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authorXiang, Haihao <[email protected]>2007-09-26 16:42:50 +0800
committerXiang, Haihao <[email protected]>2007-09-26 16:42:50 +0800
commit175db68db59c6b917306adff98442d590df9af06 (patch)
tree34e9026fdcc6be5d7d7acc96c385354291efb642
parent395b3bf6f95b35a84a74d4baf7e04bc67cf3771c (diff)
i965: The cube map texture coordinates must be devided by the
component with the largest absolute value before they are delivered. fix bug #12421
-rw-r--r--src/mesa/drivers/dri/i965/brw_wm_fp.c52
1 files changed, 51 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_fp.c b/src/mesa/drivers/dri/i965/brw_wm_fp.c
index 62bb0812062..67154c1b13a 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_fp.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_fp.c
@@ -525,7 +525,57 @@ static void precalc_tex( struct brw_wm_compile *c,
struct prog_src_register coord;
struct prog_dst_register tmpcoord;
- if (inst->TexSrcTarget == TEXTURE_RECT_INDEX) {
+ if (inst->TexSrcTarget == TEXTURE_CUBE_INDEX) {
+ struct prog_instruction *out;
+ struct prog_dst_register tmp0 = get_temp(c);
+ struct prog_src_register tmp0src = src_reg_from_dst(tmp0);
+ struct prog_dst_register tmp1 = get_temp(c);
+ struct prog_src_register tmp1src = src_reg_from_dst(tmp1);
+ struct prog_src_register src0 = inst->SrcReg[0];
+
+ tmpcoord = get_temp(c);
+ coord = src_reg_from_dst(tmpcoord);
+
+ out = emit_op(c, OPCODE_MOV,
+ tmpcoord,
+ 0, 0, 0,
+ src0,
+ src_undef(),
+ src_undef());
+ out->SrcReg[0].NegateBase = 0;
+ out->SrcReg[0].Abs = 1;
+
+ emit_op(c, OPCODE_MAX,
+ tmp0,
+ 0, 0, 0,
+ src_swizzle1(coord, X),
+ src_swizzle1(coord, Y),
+ src_undef());
+
+ emit_op(c, OPCODE_MAX,
+ tmp1,
+ 0, 0, 0,
+ tmp0src,
+ src_swizzle1(coord, Z),
+ src_undef());
+
+ emit_op(c, OPCODE_RCP,
+ tmp0,
+ 0, 0, 0,
+ tmp1src,
+ src_undef(),
+ src_undef());
+
+ emit_op(c, OPCODE_MUL,
+ tmpcoord,
+ 0, 0, 0,
+ src0,
+ tmp0src,
+ src_undef());
+
+ release_temp(c, tmp0);
+ release_temp(c, tmp1);
+ } else if (inst->TexSrcTarget == TEXTURE_RECT_INDEX) {
struct prog_src_register scale =
search_or_add_param5( c,
STATE_INTERNAL,