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      1 #ifndef _GLSFRAGMENTOPUTIL_HPP
      2 #define _GLSFRAGMENTOPUTIL_HPP
      3 /*-------------------------------------------------------------------------
      4  * drawElements Quality Program OpenGL (ES) Module
      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 Fragment operation test utilities.
     24  *//*--------------------------------------------------------------------*/
     25 
     26 #include "tcuDefs.hpp"
     27 #include "gluShaderUtil.hpp"
     28 #include "tcuVector.hpp"
     29 #include "tcuTexture.hpp"
     30 #include "rrFragmentOperations.hpp"
     31 
     32 namespace glu
     33 {
     34 class ShaderProgram;
     35 class RenderContext;
     36 }
     37 
     38 namespace deqp
     39 {
     40 namespace gls
     41 {
     42 namespace FragmentOpUtil
     43 {
     44 
     45 struct Quad
     46 {
     47 	tcu::Vec2		posA;
     48 	tcu::Vec2		posB;
     49 
     50 	// Normalized device coordinates (range [-1, 1]).
     51 	// In order (A.x, A.y), (A.x, B.y), (B.x, A.y), (B.x, B.y)
     52 	tcu::Vec4		color[4];
     53 	tcu::Vec4		color1[4];
     54 	float			depth[4];
     55 
     56 	Quad (void)
     57 		: posA(-1.0f, -1.0f)
     58 		, posB( 1.0f,  1.0f)
     59 	{
     60 		for (int i = 0; i < DE_LENGTH_OF_ARRAY(depth); i++)
     61 			depth[i] = 0.0f;
     62 	}
     63 };
     64 
     65 class QuadRenderer
     66 {
     67 public:
     68 								QuadRenderer				(const glu::RenderContext& context, glu::GLSLVersion glslVersion);
     69 								~QuadRenderer				(void);
     70 
     71 	void						render						(const Quad& quad) const;
     72 
     73 private:
     74 								QuadRenderer				(const QuadRenderer& other); // Not allowed!
     75 	QuadRenderer&				operator=					(const QuadRenderer& other); // Not allowed!
     76 
     77 	const glu::RenderContext&	m_context;
     78 	glu::ShaderProgram*			m_program;
     79 	int							m_positionLoc;
     80 	int							m_colorLoc;
     81 	int							m_color1Loc;
     82 	const bool					m_blendFuncExt;
     83 };
     84 
     85 struct IntegerQuad
     86 {
     87 	tcu::IVec2	posA;
     88 	tcu::IVec2	posB;
     89 
     90 	// Viewport coordinates (depth in range [0, 1]).
     91 	// In order (A.x, A.y), (A.x, B.y), (B.x, A.y), (B.x, B.y)
     92 	tcu::Vec4	color[4];
     93 	tcu::Vec4	color1[4];
     94 	float		depth[4];
     95 
     96 	IntegerQuad (int windowWidth, int windowHeight)
     97 		: posA(0,				0)
     98 		, posB(windowWidth-1,	windowHeight-1)
     99 	{
    100 		for (int i = 0; i < DE_LENGTH_OF_ARRAY(depth); i++)
    101 			depth[i] = 0.0f;
    102 	}
    103 
    104 	IntegerQuad (void)
    105 		: posA(0, 0)
    106 		, posB(1, 1)
    107 	{
    108 		for (int i = 0; i < DE_LENGTH_OF_ARRAY(depth); i++)
    109 			depth[i] = 0.0f;
    110 	}
    111 };
    112 
    113 class ReferenceQuadRenderer
    114 {
    115 public:
    116 								ReferenceQuadRenderer	(void);
    117 
    118 	void						render					(const tcu::PixelBufferAccess&			colorBuffer,
    119 														 const tcu::PixelBufferAccess&			depthBuffer,
    120 														 const tcu::PixelBufferAccess&			stencilBuffer,
    121 														 const IntegerQuad&						quad,
    122 														 const rr::FragmentOperationState&		state);
    123 
    124 private:
    125 	enum
    126 	{
    127 		MAX_FRAGMENT_BUFFER_SIZE = 1024
    128 	};
    129 
    130 	void						flushFragmentBuffer (const rr::MultisamplePixelBufferAccess&	colorBuffer,
    131 													 const rr::MultisamplePixelBufferAccess&	depthBuffer,
    132 													 const rr::MultisamplePixelBufferAccess&	stencilBuffer,
    133 													 rr::FaceType								faceType,
    134 													 const rr::FragmentOperationState&			state);
    135 
    136 	rr::Fragment				m_fragmentBuffer[MAX_FRAGMENT_BUFFER_SIZE];
    137 	float						m_fragmentDepths[MAX_FRAGMENT_BUFFER_SIZE];
    138 	int							m_fragmentBufferSize;
    139 
    140 	rr::FragmentProcessor		m_fragmentProcessor;
    141 };
    142 
    143 
    144 // These functions take a normally-indexed 2d pixel buffer and return a pixel buffer access
    145 // that indexes the same memory area, but using the multisample indexing convention.
    146 tcu::PixelBufferAccess					getMultisampleAccess(const tcu::PixelBufferAccess&			original);
    147 tcu::ConstPixelBufferAccess				getMultisampleAccess(const tcu::ConstPixelBufferAccess&	original);
    148 
    149 } // FragmentOpUtil
    150 } // gls
    151 } // deqp
    152 
    153 #endif // _GLSFRAGMENTOPUTIL_HPP
    154