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mesa: Replace the EmitNoIfs compiler flag with a MaxIfDepth flag.

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This is a better, more fine-grained way of lowering if statements.  Fixes the
game And Yet It Moves on nv50.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Bryan Cain
2011-08-31 17:28:53 -05:00
parent 7b1d94e5d1
commit 488fe51cf8
5 changed files with 10 additions and 14 deletions
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8
src/mesa/program/ir_to_mesa.cpp
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@@ -3119,7 +3119,7 @@ get_mesa_program(struct gl_context *ctx,
switch (mesa_inst->Opcode) {
case OPCODE_IF:
if (options->EmitNoIfs) {
if (options->MaxIfDepth == 0) {
linker_warning(shader_program,
"Couldn't flatten if-statement. "
"This will likely result in software "
@@ -3241,10 +3241,10 @@ _mesa_ir_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
progress = lower_quadop_vector(ir, true) || progress;
if (options->EmitNoIfs) {
if (options->MaxIfDepth == 0)
progress = lower_discard(ir) || progress;
progress = lower_if_to_cond_assign(ir) || progress;
}
progress = lower_if_to_cond_assign(ir, options->MaxIfDepth) || progress;
if (options->EmitNoNoise)
progress = lower_noise(ir) || progress;