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svga: Emit a scalar rcp in shadow maps.

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Small improvement in Lightsmark 2008.
This commit is contained in:
José Fonseca 2010-02-22 18:57:09 +00:00
parent 46d8ca023d
commit f5ffbe0bc3
1 changed files with 4 additions and 4 deletions
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8
src/gallium/drivers/svga/svga_tgsi_insn.c
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@ -1416,21 +1416,21 @@ static boolean emit_tex(struct svga_shader_emitter *emit,
/* Divide texcoord R by Q */
if (!submit_op1( emit, inst_token( SVGA3DOP_RCP ),
src0_zdivw,
writemask(src0_zdivw, TGSI_WRITEMASK_X),
scalar(src0, TGSI_SWIZZLE_W) ))
return FALSE;
if (!submit_op2( emit, inst_token( SVGA3DOP_MUL ),
src0_zdivw,
writemask(src0_zdivw, TGSI_WRITEMASK_X),
scalar(src0, TGSI_SWIZZLE_Z),
src(src0_zdivw) ))
scalar(src(src0_zdivw), TGSI_SWIZZLE_X) ))
return FALSE;
if (!emit_select(
emit,
emit->key.fkey.tex[src1.base.num].compare_func,
writemask( dst, TGSI_WRITEMASK_XYZ ),
src(src0_zdivw),
scalar(src(src0_zdivw), TGSI_SWIZZLE_X),
tex_src_x))
return FALSE;
}