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Implement depth clamp

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This commit is contained in:
Magnus Norddahl 2021-03-02 00:24:36 +01:00 committed by Christoph Oelckers
parent d6f8e80177
commit 996b4f9f5c
2 changed files with 24 additions and 6 deletions
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29
src/common/rendering/polyrenderer/drawers/poly_thread.cpp
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@ -165,6 +165,7 @@ void PolyTriangleThreadData::SetViewpointUniforms(const HWViewpointUniforms *uni
void PolyTriangleThreadData::SetDepthClamp(bool on)
{
DepthClamp = on;
}
void PolyTriangleThreadData::SetDepthMask(bool on)
@ -430,8 +431,16 @@ void PolyTriangleThreadData::DrawShadedLine(const ShadedTriVertex *const* vert)
clipd[1] = v.gl_Position.W - v.gl_Position.X;
clipd[2] = v.gl_Position.Y + v.gl_Position.W;
clipd[3] = v.gl_Position.W - v.gl_Position.Y;
clipd[4] = v.gl_Position.Z + v.gl_Position.W;
clipd[5] = v.gl_Position.W - v.gl_Position.Z;
if (DepthClamp)
{
clipd[4] = 1.0f;
clipd[5] = 1.0f;
}
else
{
clipd[4] = v.gl_Position.Z + v.gl_Position.W;
clipd[5] = v.gl_Position.W - v.gl_Position.Z;
}
clipd[6] = v.gl_ClipDistance[0];
clipd[7] = v.gl_ClipDistance[1];
clipd[8] = v.gl_ClipDistance[2];
@ -684,8 +693,16 @@ int PolyTriangleThreadData::ClipEdge(const ShadedTriVertex *const* verts)
clipd[1] = v.gl_Position.W - v.gl_Position.X;
clipd[2] = v.gl_Position.Y + v.gl_Position.W;
clipd[3] = v.gl_Position.W - v.gl_Position.Y;
clipd[4] = v.gl_Position.Z + v.gl_Position.W;
clipd[5] = v.gl_Position.W - v.gl_Position.Z;
if (DepthClamp)
{
clipd[4] = 1.0f;
clipd[5] = 1.0f;
}
else
{
clipd[4] = v.gl_Position.Z + v.gl_Position.W;
clipd[5] = v.gl_Position.W - v.gl_Position.Z;
}
clipd[6] = v.gl_ClipDistance[0];
clipd[7] = v.gl_ClipDistance[1];
clipd[8] = v.gl_ClipDistance[2];
@ -709,8 +726,8 @@ int PolyTriangleThreadData::ClipEdge(const ShadedTriVertex *const* verts)
__m128 clipd1 = _mm_sub_ps(mw, mx);
__m128 clipd2 = _mm_add_ps(my, mw);
__m128 clipd3 = _mm_sub_ps(mw, my);
__m128 clipd4 = _mm_add_ps(mz, mw);
__m128 clipd5 = _mm_sub_ps(mw, mz);
__m128 clipd4 = DepthClamp ? _mm_set1_ps(1.0f) : _mm_add_ps(mz, mw);
__m128 clipd5 = DepthClamp ? _mm_set1_ps(1.0f) : _mm_sub_ps(mw, mz);
__m128 clipd6 = _mm_setr_ps(verts[0]->gl_ClipDistance[0], verts[1]->gl_ClipDistance[0], verts[2]->gl_ClipDistance[0], 0.0f);
__m128 clipd7 = _mm_setr_ps(verts[0]->gl_ClipDistance[1], verts[1]->gl_ClipDistance[1], verts[2]->gl_ClipDistance[1], 0.0f);
__m128 clipd8 = _mm_setr_ps(verts[0]->gl_ClipDistance[2], verts[1]->gl_ClipDistance[2], verts[2]->gl_ClipDistance[2], 0.0f);

1
src/common/rendering/polyrenderer/drawers/poly_thread.h
View file

@ -176,6 +176,7 @@ public:
uint8_t StencilWriteValue = 0;
float DepthRangeStart = 0.0f;
float DepthRangeScale = 1.0f;
bool DepthClamp = true;
void (*FragmentShader)(int x0, int x1, PolyTriangleThreadData* thread) = nullptr;
void (*WriteColorFunc)(int y, int x0, int x1, PolyTriangleThreadData* thread) = nullptr;