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i965: Handle unwritten PSIZ/VIEWPORT/LAYER outputs in vec4 shaders.

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This can occur if the shader is capturing some of the values from the
VUE header for transform feedback, but the shader hasn't written all of
them.

Reviewed-by: Juan A. Suarez Romero <jasuarez@igalia.com>
This commit is contained in:
Kenneth Graunke
2017-09-15 00:45:35 -07:00
parent 3bec992e36
commit c9fbe772ba
1 changed files with 3 additions and 3 deletions
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6
src/intel/compiler/brw_vec4_visitor.cpp
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@@ -1245,7 +1245,7 @@ vec4_visitor::emit_psiz_and_flags(dst_reg reg)
emit(MOV(retype(reg, BRW_REGISTER_TYPE_UD), brw_imm_ud(0u)));
} else {
emit(MOV(retype(reg, BRW_REGISTER_TYPE_D), brw_imm_d(0)));
if (prog_data->vue_map.slots_valid & VARYING_BIT_PSIZ) {
if (output_reg[VARYING_SLOT_PSIZ][0].file != BAD_FILE) {
dst_reg reg_w = reg;
reg_w.writemask = WRITEMASK_W;
src_reg reg_as_src = src_reg(output_reg[VARYING_SLOT_PSIZ][0]);
@@ -1253,14 +1253,14 @@ vec4_visitor::emit_psiz_and_flags(dst_reg reg)
reg_as_src.swizzle = brw_swizzle_for_size(1);
emit(MOV(reg_w, reg_as_src));
}
if (prog_data->vue_map.slots_valid & VARYING_BIT_LAYER) {
if (output_reg[VARYING_SLOT_LAYER][0].file != BAD_FILE) {
dst_reg reg_y = reg;
reg_y.writemask = WRITEMASK_Y;
reg_y.type = BRW_REGISTER_TYPE_D;
output_reg[VARYING_SLOT_LAYER][0].type = reg_y.type;
emit(MOV(reg_y, src_reg(output_reg[VARYING_SLOT_LAYER][0])));
}
if (prog_data->vue_map.slots_valid & VARYING_BIT_VIEWPORT) {
if (output_reg[VARYING_SLOT_VIEWPORT][0].file != BAD_FILE) {
dst_reg reg_z = reg;
reg_z.writemask = WRITEMASK_Z;
reg_z.type = BRW_REGISTER_TYPE_D;