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video_core: Fix drawing trigger mechanism regression

This commit is contained in:
FengChen 2022-10-31 21:40:32 +08:00
parent f39d2cf78b
commit b42b894785
1 changed files with 25 additions and 32 deletions
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47
src/video_core/engines/maxwell_3d.cpp
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@ -631,47 +631,40 @@ void Maxwell3D::ProcessDeferredDraw() {
Instance,
};
DrawMode draw_mode{DrawMode::Undefined};
u32 instance_count = 1;
u32 index = 0;
u32 method = 0;
u32 method_count = static_cast<u32>(deferred_draw_method.size());
for (; index < method_count &&
(method = deferred_draw_method[index]) != MAXWELL3D_REG_INDEX(draw.begin);
++index)
;
if (MAXWELL3D_REG_INDEX(draw.begin) != method) {
return;
}
// The minimum number of methods for drawing must be greater than or equal to
// 3[draw.begin->vertex(index)count(first)->draw.end] to avoid errors in index mode drawing
if ((method_count - index) < 3) {
u32 method = deferred_draw_method[method_count - 1];
if (MAXWELL3D_REG_INDEX(draw.end) != method) {
return;
}
draw_mode = (regs.draw.instance_id == Maxwell3D::Regs::Draw::InstanceId::Subsequent) ||
(regs.draw.instance_id == Maxwell3D::Regs::Draw::InstanceId::Unchanged)
? DrawMode::Instance
: DrawMode::General;
// Drawing will only begin with draw.begin or index_buffer method, other methods directly
// clear
if (draw_mode == DrawMode::Undefined) {
deferred_draw_method.clear();
return;
}
u32 instance_count = 0;
if (draw_mode == DrawMode::Instance) {
ASSERT_MSG(deferred_draw_method.size() % 4 == 0, "Instance mode method size error");
instance_count = static_cast<u32>(method_count - index) / 4;
u32 vertex_buffer_count = 0;
u32 index_buffer_count = 0;
for (u32 index = 0; index < method_count; ++index) {
method = deferred_draw_method[index];
if (method == MAXWELL3D_REG_INDEX(vertex_buffer.count)) {
instance_count = ++vertex_buffer_count;
} else if (method == MAXWELL3D_REG_INDEX(index_buffer.count)) {
instance_count = ++index_buffer_count;
}
}
ASSERT_MSG(!(vertex_buffer_count && index_buffer_count),
"Instance both indexed and direct?");
} else {
method = deferred_draw_method[index + 1];
instance_count = 1;
for (u32 index = 0; index < method_count; ++index) {
method = deferred_draw_method[index];
if (MAXWELL3D_REG_INDEX(draw_inline_index) == method ||
MAXWELL3D_REG_INDEX(inline_index_2x16.even) == method ||
MAXWELL3D_REG_INDEX(inline_index_4x8.index0) == method) {
regs.index_buffer.count = static_cast<u32>(inline_index_draw_indexes.size() / 4);
regs.index_buffer.format = Regs::IndexFormat::UnsignedInt;
break;
}
}
}