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graphics: write the subdraw index of multi-draw indirect packets

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Co-authored-by: Ali Almohaya <AliAlmohaya@gmail.com>
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nmzikandAli Almohaya committed 2026-10-26 05:32:02 +01:00
1 parent 72d7da7266
commit b4209dde1b
4 files changed
+19 -7
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src/graphics/guest_gpu/command_processor/commandProcessor.h
+1
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@@ -27,6 +27,7 @@ struct IndirectDrawRegisters {
uint32_t vertex_offset;
uint32_t instance_offset;
uint32_t index_offset;
uint32_t draw_index;
};
class Pm4Execution {
src/graphics/guest_gpu/command_processor/pm4Handlers.cpp
+5 -3
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@@ -1582,7 +1582,7 @@ KYTY_CP_OP_PARSER(CpOpDrawIndirect) {
// The native indexed packet enables the high-half first-index destination in word 3.
const IndirectDrawRegisters registers {
buffer[1] & 0xffffu, buffer[2] & 0xffffu,
indexed && (buffer[2] & (1u << 28u)) != 0 ? buffer[1] >> 16u : Pm4::SH_NOP};
indexed && (buffer[2] & (1u << 28u)) != 0 ? buffer[1] >> 16u : Pm4::SH_NOP, Pm4::SH_NOP};
cp.DrawIndirect(data_offset, registers, draw_initiator, indexed);
@@ -1602,10 +1602,12 @@ KYTY_CP_OP_PARSER(CpOpDrawIndirectMulti) {
const auto stride_in_bytes = buffer[7];
const auto draw_initiator = buffer[8];
const bool indexed = (cmd_id == 0xc0083800);
// Multi-draw moves the first-index enable to word 4; the destinations stay in 2/3.
// Multi-draw moves the first-index enable to word 4; the destinations stay in 2/3. Word 4
// bit 31 enables the subdraw index, written to the register in its low half.
const IndirectDrawRegisters registers {
buffer[1] & 0xffffu, buffer[2] & 0xffffu,
indexed && (buffer[3] & (1u << 28u)) != 0 ? buffer[1] >> 16u : Pm4::SH_NOP};
indexed && (buffer[3] & (1u << 28u)) != 0 ? buffer[1] >> 16u : Pm4::SH_NOP,
(buffer[3] >> 31u) != 0 ? buffer[3] & 0xffffu : Pm4::SH_NOP};
if (count_indirect == 0) {
count_addr = nullptr;