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Fix RSQ emulation

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This commit is contained in:
Ben Skeggs
2006-11-26 13:18:41 +00:00
parent 6ff3d2577e
commit 2f411b0a8b
1 changed files with 19 additions and 3 deletions
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src/mesa/drivers/dri/nouveau/nouveau_shader_0_arb.c
+19 -3
View File
@@ -125,6 +125,7 @@ struct pass0_rec {
int next_temp;
int swzconst_done;
int swzconst_id;
nvsRegister const_half;
};
#define X NVS_SWZ_X
@@ -488,6 +489,7 @@ pass0_emulate_instruction(nouveauShader *nvs, struct prog_instruction *inst)
nvsFunc *shader = nvs->func;
nvsRegister src[3], dest, temp;
nvsInstruction *nvsinst;
struct pass0_rec *rec = nvs->pass_rec;
unsigned int mask = pass0_make_mask(inst->DstReg.WriteMask);
int i, sat;
@@ -561,11 +563,26 @@ pass0_emulate_instruction(nouveauShader *nvs, struct prog_instruction *inst)
}
break;
case OPCODE_RSQ:
if (rec->const_half.file != NVS_FILE_CONST) {
GLfloat const_half[4] = { 0.5, 0.0, 0.0, 0.0 };
pass0_make_reg(nvs, &rec->const_half, NVS_FILE_CONST,
_mesa_add_unnamed_constant(nvs->mesa.vp.Base.Parameters,
const_half, 4));
COPY_4V(nvs->params[rec->const_half.index].val, const_half);
}
pass0_make_reg(nvs, &temp, NVS_FILE_TEMP, -1);
pass0_emit(nvs, NVS_OP_LG2, temp, SMASK_X, 0,
nvsAbs(nvsSwizzle(src[0], X, X, X, X)), nvr_unused, nvr_unused);
nvsAbs(nvsSwizzle(src[0], X, X, X, X)),
nvr_unused,
nvr_unused);
pass0_emit(nvs, NVS_OP_MUL, temp, SMASK_X, 0,
nvsSwizzle(temp, X, X, X, X),
nvsNegate(rec->const_half),
nvr_unused);
pass0_emit(nvs, NVS_OP_EX2, dest, mask, sat,
nvsSwizzle(temp, X, X, X, X), nvr_unused, nvr_unused);
nvsSwizzle(temp, X, X, X, X),
nvr_unused,
nvr_unused);
break;
case OPCODE_SCS:
if (mask & SMASK_X)
@@ -607,7 +624,6 @@ static GLboolean
pass0_translate_instructions(nouveauShader *nvs)
{
struct gl_program *prog = (struct gl_program *)&nvs->mesa.vp;
struct pass0_rec *rec = nvs->pass_rec;
nvsFunc *shader = nvs->func;
int ipos;