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/*
* Copyright 2009 Nicolai Hähnle <nhaehnle@gmail.com>
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR 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_COMPILER_H
#define RADEON_COMPILER_H
#include "main/mtypes.h"
#include "shader/prog_instruction.h"
#define R300_PFS_MAX_ALU_INST 64
#define R300_PFS_MAX_TEX_INST 32
#define R300_PFS_MAX_TEX_INDIRECT 4
#define R300_PFS_NUM_TEMP_REGS 32
#define R300_PFS_NUM_CONST_REGS 32
#define R500_PFS_MAX_INST 512
#define R500_PFS_NUM_TEMP_REGS 128
#define R500_PFS_NUM_CONST_REGS 256
#define STATE_R300_WINDOW_DIMENSION (STATE_INTERNAL_DRIVER+0)
#define STATE_R300_TEXRECT_FACTOR (STATE_INTERNAL_DRIVER+1)
/**
* Stores state that influences the compilation of a fragment program.
*/
struct r300_fragment_program_external_state {
struct {
/**
* If the sampler is used as a shadow sampler,
* this field is:
* 0 - GL_LUMINANCE
* 1 - GL_INTENSITY
* 2 - GL_ALPHA
* depending on the depth texture mode.
*/
GLuint depth_texture_mode : 2;
/**
* If the sampler is used as a shadow sampler,
* this field is (texture_compare_func - GL_NEVER).
* [e.g. if compare function is GL_LEQUAL, this field is 3]
*
* Otherwise, this field is 0.
*/
GLuint texture_compare_func : 3;
} unit[16];
};
struct r300_fragment_program_node {
int tex_offset; /**< first tex instruction */
int tex_end; /**< last tex instruction, relative to tex_offset */
int alu_offset; /**< first ALU instruction */
int alu_end; /**< last ALU instruction, relative to alu_offset */
int flags;
};
/**
* Stores an R300 fragment program in its compiled-to-hardware form.
*/
struct r300_fragment_program_code {
struct {
int length; /**< total # of texture instructions used */
GLuint inst[R300_PFS_MAX_TEX_INST];
} tex;
struct {
int length; /**< total # of ALU instructions used */
struct {
GLuint inst0;
GLuint inst1;
GLuint inst2;
GLuint inst3;
} inst[R300_PFS_MAX_ALU_INST];
} alu;
struct r300_fragment_program_node node[4];
int cur_node;
int first_node_has_tex;
/**
* Remember which program register a given hardware constant
* belongs to.
*/
struct prog_src_register constant[R300_PFS_NUM_CONST_REGS];
int const_nr;
int max_temp_idx;
};
struct r500_fragment_program_code {
struct {
GLuint inst0;
GLuint inst1;
GLuint inst2;
GLuint inst3;
GLuint inst4;
GLuint inst5;
} inst[R500_PFS_MAX_INST];
int inst_offset;
int inst_end;
/**
* Remember which program register a given hardware constant
* belongs to.
*/
struct prog_src_register constant[R500_PFS_NUM_CONST_REGS];
int const_nr;
int max_temp_idx;
};
struct rX00_fragment_program_code {
union {
struct r300_fragment_program_code r300;
struct r500_fragment_program_code r500;
} code;
GLboolean writes_depth;
/* attribute that we are sending the WPOS in */
gl_frag_attrib wpos_attr;
/* attribute that we are sending the fog coordinate in */
gl_frag_attrib fog_attr;
};
struct r300_fragment_program_compiler {
GLcontext * ctx;
struct rX00_fragment_program_code *code;
struct gl_program *program;
struct r300_fragment_program_external_state state;
GLboolean is_r500;
GLboolean debug;
};
GLboolean r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c);
#endif /* RADEON_COMPILER_H */
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