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      1 #ifndef _RRRENDERER_HPP
      2 #define _RRRENDERER_HPP
      3 /*-------------------------------------------------------------------------
      4  * drawElements Quality Program Reference Renderer
      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 Reference renderer interface.
     24  *//*--------------------------------------------------------------------*/
     25 
     26 #include "rrDefs.hpp"
     27 #include "rrShaders.hpp"
     28 #include "rrRenderState.hpp"
     29 #include "rrPrimitiveTypes.hpp"
     30 #include "rrMultisamplePixelBufferAccess.hpp"
     31 #include "tcuTexture.hpp"
     32 
     33 namespace rr
     34 {
     35 
     36 class RenderTarget
     37 {
     38 public:
     39 	enum
     40 	{
     41 		MAX_COLOR_BUFFERS	= 4
     42 	};
     43 
     44 	RenderTarget (const MultisamplePixelBufferAccess& colorMultisampleBuffer,
     45 				  const MultisamplePixelBufferAccess& depthMultisampleBuffer	= MultisamplePixelBufferAccess(),
     46 				  const MultisamplePixelBufferAccess& stencilMultisampleBuffer	= MultisamplePixelBufferAccess())
     47 		: numColorBuffers	(1)
     48 		, depthBuffer		(depthMultisampleBuffer)
     49 		, stencilBuffer		(stencilMultisampleBuffer)
     50 	{
     51 		colorBuffers[0] = colorMultisampleBuffer;
     52 	}
     53 
     54 	MultisamplePixelBufferAccess			colorBuffers[MAX_COLOR_BUFFERS];
     55 	const int								numColorBuffers;
     56 	const MultisamplePixelBufferAccess		depthBuffer;
     57 	const MultisamplePixelBufferAccess		stencilBuffer;
     58 };
     59 
     60 struct Program
     61 {
     62 	Program (const VertexShader* vertexShader_, const FragmentShader* fragmentShader_, const GeometryShader* geometryShader_ = DE_NULL)
     63 		: vertexShader		(vertexShader_)
     64 		, fragmentShader	(fragmentShader_)
     65 		, geometryShader	(geometryShader_)
     66 	{
     67 	}
     68 
     69 	const VertexShader*			vertexShader;
     70 	const FragmentShader*		fragmentShader;
     71 	const GeometryShader*		geometryShader;
     72 };
     73 
     74 struct DrawIndices
     75 {
     76 						DrawIndices		(const deUint32*, int baseVertex = 0);
     77 						DrawIndices		(const deUint16*, int baseVertex = 0);
     78 						DrawIndices		(const deUint8*, int baseVertex = 0);
     79 						DrawIndices		(const void* ptr, IndexType type, int baseVertex = 0);
     80 
     81 	const void* const	indices;
     82 	const IndexType		indexType;
     83 	const int			baseVertex;
     84 };
     85 
     86 class PrimitiveList
     87 {
     88 public:
     89 							PrimitiveList		(PrimitiveType primitiveType, int numElements, const int firstElement);		// !< primitive list for drawArrays-like call
     90 							PrimitiveList		(PrimitiveType primitiveType, int numElements, const DrawIndices& indices);	// !< primitive list for drawElements-like call
     91 
     92 	size_t					getIndex			(size_t elementNdx) const;
     93 	bool					isRestartIndex		(size_t elementNdx, deUint32 restartIndex) const;
     94 
     95 	inline size_t			getNumElements		(void) const	{ return m_numElements;		}
     96 	inline PrimitiveType	getPrimitiveType	(void) const	{ return m_primitiveType;	}
     97 	inline IndexType		getIndexType		(void) const	{ return m_indexType;		}
     98 
     99 private:
    100 	const PrimitiveType		m_primitiveType;
    101 	const size_t			m_numElements;
    102 	const void* const		m_indices;			// !< if indices is NULL, indices is interpreted as [first (== baseVertex) + 0, first + 1, first + 2, ...]
    103 	const IndexType			m_indexType;
    104 	const int				m_baseVertex;
    105 };
    106 
    107 class DrawCommand
    108 {
    109 public:
    110 	DrawCommand (const RenderState& state_, const RenderTarget& renderTarget_, const Program& program_, int numVertexAttribs_, const VertexAttrib* vertexAttribs_, const PrimitiveList& primitives_)
    111 		: state				(state_)
    112 		, renderTarget		(renderTarget_)
    113 		, program			(program_)
    114 		, numVertexAttribs	(numVertexAttribs_)
    115 		, vertexAttribs		(vertexAttribs_)
    116 		, primitives		(primitives_)
    117 	{
    118 	}
    119 
    120 	const RenderState&			state;
    121 	const RenderTarget&			renderTarget;
    122 	const Program&				program;
    123 
    124 	const int					numVertexAttribs;
    125 	const VertexAttrib* const	vertexAttribs;
    126 
    127 	const PrimitiveList&		primitives;
    128 };
    129 
    130 class Renderer
    131 {
    132 public:
    133 					Renderer		(void);
    134 					~Renderer		(void);
    135 
    136 	void			draw			(const DrawCommand& command) const;
    137 	void			drawInstanced	(const DrawCommand& command, int numInstances) const;
    138 };
    139 
    140 } // rr
    141 
    142 #endif // _RRRENDERER_HPP
    143