diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp index 2d3a058..96636e8 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp @@ -156,6 +156,23 @@ vec4_gs_visitor::emit_prolog() } } + /* If the geometry shader uses the gl_PointSize input, we need to fix it up + * to account for the fact that the vertex shader stored it in the w + * component of VARYING_SLOT_PSIZ. + */ + if (c->gp->program.Base.InputsRead & VARYING_BIT_PSIZ) { + this->current_annotation = "swizzle gl_PointSize input"; + for (int vertex = 0; vertex < c->gp->program.VerticesIn; vertex++) { + dst_reg dst(ATTR, + BRW_VARYING_SLOT_COUNT * vertex + VARYING_SLOT_PSIZ); + dst.type = BRW_REGISTER_TYPE_F; + src_reg src(dst); + dst.writemask = WRITEMASK_X; + src.swizzle = BRW_SWIZZLE_WWWW; + emit(MOV(dst, src)); + } + } + this->current_annotation = NULL; } |