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/*
* Copyright 2009 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_tcl.h"
static void r300_vs_declare(struct r300_vs_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: vs: Bad semantic declaration %d\n",
decl->Semantic.SemanticName);
break;
}
break;
case TGSI_FILE_OUTPUT:
case TGSI_FILE_CONSTANT:
break;
case TGSI_FILE_TEMPORARY:
assembler->temp_count++;
break;
default:
debug_printf("r300: vs: Bad file %d\n", decl->Declaration.File);
break;
}
assembler->temp_offset = assembler->color_count + assembler->tex_count;
}
static INLINE unsigned r300_vs_src(struct r300_vs_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: vs: Unimplemented src %d\n", src->File);
break;
}
return 0;
}
static INLINE unsigned r300_vs_dst(struct r300_vs_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: vs: Unimplemented dst %d\n", dst->File);
break;
}
return 0;
}
static void r300_vs_emit_inst(struct r300_vertex_shader* vs,
struct r300_vs_asm* assembler,
struct tgsi_full_src_register* src,
struct tgsi_full_dst_register* dst)
{
int i = vs->instruction_count;
vs->instructions[i].inst0 = R300_PVS_DST_OPCODE(R300_VE_ADD) |
R300_PVS_DST_REG_TYPE(R300_PVS_DST_REG_OUT) |
R300_PVS_DST_OFFSET(dst->DstRegister.Index);
}
static void r300_vs_instruction(struct r300_vertex_shader* vs,
struct r300_vs_asm* assembler,
struct tgsi_full_instruction* inst)
{
switch (inst->Instruction.Opcode) {
case TGSI_OPCODE_MOV:
r300_vs_emit_inst(vs, assembler, inst->FullSrcRegisters,
&inst->FullDstRegisters[0]);
break;
case TGSI_OPCODE_END:
break;
default:
debug_printf("r300: vs: Bad opcode %d\n",
inst->Instruction.Opcode);
break;
}
}
void r300_translate_vertex_shader(struct r300_context* r300,
struct r300_vertex_shader* vs)
{
struct tgsi_parse_context parser;
int i;
struct r300_constant_buffer* consts =
&r300->shader_constants[PIPE_SHADER_VERTEX];
struct r300_vs_asm* assembler = CALLOC_STRUCT(r300_vs_asm);
if (assembler == NULL) {
return;
}
/* Setup starting offset for immediates. */
assembler->imm_offset = consts->user_count;
tgsi_parse_init(&parser, vs->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_vs_declare(assembler, &parser.FullToken.FullDeclaration);
break;
case TGSI_TOKEN_TYPE_IMMEDIATE:
debug_printf("r300: Emitting immediate to constant buffer, "
"position %d\n",
assembler->imm_offset + assembler->imm_count);
/* I am not amused by the length of these. */
for (i = 0; i < 4; i++) {
consts->constants[assembler->imm_offset +
assembler->imm_count][i] =
parser.FullToken.FullImmediate.u.ImmediateFloat32[i]
.Float;
}
assembler->imm_count++;
break;
case TGSI_TOKEN_TYPE_INSTRUCTION:
r300_vs_instruction(vs, assembler,
&parser.FullToken.FullInstruction);
break;
}
}
debug_printf("r300: vs: %d texs and %d colors, first free reg is %d\n",
assembler->tex_count, assembler->color_count,
assembler->tex_count + assembler->color_count);
consts->count = consts->user_count + assembler->imm_count;
debug_printf("r300: vs: %d total constants, "
"%d from user and %d from immediates\n", consts->count,
consts->user_count, assembler->imm_count);
tgsi_dump(vs->state.tokens);
/* XXX finish r300 vertex shader dumper */
tgsi_parse_free(&parser);
FREE(assembler);
}
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