diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp
index 5208bea75..f9794dfe4 100644
--- a/src/video_core/engines/maxwell_3d.cpp
+++ b/src/video_core/engines/maxwell_3d.cpp
@@ -123,9 +123,6 @@ void Maxwell3D::InitializeRegisterDefaults() {
draw_command[MAXWELL3D_REG_INDEX(vertex_buffer.count)] = true;
draw_command[MAXWELL3D_REG_INDEX(index_buffer.first)] = true;
draw_command[MAXWELL3D_REG_INDEX(index_buffer.count)] = true;
- draw_command[MAXWELL3D_REG_INDEX(index_buffer32_first)] = true;
- draw_command[MAXWELL3D_REG_INDEX(index_buffer16_first)] = true;
- draw_command[MAXWELL3D_REG_INDEX(index_buffer8_first)] = true;
draw_command[MAXWELL3D_REG_INDEX(draw_inline_index)] = true;
draw_command[MAXWELL3D_REG_INDEX(inline_index_2x16.even)] = true;
draw_command[MAXWELL3D_REG_INDEX(inline_index_4x8.index0)] = true;
@@ -216,6 +213,21 @@ void Maxwell3D::ProcessMethodCall(u32 method, u32 argument, u32 nonshadow_argume
return ProcessCBBind(3);
case MAXWELL3D_REG_INDEX(bind_groups[4].raw_config):
return ProcessCBBind(4);
+ case MAXWELL3D_REG_INDEX(index_buffer32_first):
+ regs.index_buffer.count = regs.index_buffer32_first.count;
+ regs.index_buffer.first = regs.index_buffer32_first.first;
+ dirty.flags[VideoCommon::Dirty::IndexBuffer] = true;
+ return ProcessDraw();
+ case MAXWELL3D_REG_INDEX(index_buffer16_first):
+ regs.index_buffer.count = regs.index_buffer16_first.count;
+ regs.index_buffer.first = regs.index_buffer16_first.first;
+ dirty.flags[VideoCommon::Dirty::IndexBuffer] = true;
+ return ProcessDraw();
+ case MAXWELL3D_REG_INDEX(index_buffer8_first):
+ regs.index_buffer.count = regs.index_buffer8_first.count;
+ regs.index_buffer.first = regs.index_buffer8_first.first;
+ dirty.flags[VideoCommon::Dirty::IndexBuffer] = true;
+ return ProcessDraw();
case MAXWELL3D_REG_INDEX(topology_override):
use_topology_override = true;
return;
@@ -583,70 +595,7 @@ void Maxwell3D::ProcessClearBuffers() {
rasterizer->Clear();
}
-void Maxwell3D::ProcessDeferredDraw() {
- if (deferred_draw_method.empty()) {
- return;
- }
-
- enum class DrawMode {
- Undefined,
- General,
- Instance,
- };
- DrawMode draw_mode{DrawMode::Undefined};
- u32 instance_count = 1;
-
- auto first_method = deferred_draw_method[0];
- if (MAXWELL3D_REG_INDEX(draw.begin) == first_method) {
- // The minimum number of methods for drawing must be greater than or equal to
- // 3[draw.begin->vertex(index)count->draw.end] to avoid errors in index mode drawing
- if (deferred_draw_method.size() < 3) {
- 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;
- } else if (MAXWELL3D_REG_INDEX(index_buffer32_first) == first_method ||
- MAXWELL3D_REG_INDEX(index_buffer16_first) == first_method ||
- MAXWELL3D_REG_INDEX(index_buffer8_first) == first_method) {
- draw_mode = 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;
- }
-
- if (draw_mode == DrawMode::Instance) {
- ASSERT_MSG(deferred_draw_method.size() % 4 == 0, "Instance mode method size error");
- instance_count = static_cast<u32>(deferred_draw_method.size()) / 4;
- } else {
- if (MAXWELL3D_REG_INDEX(index_buffer32_first) == first_method) {
- regs.index_buffer.count = regs.index_buffer32_first.count;
- regs.index_buffer.first = regs.index_buffer32_first.first;
- dirty.flags[VideoCommon::Dirty::IndexBuffer] = true;
- } else if (MAXWELL3D_REG_INDEX(index_buffer32_first) == first_method) {
- regs.index_buffer.count = regs.index_buffer16_first.count;
- regs.index_buffer.first = regs.index_buffer16_first.first;
- dirty.flags[VideoCommon::Dirty::IndexBuffer] = true;
- } else if (MAXWELL3D_REG_INDEX(index_buffer32_first) == first_method) {
- regs.index_buffer.count = regs.index_buffer8_first.count;
- regs.index_buffer.first = regs.index_buffer8_first.first;
- dirty.flags[VideoCommon::Dirty::IndexBuffer] = true;
- } else {
- auto second_method = deferred_draw_method[1];
- if (MAXWELL3D_REG_INDEX(draw_inline_index) == second_method ||
- MAXWELL3D_REG_INDEX(inline_index_2x16.even) == second_method ||
- MAXWELL3D_REG_INDEX(inline_index_4x8.index0) == second_method) {
- regs.index_buffer.count = static_cast<u32>(inline_index_draw_indexes.size() / 4);
- regs.index_buffer.format = Regs::IndexFormat::UnsignedInt;
- }
- }
- }
-
+void Maxwell3D::ProcessDraw(u32 instance_count) {
LOG_TRACE(HW_GPU, "called, topology={}, count={}", regs.draw.topology.Value(),
regs.vertex_buffer.count);
@@ -669,6 +618,64 @@ void Maxwell3D::ProcessDeferredDraw() {
} else {
regs.vertex_buffer.count = 0;
}
+}
+
+void Maxwell3D::ProcessDeferredDraw() {
+ if (deferred_draw_method.empty()) {
+ return;
+ }
+
+ enum class DrawMode {
+ Undefined,
+ General,
+ 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) {
+ 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;
+ }
+
+ 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;
+ } else {
+ method = deferred_draw_method[index + 1];
+ 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;
+ }
+ }
+
+ ProcessDraw(instance_count);
deferred_draw_method.clear();
inline_index_draw_indexes.clear();
diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h
index bd23ebc12..a948fcb14 100644
--- a/src/video_core/engines/maxwell_3d.h
+++ b/src/video_core/engines/maxwell_3d.h
@@ -3143,6 +3143,8 @@ private:
/// Handles use of topology overrides (e.g., to avoid using a topology assigned from a macro)
void ProcessTopologyOverride();
+ void ProcessDraw(u32 instance_count = 1);
+
void ProcessDeferredDraw();
/// Returns a query's value or an empty object if the value will be deferred through a cache.