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
32namespace glu
33{
34class ShaderProgram;
35class RenderContext;
36}
37
38namespace deqp
39{
40namespace gls
41{
42namespace FragmentOpUtil
43{
44
45struct 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
65class QuadRenderer
66{
67public:
68								QuadRenderer				(const glu::RenderContext& context, glu::GLSLVersion glslVersion);
69								~QuadRenderer				(void);
70
71	void						render						(const Quad& quad) const;
72
73private:
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
85struct 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
113class ReferenceQuadRenderer
114{
115public:
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
124private:
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.
146tcu::PixelBufferAccess					getMultisampleAccess(const tcu::PixelBufferAccess&			original);
147tcu::ConstPixelBufferAccess				getMultisampleAccess(const tcu::ConstPixelBufferAccess&	original);
148
149} // FragmentOpUtil
150} // gls
151} // deqp
152
153#endif // _GLSFRAGMENTOPUTIL_HPP
154