
     72 
     73 deUint32						getGLWrapMode						(tcu::Sampler::WrapMode wrapMode);
     74 deUint32						getGLFilterMode						(tcu::Sampler::FilterMode filterMode);
     75 deUint32						getGLCompareFunc					(tcu::Sampler::CompareMode compareMode);
     76 
     77 deUint32						getGLCubeFace						(tcu::CubeFace face);
     78 tcu::CubeFace					getCubeFaceFromGL					(deUint32 face);
     79 
     80 DataType						getSampler1DType					(tcu::TextureFormat format);
     81 DataType						getSampler2DType					(tcu::TextureFormat format);
     82 DataType						getSamplerCubeType					(tcu::TextureFormat format);
     83 DataType						getSampler2DArrayType				(tcu::TextureFormat format);
     84 DataType						getSampler3DType					(tcu::TextureFormat format);
     85 DataType						getSamplerCubeArrayType				(tcu::TextureFormat format);
     86 
     87 bool							isSizedFormatColorRenderable		(const RenderContext& renderCtx, const ContextInfo& contextInfo, deUint32 sizedFormat);
     88 bool							isCompressedFormat					(deUint32 internalFormat);
     89 
     90 const tcu::IVec2				(&getDefaultGatherOffsets			(void))[4];
     91 
     92 tcu::PixelBufferAccess			getTextureBufferEffectiveRefTexture	(TextureBuffer& buffer, int maxTextureBufferSize);
     93 tcu::ConstPixelBufferAccess		getTextureBufferEffectiveRefTexture	(const TextureBuffer& buffer, int maxTextureBufferSize);
     94 
     95 } // glu
     96 
     97 #endif // _GLUTEXTUREUTIL_HPP
     98