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r600g: use special constants for 0, 1, -1, 1.0f, 0.5f etc

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This commit is contained in:
Christian König 2010-12-14 23:38:30 +01:00
parent 270f6d194c
commit f75578b31e
1 changed files with 44 additions and 12 deletions
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56
src/gallium/drivers/r600/r600_shader.c
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@ -542,7 +542,7 @@ int r600_shader_from_tgsi(const struct tgsi_token *tokens, struct r600_shader *s
ctx.file_offset[TGSI_FILE_CONSTANT] = 128;
ctx.file_offset[TGSI_FILE_IMMEDIATE] = 253;
ctx.file_offset[TGSI_FILE_IMMEDIATE] = V_SQ_ALU_SRC_LITERAL;
ctx.temp_reg = ctx.file_offset[TGSI_FILE_TEMPORARY] +
ctx.info.file_count[TGSI_FILE_TEMPORARY];
@ -730,22 +730,54 @@ static int tgsi_src(struct r600_shader_ctx *ctx,
const struct tgsi_full_src_register *tgsi_src,
struct r600_bc_alu_src *r600_src)
{
int index;
memset(r600_src, 0, sizeof(struct r600_bc_alu_src));
r600_src->sel = tgsi_src->Register.Index;
if (tgsi_src->Register.File == TGSI_FILE_IMMEDIATE) {
r600_src->sel = 0;
r600_src->neg = tgsi_src->Register.Negate;
r600_src->abs = tgsi_src->Register.Absolute;
if (tgsi_src->Register.File == TGSI_FILE_IMMEDIATE) {
int index;
if((tgsi_src->Register.SwizzleX == tgsi_src->Register.SwizzleY) &&
(tgsi_src->Register.SwizzleX == tgsi_src->Register.SwizzleZ) &&
(tgsi_src->Register.SwizzleX == tgsi_src->Register.SwizzleW)) {
index = tgsi_src->Register.Index * 4 + tgsi_src->Register.SwizzleX;
switch(ctx->literals[index]) {
case 0:
r600_src->sel = V_SQ_ALU_SRC_0;
return 0;
case 1:
r600_src->sel = V_SQ_ALU_SRC_1_INT;
return 0;
case -1:
r600_src->sel = V_SQ_ALU_SRC_M_1_INT;
return 0;
case 0x3F800000: // 1.0f
r600_src->sel = V_SQ_ALU_SRC_1;
return 0;
case 0x3F000000: // 0.5f
r600_src->sel = V_SQ_ALU_SRC_0_5;
return 0;
case 0xBF800000: // -1.0f
r600_src->sel = V_SQ_ALU_SRC_1;
r600_src->neg ^= 1;
return 0;
case 0xBF000000: // -0.5f
r600_src->sel = V_SQ_ALU_SRC_0_5;
r600_src->neg ^= 1;
return 0;
}
}
index = tgsi_src->Register.Index;
r600_src->sel = V_SQ_ALU_SRC_LITERAL;
ctx->value[0] = ctx->literals[index * 4 + 0];
ctx->value[1] = ctx->literals[index * 4 + 1];
ctx->value[2] = ctx->literals[index * 4 + 2];
ctx->value[3] = ctx->literals[index * 4 + 3];
} else {
if (tgsi_src->Register.Indirect)
r600_src->rel = V_SQ_REL_RELATIVE;
r600_src->sel = tgsi_src->Register.Index;
r600_src->sel += ctx->file_offset[tgsi_src->Register.File];
}
if (tgsi_src->Register.Indirect)
r600_src->rel = V_SQ_REL_RELATIVE;
r600_src->neg = tgsi_src->Register.Negate;
r600_src->abs = tgsi_src->Register.Absolute;
r600_src->sel += ctx->file_offset[tgsi_src->Register.File];
return 0;
}
@ -833,12 +865,12 @@ static int tgsi_split_literal_constant(struct r600_shader_ctx *ctx, struct r600_
int i, j, k, nliteral, r;
for (i = 0, nliteral = 0; i < inst->Instruction.NumSrcRegs; i++) {
if (inst->Src[i].Register.File == TGSI_FILE_IMMEDIATE) {
if (r600_src[i].sel == V_SQ_ALU_SRC_LITERAL) {
nliteral++;
}
}
for (i = 0, j = nliteral - 1; i < inst->Instruction.NumSrcRegs; i++) {
if (j > 0 && inst->Src[i].Register.File == TGSI_FILE_IMMEDIATE) {
if (j > 0 && r600_src[i].sel == V_SQ_ALU_SRC_LITERAL) {
int treg = r600_get_temp(ctx);
for (k = 0; k < 4; k++) {
memset(&alu, 0, sizeof(struct r600_bc_alu));