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BBOX: Avoid z clipping issues by culling in clip space.

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This commit is contained in:
Henrik Rydgård
2026-06-03 10:05:21 +02:00
parent b07fce1566
commit ab108f7f0c
2 changed files with 36 additions and 20 deletions
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GPU/GPUCommon.cpp
+12 -7
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@@ -7,6 +7,7 @@
#include "Common/GraphicsContext.h"
#include "Common/LogReporting.h"
#include "Common/Math/SIMDHeaders.h"
#include "Common/Math/CrossSIMD.h"
#include "Common/Serialize/Serializer.h"
#include "Common/Serialize/SerializeFuncs.h"
#include "Common/Serialize/SerializeList.h"
@@ -1232,6 +1233,7 @@ void GPUCommon::Execute_BoundingBox(u32 op, u32 diff) {
int checkSize = count - 0x100;
currentList->bboxResult = drawEngineCommon_->TestBoundingBox(control_points, inds, checkSize, dec, vertType);
} else {
// This is the normal case that pretty much always happens, the others are esoteric.
currentList->bboxResult = drawEngineCommon_->TestBoundingBox(control_points, inds, count, dec, vertType);
}
AdvanceVerts(gstate.vertType, count, bytesRead);
@@ -2197,18 +2199,21 @@ bool GPUCommon::SetRestrictPrims(std::string_view rule) {
}
void GPUCommon::UpdateMatrixProducts() {
// We clean the dirty flags at the end.
// Compute any dirty product matrices.
if (gstate_c.IsDirty(DIRTY_VIEW_PROJ_MATRIX)) {
float view[4 * 4];
ConvertMatrix4x3To4x4(view, gstate.viewMatrix);
Matrix4ByMatrix4(gstate_c.viewproj, view, gstate.projMatrix);
gstate_c.Clean(DIRTY_VIEW_PROJ_MATRIX);
Mat4x3F32 view(gstate.viewMatrix);
Mat4F32 proj(gstate.projMatrix);
Mul4x3By4x4(view, proj).Store(gstate_c.viewproj);
}
if (gstate_c.IsDirty(DIRTY_WORLD_VIEW_PROJ_MATRIX)) {
float world[4 * 4];
ConvertMatrix4x3To4x4(world, gstate.worldMatrix);
Matrix4ByMatrix4(gstate_c.worldviewproj, world, gstate_c.viewproj);
Mat4x3F32 world(gstate.worldMatrix);
Mat4F32 viewproj(gstate_c.viewproj);
Mul4x3By4x4(world, viewproj).Store(gstate_c.worldviewproj);
}
if (gstate_c.IsDirty(DIRTY_CULL_MATRIX)) {
// Modify the transform matrix to take the viewport into account before culling. This is not necessary
// for most games, but there are games that rely on outside-viewport draws (such as Dante's Inferno)'s post