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authorZack Rusin <zackr@vmware.com>2009-09-03 15:33:31 -0400
committerZack Rusin <zackr@vmware.com>2009-09-03 16:52:04 -0400
commit007a843991cd2c03369590fa15cbb60a9b261c65 (patch)
tree1df320bdb7bc0c2c4dca6aa4c2781c2bf6c648c4 /src
parent5571c4fe3650d062d9c469b774ff4930f43c4354 (diff)
st/xorg: radial gradient shader
Diffstat (limited to 'src')
-rw-r--r--src/gallium/state_trackers/xorg/xorg_exa_tgsi.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/xorg/xorg_exa_tgsi.c b/src/gallium/state_trackers/xorg/xorg_exa_tgsi.c
index 9fb1f3f6cb..b15f31e8ae 100644
--- a/src/gallium/state_trackers/xorg/xorg_exa_tgsi.c
+++ b/src/gallium/state_trackers/xorg/xorg_exa_tgsi.c
@@ -145,6 +145,91 @@ linear_gradient(struct ureg_program *ureg,
ureg_release_temporary(ureg, temp5);
}
+
+static void
+radial_gradient(struct ureg_program *ureg,
+ struct ureg_dst out,
+ struct ureg_src pos,
+ struct ureg_src sampler,
+ struct ureg_src coords,
+ struct ureg_src const0124,
+ struct ureg_src matrow0,
+ struct ureg_src matrow1,
+ struct ureg_src matrow2)
+{
+ struct ureg_dst temp0 = ureg_DECL_temporary(ureg);
+ struct ureg_dst temp1 = ureg_DECL_temporary(ureg);
+ struct ureg_dst temp2 = ureg_DECL_temporary(ureg);
+ struct ureg_dst temp3 = ureg_DECL_temporary(ureg);
+ struct ureg_dst temp4 = ureg_DECL_temporary(ureg);
+ struct ureg_dst temp5 = ureg_DECL_temporary(ureg);
+
+ ureg_MOV(ureg,
+ ureg_writemask(temp0, TGSI_WRITEMASK_XY),
+ pos);
+ ureg_MOV(ureg,
+ ureg_writemask(temp0, TGSI_WRITEMASK_Z),
+ ureg_scalar(const0124, TGSI_SWIZZLE_Y));
+
+ ureg_DP3(ureg, temp1, matrow0, ureg_src(temp0));
+ ureg_DP3(ureg, temp2, matrow1, ureg_src(temp0));
+ ureg_DP3(ureg, temp3, matrow2, ureg_src(temp0));
+ ureg_RCP(ureg, temp3, ureg_src(temp3));
+ ureg_MUL(ureg, temp1, ureg_src(temp1), ureg_src(temp3));
+ ureg_MUL(ureg, temp2, ureg_src(temp2), ureg_src(temp3));
+
+ ureg_MOV(ureg, ureg_writemask(temp5, TGSI_WRITEMASK_X),
+ ureg_src(temp1));
+ ureg_MOV(ureg, ureg_writemask(temp5, TGSI_WRITEMASK_Y),
+ ureg_src(temp2));
+
+ ureg_MUL(ureg, temp0, ureg_scalar(coords, TGSI_SWIZZLE_Y),
+ ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_Y));
+ ureg_MAD(ureg, temp1,
+ ureg_scalar(coords, TGSI_SWIZZLE_X),
+ ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_X),
+ ureg_src(temp0));
+ ureg_ADD(ureg, temp1,
+ ureg_src(temp1), ureg_src(temp1));
+ ureg_MUL(ureg, temp3,
+ ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_Y),
+ ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_Y));
+ ureg_MAD(ureg, temp4,
+ ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_X),
+ ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_X),
+ ureg_src(temp3));
+ ureg_MOV(ureg, temp4, ureg_negate(ureg_src(temp4)));
+ ureg_MUL(ureg, temp2,
+ ureg_scalar(coords, TGSI_SWIZZLE_Z),
+ ureg_src(temp4));
+ ureg_MUL(ureg, temp0,
+ ureg_scalar(const0124, TGSI_SWIZZLE_W),
+ ureg_src(temp2));
+ ureg_MUL(ureg, temp3,
+ ureg_src(temp1), ureg_src(temp1));
+ ureg_SUB(ureg, temp2,
+ ureg_src(temp3), ureg_src(temp0));
+ ureg_RSQ(ureg, temp2, ureg_abs(ureg_src(temp2)));
+ ureg_RCP(ureg, temp2, ureg_src(temp2));
+ ureg_SUB(ureg, temp1,
+ ureg_src(temp2), ureg_src(temp1));
+ ureg_ADD(ureg, temp0,
+ ureg_scalar(coords, TGSI_SWIZZLE_Z),
+ ureg_scalar(coords, TGSI_SWIZZLE_Z));
+ ureg_RCP(ureg, temp0, ureg_src(temp0));
+ ureg_MUL(ureg, temp2,
+ ureg_src(temp1), ureg_src(temp0));
+ ureg_TEX(ureg, out, TGSI_TEXTURE_1D,
+ ureg_src(temp2), sampler);
+
+ ureg_release_temporary(ureg, temp0);
+ ureg_release_temporary(ureg, temp1);
+ ureg_release_temporary(ureg, temp2);
+ ureg_release_temporary(ureg, temp3);
+ ureg_release_temporary(ureg, temp4);
+ ureg_release_temporary(ureg, temp5);
+}
+
static void *
create_vs(struct pipe_context *pipe,
unsigned vs_traits)