fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-08 02:38:04 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

svga: remove special-case code for texkil w component

Browse source 
Not actually needed.  Fixes piglit ARB_fragment_program/kil-swizzle test.

Reviewed-by: José Fonseca <jfonseca@vmware.com>
This commit is contained in:
Brian Paul 2013-11-20 16:07:31 -08:00
parent 2d5f21ba65
commit 9d1c71e34d
1 changed files with 6 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
src/gallium/drivers/svga/svga_tgsi_insn.c
View file

@ -1391,10 +1391,6 @@ emit_kill_if(struct svga_shader_emitter *emit,
{
const struct tgsi_full_src_register *reg = &insn->Src[0];
struct src_register src0, srcIn;
/* is the W component tested in another position? */
const boolean w_tested = (reg->Register.SwizzleW == reg->Register.SwizzleX ||
reg->Register.SwizzleW == reg->Register.SwizzleY ||
reg->Register.SwizzleW == reg->Register.SwizzleZ);
const boolean special = (reg->Register.Absolute ||
reg->Register.Negate ||
reg->Register.Indirect ||
@ -1406,38 +1402,25 @@ emit_kill_if(struct svga_shader_emitter *emit,
src0 = srcIn = translate_src_register( emit, reg );
if (special || !w_tested) {
if (special) {
/* need a temp reg */
temp = get_temp( emit );
}
if (special) {
/* move the source into a temp register */
submit_op1( emit, inst_token( SVGA3DOP_MOV ),
writemask( temp, TGSI_WRITEMASK_XYZ ),
src0 );
submit_op1(emit, inst_token(SVGA3DOP_MOV), temp, src0);
src0 = src( temp );
}
/* do the texkill (on the xyz components) */
/* Do the texkill by checking if any of the XYZW components are < 0.
* Note that ps_2_0 and later take XYZW in consideration, while ps_1_x
* only used XYZ. The MSDN documentation about this is incorrect.
*/
if (!submit_op0( emit, inst_token( SVGA3DOP_TEXKILL ), dst(src0) ))
return FALSE;
if (!w_tested) {
/* need to emit a second texkill to test the W component */
/* put src.wwww into temp register */
if (!submit_op1(emit,
inst_token( SVGA3DOP_MOV ),
writemask( temp, TGSI_WRITEMASK_XYZ ),
scalar(srcIn, TGSI_SWIZZLE_W)))
return FALSE;
/* second texkill */
if (!submit_op0( emit, inst_token( SVGA3DOP_TEXKILL ), temp ))
return FALSE;
}
return TRUE;
}