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r300: fix swizzle masking in getUsedComponents

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This commit is contained in:
Maciej Cencora
2009-07-11 19:10:58 +02:00
parent acd3360041
commit 3f5382819e
1 changed files with 8 additions and 4 deletions
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src/mesa/drivers/dri/r300/r300_vertprog.c
+8 -4
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@@ -1524,10 +1524,14 @@ static GLuint getUsedComponents(const GLuint swizzle)
ret = 0;
/* need to mask out ZERO, ONE and NIL swizzles */
ret |= 1 << (GET_SWZ(swizzle, SWIZZLE_X) & 0x3);
ret |= 1 << (GET_SWZ(swizzle, SWIZZLE_Y) & 0x3);
ret |= 1 << (GET_SWZ(swizzle, SWIZZLE_Z) & 0x3);
ret |= 1 << (GET_SWZ(swizzle, SWIZZLE_W) & 0x3);
if (GET_SWZ(swizzle, SWIZZLE_X) <= SWIZZLE_W)
ret |= 1 << (GET_SWZ(swizzle, SWIZZLE_X));
if (GET_SWZ(swizzle, SWIZZLE_Y) <= SWIZZLE_W)
ret |= 1 << (GET_SWZ(swizzle, SWIZZLE_Y));
if (GET_SWZ(swizzle, SWIZZLE_Z) <= SWIZZLE_W)
ret |= 1 << (GET_SWZ(swizzle, SWIZZLE_Z));
if (GET_SWZ(swizzle, SWIZZLE_W) <= SWIZZLE_W)
ret |= 1 << (GET_SWZ(swizzle, SWIZZLE_W));
return ret;
}