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graphics: honor read-only stencil targets

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This commit is contained in:
nmzik
2026-08-20 09:47:03 +02:00
parent 8021150ea2
commit 1190d5de7d
3 changed files with 59 additions and 16 deletions
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src/graphics/host_gpu/renderer/depthRenderTarget.cpp
+12 -7
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@@ -185,8 +185,9 @@ void RenderExecutor::ResolveRenderDepthTarget(uint64_t submit_id, RenderCommandB
if (has_stencil) {
if (z.stencil_info.format != Prospero::StencilFormat::k8UInt || !htile_stencil_compat ||
z.stencil_read_base_addr == 0 ||
z.stencil_write_base_addr != z.stencil_read_base_addr ||
(z.stencil_read_base_addr & 0xffffu) != 0 || z.depth_view.stencil_write_disable) {
(!z.depth_view.stencil_write_disable &&
z.stencil_write_base_addr != z.stencil_read_base_addr) ||
(z.stencil_read_base_addr & 0xffffu) != 0) {
DepthFatal("unsupported stencil attachment state");
}
} else if (z.stencil_read_base_addr != 0 || z.stencil_write_base_addr != 0 ||
@@ -287,18 +288,22 @@ void RenderExecutor::ResolveRenderDepthTarget(uint64_t submit_id, RenderCommandB
r.depth_min_bounds = hw.GetDepthBoundsMin();
r.depth_max_bounds = hw.GetDepthBoundsMax();
r.stencil_clear_enable = has_stencil && rc.stencil_clear_enable;
r.stencil_clear_enable =
has_stencil && rc.stencil_clear_enable && !z.depth_view.stencil_write_disable;
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;
const bool stencil_ops_disabled =
rc.stencil_clear_enable || z.depth_view.stencil_write_disable;
const uint8_t front_write_mask = stencil_ops_disabled ? 0 : sm.stencil_writemask;
const uint8_t back_write_mask = stencil_ops_disabled ? 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)) ||
(UsesStencilOpValue(sc.stencil_fail, sc.stencil_zpass, sc.stencil_zfail) &&
(front_write_mask != 0 &&
UsesStencilOpValue(sc.stencil_fail, sc.stencil_zpass, sc.stencil_zfail) &&
sm.stencil_opval != sm.stencil_testval) ||
(dc.backface_enable &&
(dc.backface_enable && back_write_mask != 0 &&
UsesStencilOpValue(sc.stencil_fail_bf, sc.stencil_zpass_bf, sc.stencil_zfail_bf) &&
sm.stencil_opval_bf != sm.stencil_testval_bf)) {
DepthFatal("unsupported stencil compare or replacement state");