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-rw-r--r--src/gallium/drivers/svga/svga_tgsi_decl_sm30.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c b/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c
index 6d6c7c27a44..1c385cc7e81 100644
--- a/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c
+++ b/src/gallium/drivers/svga/svga_tgsi_decl_sm30.c
@@ -123,6 +123,12 @@ static boolean ps30_input( struct svga_shader_emitter *emit,
if (semantic.Name == TGSI_SEMANTIC_POSITION) {
emit->ps_true_pos = src_register( SVGA3DREG_MISCTYPE,
SVGA3DMISCREG_POSITION );
+
+ emit->ps_true_pos.base.swizzle = TRANSLATE_SWIZZLE( TGSI_SWIZZLE_X,
+ TGSI_SWIZZLE_Y,
+ TGSI_SWIZZLE_Y,
+ TGSI_SWIZZLE_Y );
+
emit->ps_temp_pos = dst_register( SVGA3DREG_TEMP,
emit->nr_hw_temp );
emit->ps_depth_pos = src_register( SVGA3DREG_INPUT, emit->ps30_input_count++ );
@@ -132,7 +138,7 @@ static boolean ps30_input( struct svga_shader_emitter *emit,
emit->nr_hw_temp++;
reg = writemask( dst(emit->ps_true_pos),
- TGSI_WRITEMASK_XYZW );
+ TGSI_WRITEMASK_XY );
emit->ps_reads_pos = TRUE;
if (!emit_decl( emit, dst(emit->ps_depth_pos),