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/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
* Joakim Sindholt <opensource@zhasha.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 R300_FS_INLINES_H
#define R300_FS_INLINES_H
#include "tgsi/tgsi_parse.h"
#include "r300_context.h"
#include "r300_debug.h"
#include "r300_reg.h"
#include "r300_screen.h"
#include "r300_shader_inlines.h"
/* Temporary struct used to hold assembly state while putting together
* fragment programs. */
struct r300_fs_asm {
/* Pipe context. */
struct r300_context* r300;
/* Number of colors. */
unsigned color_count;
/* Number of texcoords. */
unsigned tex_count;
/* Offset for temporary registers. Inputs and temporaries have no
* distinguishing markings, so inputs start at 0 and the first usable
* temporary register is after all inputs. */
unsigned temp_offset;
/* Number of requested temporary registers. */
unsigned temp_count;
/* Offset for immediate constants. Neither R300 nor R500 can do four
* inline constants per source, so instead we copy immediates into the
* constant buffer. */
unsigned imm_offset;
/* Number of immediate constants. */
unsigned imm_count;
/* Are depth writes enabled? */
boolean writes_depth;
/* Depth write offset. This is the TGSI output that corresponds to
* depth writes. */
unsigned depth_output;
};
static INLINE void r300_fs_declare(struct r300_fs_asm* assembler,
struct tgsi_full_declaration* decl)
{
switch (decl->Declaration.File) {
case TGSI_FILE_INPUT:
switch (decl->Semantic.SemanticName) {
case TGSI_SEMANTIC_COLOR:
assembler->color_count++;
break;
case TGSI_SEMANTIC_FOG:
case TGSI_SEMANTIC_GENERIC:
assembler->tex_count++;
break;
default:
debug_printf("r300: fs: Bad semantic declaration %d\n",
decl->Semantic.SemanticName);
break;
}
break;
case TGSI_FILE_OUTPUT:
/* Depth write. Mark the position of the output so we can
* identify it later. */
if (decl->Semantic.SemanticName == TGSI_SEMANTIC_POSITION) {
assembler->depth_output = decl->DeclarationRange.First;
}
break;
case TGSI_FILE_CONSTANT:
break;
case TGSI_FILE_TEMPORARY:
assembler->temp_count++;
break;
default:
debug_printf("r300: fs: Bad file %d\n", decl->Declaration.File);
break;
}
assembler->temp_offset = assembler->color_count + assembler->tex_count;
}
static INLINE unsigned r300_fs_src(struct r300_fs_asm* assembler,
struct tgsi_src_register* src)
{
switch (src->File) {
case TGSI_FILE_NULL:
return 0;
case TGSI_FILE_INPUT:
/* XXX may be wrong */
return src->Index;
break;
case TGSI_FILE_TEMPORARY:
return src->Index + assembler->temp_offset;
break;
case TGSI_FILE_IMMEDIATE:
return (src->Index + assembler->imm_offset) | (1 << 8);
break;
case TGSI_FILE_CONSTANT:
/* XXX magic */
return src->Index | (1 << 8);
break;
default:
debug_printf("r300: fs: Unimplemented src %d\n", src->File);
break;
}
return 0;
}
static INLINE unsigned r300_fs_dst(struct r300_fs_asm* assembler,
struct tgsi_dst_register* dst)
{
switch (dst->File) {
case TGSI_FILE_NULL:
/* This happens during KIL instructions. */
return 0;
break;
case TGSI_FILE_OUTPUT:
return 0;
break;
case TGSI_FILE_TEMPORARY:
return dst->Index + assembler->temp_offset;
break;
default:
debug_printf("r300: fs: Unimplemented dst %d\n", dst->File);
break;
}
return 0;
}
static INLINE boolean r300_fs_is_depr(struct r300_fs_asm* assembler,
struct tgsi_dst_register* dst)
{
return (assembler->writes_depth &&
(dst->File == TGSI_FILE_OUTPUT) &&
(dst->Index == assembler->depth_output));
}
#endif /* R300_FS_INLINES_H */
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