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maxwell3d: Implement Conditional Rendering

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Conditional Rendering takes care of conditionaly clearing or drawing
depending on a set of queries. This PR implements the query checks to
stablish if things can be rendered or not.
This commit is contained in:
Fernando Sahmkow
2019-06-30 22:21:28 -04:00
committed by FernandoS27
parent 223a535f3f
commit e42bcf2314
3 changed files with 100 additions and 2 deletions
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44
src/video_core/engines/maxwell_3d.cpp
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@ -249,6 +249,10 @@ void Maxwell3D::CallMethod(const GPU::MethodCall& method_call) {
ProcessQueryGet();
break;
}
case MAXWELL3D_REG_INDEX(condition.mode): {
ProcessQueryCondition();
break;
}
case MAXWELL3D_REG_INDEX(sync_info): {
ProcessSyncPoint();
break;
@ -302,6 +306,7 @@ void Maxwell3D::ProcessQueryGet() {
result = regs.query.query_sequence;
break;
default:
result = 1;
UNIMPLEMENTED_MSG("Unimplemented query select type {}",
static_cast<u32>(regs.query.query_get.select.Value()));
}
@ -342,6 +347,45 @@ void Maxwell3D::ProcessQueryGet() {
}
}
void Maxwell3D::ProcessQueryCondition() {
const GPUVAddr condition_address{regs.condition.Address()};
switch (regs.condition.mode) {
case Regs::ConditionMode::Always: {
execute_on = true;
break;
}
case Regs::ConditionMode::Never: {
execute_on = false;
break;
}
case Regs::ConditionMode::ResNonZero: {
Regs::QueryCompare cmp;
memory_manager.ReadBlockUnsafe(condition_address, &cmp, sizeof(cmp));
execute_on = cmp.initial_sequence != 0U && cmp.initial_mode != 0U;
break;
}
case Regs::ConditionMode::Equal: {
Regs::QueryCompare cmp;
memory_manager.ReadBlockUnsafe(condition_address, &cmp, sizeof(cmp));
execute_on =
cmp.initial_sequence == cmp.current_sequence && cmp.initial_mode == cmp.current_mode;
break;
}
case Regs::ConditionMode::NotEqual: {
Regs::QueryCompare cmp;
memory_manager.ReadBlockUnsafe(condition_address, &cmp, sizeof(cmp));
execute_on =
cmp.initial_sequence != cmp.current_sequence || cmp.initial_mode != cmp.current_mode;
break;
}
default: {
UNIMPLEMENTED_MSG("Uninplemented Condition Mode!");
execute_on = true;
break;
}
}
}
void Maxwell3D::ProcessSyncPoint() {
const u32 sync_point = regs.sync_info.sync_point.Value();
const u32 increment = regs.sync_info.increment.Value();