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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_H_
#define __RADEON_PROGRAM_H_
#include "main/glheader.h"
#include "main/macros.h"
#include "main/enums.h"
#include "shader/program.h"
#include "shader/prog_instruction.h"
enum {
CLAUSE_MIXED = 0,
CLAUSE_ALU,
CLAUSE_TEX
};
enum {
PROGRAM_BUILTIN = PROGRAM_FILE_MAX /**< not a real register, but a special swizzle constant */
};
enum {
OPCODE_REPL_ALPHA = MAX_OPCODE /**< used in paired instructions */
};
#define SWIZZLE_0000 MAKE_SWIZZLE4(SWIZZLE_ZERO, SWIZZLE_ZERO, SWIZZLE_ZERO, SWIZZLE_ZERO)
#define SWIZZLE_1111 MAKE_SWIZZLE4(SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE)
static inline GLuint get_swz(GLuint swz, GLuint idx)
{
if (idx & 0x4)
return idx;
return GET_SWZ(swz, idx);
}
static inline GLuint combine_swizzles4(GLuint src, GLuint swz_x, GLuint swz_y, GLuint swz_z, GLuint swz_w)
{
GLuint ret = 0;
ret |= get_swz(src, swz_x);
ret |= get_swz(src, swz_y) << 3;
ret |= get_swz(src, swz_z) << 6;
ret |= get_swz(src, swz_w) << 9;
return ret;
}
static inline GLuint combine_swizzles(GLuint src, GLuint swz)
{
GLuint ret = 0;
ret |= get_swz(src, GET_SWZ(swz, SWIZZLE_X));
ret |= get_swz(src, GET_SWZ(swz, SWIZZLE_Y)) << 3;
ret |= get_swz(src, GET_SWZ(swz, SWIZZLE_Z)) << 6;
ret |= get_swz(src, GET_SWZ(swz, SWIZZLE_W)) << 9;
return ret;
}
/**
* Transformation context that is passed to local transformations.
*
* Care must be taken with some operations during transformation,
* e.g. finding new temporary registers must use @ref radeonFindFreeTemporary
*/
struct radeon_transform_context {
GLcontext *Ctx;
struct gl_program *Program;
struct prog_instruction *OldInstructions;
GLuint OldNumInstructions;
};
/**
* A transformation that can be passed to \ref radeonLocalTransform.
*
* The function will be called once for each instruction.
* It has to either emit the appropriate transformed code for the instruction
* and return GL_TRUE, or return GL_FALSE if it doesn't understand the
* instruction.
*
* The function gets passed the userData as last parameter.
*/
struct radeon_program_transformation {
GLboolean (*function)(
struct radeon_transform_context*,
struct prog_instruction*,
void*);
void *userData;
};
void radeonLocalTransform(
GLcontext* ctx,
struct gl_program *program,
int num_transformations,
struct radeon_program_transformation* transformations);
/**
* Find a usable free temporary register during program transformation
*/
GLint radeonFindFreeTemporary(struct radeon_transform_context *ctx);
struct prog_instruction *radeonAppendInstructions(struct gl_program *program, int count);
#endif
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