[Mesa-dev] [PATCH] llvmpipe: fix fp64 inputs to geom shader.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

This fixes the fetching of fp64 inputs to the geometry shader,

this fixes the recently posted piglit's
arb_gpu_shader_fp64/execution/gs-fs-vs-double-array.shader_test
arb_vertex_attrib_64bit/execution/gs-fs-vs-attrib-double-array.shader_test

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index fae604e..e1184e8 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -1548,13 +1548,21 @@ emit_fetch_gs_input(
                                     swizzle_index);
 
    assert(res);
-
-   if (stype == TGSI_TYPE_UNSIGNED) {
+   if (stype == TGSI_TYPE_DOUBLE) {
+      LLVMValueRef swizzle_index = lp_build_const_int32(gallivm, swizzle + 1);
+      LLVMValueRef res2;
+      res2 = bld->gs_iface->fetch_input(bld->gs_iface, bld_base,
+                                        reg->Dimension.Indirect,
+                                        vertex_index,
+                                        reg->Register.Indirect,
+                                        attrib_index,
+                                        swizzle_index);
+      assert(res2);
+      res = emit_fetch_double(bld_base, stype, res, res2);
+   } else if (stype == TGSI_TYPE_UNSIGNED) {
       res = LLVMBuildBitCast(builder, res, bld_base->uint_bld.vec_type, "");
    } else if (stype == TGSI_TYPE_SIGNED) {
       res = LLVMBuildBitCast(builder, res, bld_base->int_bld.vec_type, "");
-   } else if (stype == TGSI_TYPE_DOUBLE) {
-      res = LLVMBuildBitCast(builder, res, bld_base->dbl_bld.vec_type, "");
    }
 
    return res;
-- 
2.4.3