Module: Mesa Branch: glsl-to-tgsi Commit: be2232be4c0f80421f577afe3a24eb7f44215c0a URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=be2232be4c0f80421f577afe3a24eb7f44215c0a
Author: Bryan Cain <[email protected]> Date: Fri Jun 24 20:37:53 2011 -0500 glsl_to_tgsi: use a more specific condition for gl_FragDepth hack in generating assignments This reduces the number of instructions in the fragment shader of glsl-fs-atan-2 from 174 to 146 with EmitNoIfs enabled. --- src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp index d47364f..5f22f70 100644 --- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp +++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp @@ -1841,7 +1841,8 @@ glsl_to_tgsi_visitor::visit(ir_assignment *ir) if (ir->write_mask == 0) { assert(!ir->lhs->type->is_scalar() && !ir->lhs->type->is_vector()); l.writemask = WRITEMASK_XYZW; - } else if (ir->lhs->type->is_scalar()) { + } else if (ir->lhs->type->is_scalar() && + ir->lhs->variable_referenced()->mode == ir_var_out) { /* FINISHME: This hack makes writing to gl_FragDepth, which lives in the * FINISHME: W component of fragment shader output zero, work correctly. */ @@ -1851,7 +1852,6 @@ glsl_to_tgsi_visitor::visit(ir_assignment *ir) int first_enabled_chan = 0; int rhs_chan = 0; - assert(ir->lhs->type->is_vector()); l.writemask = ir->write_mask; for (int i = 0; i < 4; i++) { _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
