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graphics: draw non-indexed and native-fetch indirect draws from GPU-read records

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nmzik
2026-10-22 15:11:39 +02:00
parent 949de19bb0
commit 86fed10b81
4 changed files with 118 additions and 99 deletions
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src/graphics/guest_gpu/graphicsRun.cpp
+12 -8
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@@ -903,14 +903,18 @@ void CommandProcessor::DrawIndirectMulti(uint32_t data_offset, uint32_t max_coun
// NUM_INSTANCES keeps the last draw's instance count.
m_num_instances_addr = args_addr + static_cast<uint64_t>(draw_count - 1) * stride_in_bytes +
offsetof(vk::DrawIndirectCommand, instanceCount);
// With no SGPRs to patch, the GPU reads indexed draws' arguments if the shaders allow.
if (indexed && m_index_buffer_size != 0 && registers.vertex_offset == Pm4::SH_NOP &&
registers.instance_offset == Pm4::SH_NOP && registers.index_offset == Pm4::SH_NOP &&
executor.DrawIndex(m_submit_id, CurrentBuffer(),
{.index_count = m_index_buffer_size,
.index_addr = IndexAddress(0),
.index_type_and_size = m_index_type_and_size,
.indirect = {args_addr, draw_count, stride_in_bytes}})) {
// With no SGPRs to patch, the GPU reads the records if the shaders allow. Shaders apply
// the records' offsets only through those SGPRs; Vulkan applies them, which matches
// while they are zero.
const DrawIndirectArgs records {args_addr, draw_count, stride_in_bytes};
if (registers.vertex_offset == Pm4::SH_NOP && registers.instance_offset == Pm4::SH_NOP &&
registers.index_offset == Pm4::SH_NOP && (!indexed || m_index_buffer_size != 0) &&
(indexed ? executor.DrawIndex(m_submit_id, CurrentBuffer(),
{.index_count = m_index_buffer_size,
.index_addr = IndexAddress(0),
.index_type_and_size = m_index_type_and_size,
.indirect = records})
: executor.DrawAuto(m_submit_id, CurrentBuffer(), {.indirect = records}))) {
return;
}