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/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@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. */
#include "r300_state_shader.h"
static void r300_copy_passthrough_shader(struct r300_fragment_shader* fs)
{
struct r300_fragment_shader* pt = &r300_passthrough_fragment_shader;
fs->shader.stack_size = pt->shader.stack_size;
fs->alu_instruction_count = pt->alu_instruction_count;
fs->tex_instruction_count = pt->tex_instruction_count;
fs->indirections = pt->indirections;
fs->instructions[0] = pt->instructions[0];
}
static void r500_copy_passthrough_shader(struct r500_fragment_shader* fs)
{
struct r500_fragment_shader* pt = &r500_passthrough_fragment_shader;
fs->shader.stack_size = pt->shader.stack_size;
fs->instruction_count = pt->instruction_count;
fs->instructions[0] = pt->instructions[0];
}
static 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_GENERIC:
assembler->tex_count++;
break;
default:
debug_printf("r300: fs: Bad semantic declaration %d\n",
decl->Semantic.SemanticName);
break;
}
break;
case TGSI_FILE_OUTPUT:
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 r500_fix_swiz(unsigned s)
{
/* For historical reasons, the swizzle values x, y, z, w, and 0 are
* equivalent to the actual machine code, but 1 is not. Thus, we just
* adjust it a bit... */
if (s == TGSI_EXTSWIZZLE_ONE) {
return R500_SWIZZLE_ONE;
} else {
return s;
}
}
static INLINE uint32_t r500_rgb_swiz(struct tgsi_full_src_register* reg)
{
if (reg->SrcRegister.Extended) {
return r500_fix_swiz(reg->SrcRegisterExtSwz.ExtSwizzleX) |
(r500_fix_swiz(reg->SrcRegisterExtSwz.ExtSwizzleY) << 3) |
(r500_fix_swiz(reg->SrcRegisterExtSwz.ExtSwizzleZ) << 6);
} else {
return reg->SrcRegister.SwizzleX | (reg->SrcRegister.SwizzleY << 3) |
(reg->SrcRegister.SwizzleZ << 6);
}
}
static INLINE uint32_t r500_alpha_swiz(struct tgsi_full_src_register* reg)
{
if (reg->SrcRegister.Extended) {
return r500_fix_swiz(reg->SrcRegisterExtSwz.ExtSwizzleW);
} else {
return reg->SrcRegister.SwizzleW;
}
}
static INLINE void r500_emit_mov(struct r500_fragment_shader* fs,
struct r300_fs_asm* assembler,
struct tgsi_full_src_register* src,
struct tgsi_full_dst_register* dst)
{
int i = fs->instruction_count;
fs->instructions[i].inst0 = R500_INST_TYPE_OUT |
R500_INST_TEX_SEM_WAIT | R500_INST_LAST |
R500_INST_RGB_OMASK_RGB | R500_INST_ALPHA_OMASK |
R500_INST_RGB_CLAMP | R500_INST_ALPHA_CLAMP;
fs->instructions[i].inst1 =
R500_RGB_ADDR0(0) | R500_RGB_ADDR1(0) | R500_RGB_ADDR1_CONST |
R500_RGB_ADDR2(0) | R500_RGB_ADDR2_CONST;
fs->instructions[i].inst2 =
R500_ALPHA_ADDR0(0) | R500_ALPHA_ADDR1(0) | R500_ALPHA_ADDR1_CONST |
R500_ALPHA_ADDR2(0) | R500_ALPHA_ADDR2_CONST;
fs->instructions[i].inst3 = R500_ALU_RGB_SEL_A_SRC0 |
R500_SWIZ_RGB_A(r500_rgb_swiz(src)) |
R500_ALU_RGB_SEL_B_SRC0 |
R500_SWIZ_RGB_B(r500_rgb_swiz(src));
fs->instructions[i].inst4 = R500_ALPHA_OP_CMP |
R500_SWIZ_ALPHA_A(r500_alpha_swiz(src)) |
R500_SWIZ_ALPHA_B(r500_alpha_swiz(src));
fs->instructions[i].inst5 =
R500_ALU_RGBA_OP_CMP | R500_ALU_RGBA_R_SWIZ_0 |
R500_ALU_RGBA_G_SWIZ_0 | R500_ALU_RGBA_B_SWIZ_0 |
R500_ALU_RGBA_A_SWIZ_0;
fs->instruction_count++;
}
static void r500_fs_instruction(struct r500_fragment_shader* fs,
struct r300_fs_asm* assembler,
struct tgsi_full_instruction* inst)
{
/* Switch between opcodes. When possible, prefer using the official
* AMD/ATI names for opcodes, please, as it facilitates using the
* documentation. */
switch (inst->Instruction.Opcode) {
case TGSI_OPCODE_MOV:
case TGSI_OPCODE_SWZ:
r500_emit_mov(fs, assembler, &inst->FullSrcRegisters[0],
&inst->FullDstRegisters[0]);
break;
case TGSI_OPCODE_END:
break;
default:
debug_printf("r300: fs: Bad opcode %d\n",
inst->Instruction.Opcode);
break;
}
}
void r300_translate_fragment_shader(struct r300_context* r300,
struct r300_fragment_shader* fs)
{
struct tgsi_parse_context parser;
tgsi_parse_init(&parser, fs->shader.state.tokens);
while (!tgsi_parse_end_of_tokens(&parser)) {
tgsi_parse_token(&parser);
}
r300_copy_passthrough_shader(fs);
}
void r500_translate_fragment_shader(struct r300_context* r300,
struct r500_fragment_shader* fs)
{
struct r300_fs_asm* assembler = CALLOC_STRUCT(r300_fs_asm);
if (assembler == NULL) {
return;
}
struct tgsi_parse_context parser;
tgsi_parse_init(&parser, fs->shader.state.tokens);
while (!tgsi_parse_end_of_tokens(&parser)) {
tgsi_parse_token(&parser);
/* This is seriously the lamest way to create fragment programs ever.
* I blame TGSI. */
switch (parser.FullToken.Token.Type) {
case TGSI_TOKEN_TYPE_DECLARATION:
/* Allocated registers sitting at the beginning
* of the program. */
r300_fs_declare(assembler, &parser.FullToken.FullDeclaration);
break;
case TGSI_TOKEN_TYPE_INSTRUCTION:
r500_fs_instruction(fs, assembler,
&parser.FullToken.FullInstruction);
}
}
debug_printf("%d texs and %d colors, first free reg is %d\n",
assembler->tex_count, assembler->color_count,
assembler->tex_count + assembler->color_count);
/* XXX subtly wrong */
fs->shader.stack_size = assembler->temp_offset;
tgsi_dump(fs->shader.state.tokens);
//r500_copy_passthrough_shader(fs);
tgsi_parse_free(&parser);
FREE(assembler);
}
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