diff options
Diffstat (limited to 'src/gallium/drivers/vc4/vc4_program.c')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_program.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c index 8109f635e3b..d871dcd88d3 100644 --- a/src/gallium/drivers/vc4/vc4_program.c +++ b/src/gallium/drivers/vc4/vc4_program.c @@ -570,6 +570,20 @@ emit_vertex_input(struct tgsi_to_qir *trans, int attr) } static void +emit_fragcoord_input(struct tgsi_to_qir *trans, int attr) +{ + struct qcompile *c = trans->c; + + trans->inputs[attr * 4 + 0] = qir_FRAG_X(c); + trans->inputs[attr * 4 + 1] = qir_FRAG_Y(c); + trans->inputs[attr * 4 + 2] = + qir_FMUL(c, + qir_FRAG_Z(c), + qir_uniform_f(trans, 1.0 / 0xffffff)); + trans->inputs[attr * 4 + 3] = qir_FRAG_RCP_W(c); +} + +static void emit_fragment_input(struct tgsi_to_qir *trans, int attr) { struct qcompile *c = trans->c; @@ -599,7 +613,12 @@ emit_tgsi_declaration(struct tgsi_to_qir *trans, i <= decl->Range.Last; i++) { if (c->stage == QSTAGE_FRAG) { - emit_fragment_input(trans, i); + if (decl->Semantic.Name == + TGSI_SEMANTIC_POSITION) { + emit_fragcoord_input(trans, i); + } else { + emit_fragment_input(trans, i); + } } else { emit_vertex_input(trans, i); } |