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tex comments

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This commit is contained in:
Brian 2007-10-25 18:30:06 -06:00
parent aaac436c6c
commit afd19177e4
1 changed files with 11 additions and 3 deletions
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14
src/mesa/pipe/tgsi/exec/tgsi_exec.c
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@ -926,7 +926,7 @@ fetch_src_file_channel(
break; break;
case TGSI_FILE_OUTPUT: case TGSI_FILE_OUTPUT:
/* vertex varying/output vars can be read too */ /* vertex/fragment output vars can be read too */
chan->u[0] = mach->Outputs[index->i[0]].xyzw[swizzle].u[0]; chan->u[0] = mach->Outputs[index->i[0]].xyzw[swizzle].u[0];
chan->u[1] = mach->Outputs[index->i[1]].xyzw[swizzle].u[1]; chan->u[1] = mach->Outputs[index->i[1]].xyzw[swizzle].u[1];
chan->u[2] = mach->Outputs[index->i[2]].xyzw[swizzle].u[2]; chan->u[2] = mach->Outputs[index->i[2]].xyzw[swizzle].u[2];
@ -1989,16 +1989,24 @@ exec_instruction(
break; break;
case TGSI_OPCODE_TEX: case TGSI_OPCODE_TEX:
/* src arg0 is the texcoord */ /* simple texture lookup */
/* src[0] is the texcoord */
/* src[1] is the sampler unit */
exec_tex(mach, inst, FALSE); exec_tex(mach, inst, FALSE);
break; break;
case TGSI_OPCODE_TXB: case TGSI_OPCODE_TXB:
/* Texture lookup with lod bias (src0.w) */ /* Texture lookup with lod bias */
/* src[0] is the texcoord (src[0].w = load bias) */
/* src[1] is the sampler unit */
exec_tex(mach, inst, TRUE); exec_tex(mach, inst, TRUE);
break; break;
case TGSI_OPCODE_TXD: case TGSI_OPCODE_TXD:
/* Texture lookup with explict partial derivatives */
/* src[0] = texcoord */
/* src[1] = d[strq]/dx */
/* src[2] = d[strq]/dy */
assert (0); assert (0);
break; break;