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/*
* Copyright (C) 2008 Nicolai Haehnle.
*
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef __RADEON_PROGRAM_PAIR_H_
#define __RADEON_PROGRAM_PAIR_H_
#include "radeon_program.h"
/**
* Represents a paired instruction, as found in R300 and R500
* fragment programs.
*/
struct radeon_pair_instruction_source {
GLuint Index:8;
GLuint Constant:1;
GLuint Used:1;
};
struct radeon_pair_instruction_rgb {
GLuint Opcode:8;
GLuint DestIndex:8;
GLuint WriteMask:3;
GLuint OutputWriteMask:3;
GLuint Saturate:1;
struct radeon_pair_instruction_source Src[3];
struct {
GLuint Source:2;
GLuint Swizzle:9;
GLuint Abs:1;
GLuint Negate:1;
} Arg[3];
};
struct radeon_pair_instruction_alpha {
GLuint Opcode:8;
GLuint DestIndex:8;
GLuint WriteMask:1;
GLuint OutputWriteMask:1;
GLuint DepthWriteMask:1;
GLuint Saturate:1;
struct radeon_pair_instruction_source Src[3];
struct {
GLuint Source:2;
GLuint Swizzle:3;
GLuint Abs:1;
GLuint Negate:1;
} Arg[3];
};
struct radeon_pair_instruction {
struct radeon_pair_instruction_rgb RGB;
struct radeon_pair_instruction_alpha Alpha;
};
/**
*
*/
struct radeon_pair_handler {
/**
* Fill in the proper hardware index for the given constant register.
*
* @return GL_FALSE on error.
*/
GLboolean (*EmitConst)(void*, GLuint file, GLuint index, GLuint *hwindex);
/**
* Write a paired instruction to the hardware.
*
* @return GL_FALSE on error.
*/
GLboolean (*EmitPaired)(void*, struct radeon_pair_instruction*);
/**
* Write a texture instruction to the hardware.
* Register indices have already been rewritten to the allocated
* hardware register numbers.
*
* @return GL_FALSE on error.
*/
GLboolean (*EmitTex)(void*, struct prog_instruction*);
/**
* Called before a block of contiguous, independent texture
* instructions is emitted.
*/
GLboolean (*BeginTexBlock)(void*);
GLuint MaxHwTemps;
};
GLboolean radeonPairProgram(GLcontext *ctx, struct gl_program *program,
const struct radeon_pair_handler*, void *userdata);
void radeonPrintPairInstruction(struct radeon_pair_instruction *inst);
#endif /* __RADEON_PROGRAM_PAIR_H_ */
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