lima/ppir: Add gl_FragCoord handling

Treat gl_FragCoord variable as a system value and lower the w component
with a nir pass.
Add the necessary bits for correct codegen.

Signed-off-by: Andreas Baierl <[email protected]>
Reviewed-by: Qiang Yu <[email protected]>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gallium/drivers/lima/ir/pp/node_to_instr.c b/src/gallium/drivers/lima/ir/pp/node_to_instr.c
index 26d2c9868f6..b38fa3aa733 100644
--- a/src/gallium/drivers/lima/ir/pp/node_to_instr.c
+++ b/src/gallium/drivers/lima/ir/pp/node_to_instr.c
@@ -238,7 +238,8 @@ static bool ppir_do_node_to_instr(ppir_block *block, ppir_node *node)
          load->dest.type = ppir_target_pipeline;
          load->dest.pipeline = ppir_pipeline_reg_uniform;
       }
-      else if (node->op == ppir_op_load_varying) {
+      else if (node->op == ppir_op_load_varying ||
+               node->op == ppir_op_load_fragcoord) {
          /* delay the load varying dup to scheduler */
          if (!create_new_instr(block, node))
             return false;