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renderer: lower masked stencil xor exactly

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This commit is contained in:
nmzik
2026-08-07 19:13:21 +02:00
parent 5125cd09c7
commit d4f8338937
1 changed files with 28 additions and 14 deletions
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src/graphics/host_gpu/renderer/depthRenderTarget.cpp
+28 -14
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@@ -38,7 +38,10 @@ namespace Libs::Graphics {
EXIT("unsupported render state; details were printed above\n");
}
static vk::StencilOp ConvertStencilOp(uint8_t value) {
static vk::StencilOp ConvertStencilOp(uint8_t value, uint8_t write_mask, uint8_t op_value) {
if (write_mask == 0) {
return vk::StencilOp::eKeep;
}
switch (static_cast<Prospero::StencilOp>(value)) {
case Prospero::StencilOp::kKeep: return vk::StencilOp::eKeep;
case Prospero::StencilOp::kZero: return vk::StencilOp::eZero;
@@ -49,7 +52,17 @@ static vk::StencilOp ConvertStencilOp(uint8_t value) {
case Prospero::StencilOp::kInvert: return vk::StencilOp::eInvert;
case Prospero::StencilOp::kAddWrap: return vk::StencilOp::eIncrementAndWrap;
case Prospero::StencilOp::kSubWrap: return vk::StencilOp::eDecrementAndWrap;
default: DepthFatal("unsupported stencil operation");
case Prospero::StencilOp::kXor:
if ((write_mask & op_value) == 0) {
return vk::StencilOp::eKeep;
}
if ((write_mask & ~op_value) != 0) {
DepthFatal("unsupported stencil XOR operands: write mask=0x%02" PRIx8
", operation value=0x%02" PRIx8,
write_mask, op_value);
}
return vk::StencilOp::eInvert;
default: DepthFatal("unsupported stencil operation: 0x%02" PRIx8, value);
}
}
@@ -283,6 +296,8 @@ void RenderExecutor::ResolveRenderDepthTarget(uint64_t submit_id, RenderCommandB
r.stencil_clear_value = hw.GetStencilClearValue();
r.stencil_test_enable = has_stencil && dc.stencil_enable;
if (r.stencil_test_enable) {
const uint8_t front_write_mask = rc.stencil_clear_enable ? 0 : sm.stencil_writemask;
const uint8_t back_write_mask = rc.stencil_clear_enable ? 0 : sm.stencil_writemask_bf;
if (dc.stencilfunc > static_cast<uint8_t>(vk::CompareOp::eAlways) ||
(dc.backface_enable &&
dc.stencilfunc_bf > static_cast<uint8_t>(vk::CompareOp::eAlways)) ||
@@ -294,19 +309,18 @@ void RenderExecutor::ResolveRenderDepthTarget(uint64_t submit_id, RenderCommandB
DepthFatal("unsupported stencil compare or replacement state");
}
r.stencil_static_front = {
ConvertStencilOp(sc.stencil_fail), ConvertStencilOp(sc.stencil_zpass),
ConvertStencilOp(sc.stencil_zfail), static_cast<vk::CompareOp>(dc.stencilfunc)};
r.stencil_dynamic_front = {sm.stencil_mask,
rc.stencil_clear_enable ? 0u : sm.stencil_writemask,
sm.stencil_testval};
ConvertStencilOp(sc.stencil_fail, front_write_mask, sm.stencil_opval),
ConvertStencilOp(sc.stencil_zpass, front_write_mask, sm.stencil_opval),
ConvertStencilOp(sc.stencil_zfail, front_write_mask, sm.stencil_opval),
static_cast<vk::CompareOp>(dc.stencilfunc)};
r.stencil_dynamic_front = {sm.stencil_mask, front_write_mask, sm.stencil_testval};
if (dc.backface_enable) {
r.stencil_static_back = {ConvertStencilOp(sc.stencil_fail_bf),
ConvertStencilOp(sc.stencil_zpass_bf),
ConvertStencilOp(sc.stencil_zfail_bf),
static_cast<vk::CompareOp>(dc.stencilfunc_bf)};
r.stencil_dynamic_back = {sm.stencil_mask_bf,
rc.stencil_clear_enable ? 0u : sm.stencil_writemask_bf,
sm.stencil_testval_bf};
r.stencil_static_back = {
ConvertStencilOp(sc.stencil_fail_bf, back_write_mask, sm.stencil_opval_bf),
ConvertStencilOp(sc.stencil_zpass_bf, back_write_mask, sm.stencil_opval_bf),
ConvertStencilOp(sc.stencil_zfail_bf, back_write_mask, sm.stencil_opval_bf),
static_cast<vk::CompareOp>(dc.stencilfunc_bf)};
r.stencil_dynamic_back = {sm.stencil_mask_bf, back_write_mask, sm.stencil_testval_bf};
} else {
r.stencil_static_back = r.stencil_static_front;
r.stencil_dynamic_back = r.stencil_dynamic_front;