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GPU: In auto-indexed draws, VGT_INDX_OFFSET appears to be reused as a vertex offset.

This commit is contained in:
Dr. Chat 2016-06-17 20:19:38 -05:00
parent 9cabd0a776
commit d526d2febf
1 changed files with 4 additions and 1 deletions
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5
src/xenia/gpu/vulkan/vulkan_command_processor.cc
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@ -574,7 +574,8 @@ bool VulkanCommandProcessor::IssueDraw(PrimitiveType primitive_type,
if (!index_buffer_info) { if (!index_buffer_info) {
// Auto-indexed draw. // Auto-indexed draw.
uint32_t instance_count = 1; uint32_t instance_count = 1;
uint32_t first_vertex = 0; uint32_t first_vertex =
register_file_->values[XE_GPU_REG_VGT_INDX_OFFSET].u32;
uint32_t first_instance = 0; uint32_t first_instance = 0;
vkCmdDraw(command_buffer, index_count, instance_count, first_vertex, vkCmdDraw(command_buffer, index_count, instance_count, first_vertex,
first_instance); first_instance);
@ -709,6 +710,8 @@ bool VulkanCommandProcessor::PopulateVertexBuffers(
break; break;
} }
assert_true(fetch->type == 0x3);
// TODO(benvanik): compute based on indices or vertex count. // TODO(benvanik): compute based on indices or vertex count.
// THIS CAN BE MASSIVELY INCORRECT (too large). // THIS CAN BE MASSIVELY INCORRECT (too large).
size_t valid_range = size_t(fetch->size * 4); size_t valid_range = size_t(fetch->size * 4);