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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 
     48 	int										getNumSamples 		(void) const;
     49 
     50 	const MultisamplePixelBufferAccess&		getColorBuffer		(int ndx) const	{ DE_ASSERT(de::inRange(ndx, 0, m_numColorBuffers));	return m_colorBuffers[ndx];	}
     51 	int										getNumColorBuffers	(void) const	{ return m_numColorBuffers; }
     52 	const MultisamplePixelBufferAccess&		getStencilBuffer	(void) const	{														return m_stencilBuffer;		}
     53 	const MultisamplePixelBufferAccess&		getDepthBuffer		(void) const	{														return m_depthBuffer;		}
     54 
     55 private:
     56 	MultisamplePixelBufferAccess			m_colorBuffers[MAX_COLOR_BUFFERS];
     57 	const int								m_numColorBuffers;
     58 	const MultisamplePixelBufferAccess		m_depthBuffer;
     59 	const MultisamplePixelBufferAccess		m_stencilBuffer;
     60 } DE_WARN_UNUSED_TYPE;
     61 
     62 struct Program
     63 {
     64 	Program (const VertexShader* vertexShader_, const FragmentShader* fragmentShader_, const GeometryShader* geometryShader_ = DE_NULL)
     65 		: vertexShader		(vertexShader_)
     66 		, fragmentShader	(fragmentShader_)
     67 		, geometryShader	(geometryShader_)
     68 	{
     69 	}
     70 
     71 	const VertexShader*			vertexShader;
     72 	const FragmentShader*		fragmentShader;
     73 	const GeometryShader*		geometryShader;
     74 } DE_WARN_UNUSED_TYPE;
     75 
     76 struct DrawIndices
     77 {
     78 						DrawIndices		(const deUint32*, int baseVertex = 0);
     79 						DrawIndices		(const deUint16*, int baseVertex = 0);
     80 						DrawIndices		(const deUint8*, int baseVertex = 0);
     81 						DrawIndices		(const void* ptr, IndexType type, int baseVertex = 0);
     82 
     83 	const void* const	indices;
     84 	const IndexType		indexType;
     85 	const int			baseVertex;
     86 } DE_WARN_UNUSED_TYPE;
     87 
     88 class PrimitiveList
     89 {
     90 public:
     91 							PrimitiveList		(PrimitiveType primitiveType, int numElements, const int firstElement);		// !< primitive list for drawArrays-like call
     92 							PrimitiveList		(PrimitiveType primitiveType, int numElements, const DrawIndices& indices);	// !< primitive list for drawElements-like call
     93 
     94 	size_t					getIndex			(size_t elementNdx) const;
     95 	bool					isRestartIndex		(size_t elementNdx, deUint32 restartIndex) const;
     96 
     97 	inline size_t			getNumElements		(void) const	{ return m_numElements;		}
     98 	inline PrimitiveType	getPrimitiveType	(void) const	{ return m_primitiveType;	}
     99 	inline IndexType		getIndexType		(void) const	{ return m_indexType;		}
    100 
    101 private:
    102 	const PrimitiveType		m_primitiveType;
    103 	const size_t			m_numElements;
    104 	const void* const		m_indices;			// !< if indices is NULL, indices is interpreted as [first (== baseVertex) + 0, first + 1, first + 2, ...]
    105 	const IndexType			m_indexType;
    106 	const int				m_baseVertex;
    107 };
    108 
    109 class DrawCommand
    110 {
    111 public:
    112 	DrawCommand (const RenderState& state_, const RenderTarget& renderTarget_, const Program& program_, int numVertexAttribs_, const VertexAttrib* vertexAttribs_, const PrimitiveList& primitives_)
    113 		: state				(state_)
    114 		, renderTarget		(renderTarget_)
    115 		, program			(program_)
    116 		, numVertexAttribs	(numVertexAttribs_)
    117 		, vertexAttribs		(vertexAttribs_)
    118 		, primitives		(primitives_)
    119 	{
    120 	}
    121 
    122 	const RenderState&			state;
    123 	const RenderTarget&			renderTarget;
    124 	const Program&				program;
    125 
    126 	const int					numVertexAttribs;
    127 	const VertexAttrib* const	vertexAttribs;
    128 
    129 	const PrimitiveList&		primitives;
    130 } DE_WARN_UNUSED_TYPE;
    131 
    132 class Renderer
    133 {
    134 public:
    135 					Renderer		(void);
    136 					~Renderer		(void);
    137 
    138 	void			draw			(const DrawCommand& command) const;
    139 	void			drawInstanced	(const DrawCommand& command, int numInstances) const;
    140 } DE_WARN_UNUSED_TYPE;
    141 
    142 } // rr
    143 
    144 #endif // _RRRENDERER_HPP
    145