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wined3d: Support writemasks on texkill in ARB.

This commit is contained in:
Stefan Dösinger 2009-06-25 18:01:46 +02:00 committed by Alexandre Julliard
parent 3a327908de
commit a07b50c94c
1 changed files with 22 additions and 3 deletions
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25
dlls/wined3d/arb_program_shader.c
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@ -1622,9 +1622,28 @@ static void pshader_hw_texkill(const struct wined3d_shader_instruction *ins)
if (ins->ctx->reg_maps->shader_version.major >= 2)
{
/* The arb backend doesn't claim ps 2.0 support, but try to eat what the app feeds to us */
shader_arb_get_dst_param(ins, dst, reg_dest);
shader_addline(buffer, "KIL %s;\n", reg_dest);
const char *kilsrc = "TA";
BOOL is_color;
shader_arb_get_register_name(ins, &dst->reg, reg_dest, &is_color);
if(dst->write_mask == WINED3DSP_WRITEMASK_ALL)
{
kilsrc = reg_dest;
}
else
{
/* Sigh. KIL doesn't support swizzles/writemasks. KIL passes a writemask, but ".xy" for example
* is not valid as a swizzle in ARB (needs ".xyyy"). Use SWZ to load the register properly, and set
* masked out components to 0(won't kill)
*/
char x = '0', y = '0', z = '0', w = '0';
if(dst->write_mask & WINED3DSP_WRITEMASK_0) x = 'x';
if(dst->write_mask & WINED3DSP_WRITEMASK_1) y = 'y';
if(dst->write_mask & WINED3DSP_WRITEMASK_2) z = 'z';
if(dst->write_mask & WINED3DSP_WRITEMASK_3) w = 'w';
shader_addline(buffer, "SWZ TA, %s, %c, %c, %c, %c;\n", reg_dest, x, y, z, w);
}
shader_addline(buffer, "KIL %s;\n", kilsrc);
} else {
/* ARB fp doesn't like swizzles on the parameter of the KIL instruction. To mask the 4th component,
* copy the register into our general purpose TMP variable, overwrite .w and pass TMP to KIL