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- only calculate gradients once

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This commit is contained in:
Magnus Norddahl 2017-04-01 04:38:15 +02:00
parent 6db89a2ce1
commit da6bfe65ff
4 changed files with 38 additions and 54 deletions
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26
src/polyrenderer/drawers/poly_drawer32_sse2.h
View file

@ -319,17 +319,9 @@ private:
// Calculate gradients
const TriVertex &v1 = *args->v1;
const TriVertex &v2 = *args->v2;
const TriVertex &v3 = *args->v3;
ScreenTriangleStepVariables gradientX;
ScreenTriangleStepVariables gradientY;
ScreenTriangleStepVariables gradientX = args->gradientX;
ScreenTriangleStepVariables gradientY = args->gradientY;
ScreenTriangleStepVariables blockPosY;
gradientX.W = FindGradientX(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
gradientY.W = FindGradientY(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
gradientX.U = FindGradientX(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.u * v1.w, v2.u * v2.w, v3.u * v3.w);
gradientY.U = FindGradientY(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.u * v1.w, v2.u * v2.w, v3.u * v3.w);
gradientX.V = FindGradientX(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.v * v1.w, v2.v * v2.w, v3.v * v3.w);
gradientY.V = FindGradientY(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.v * v1.w, v2.v * v2.w, v3.v * v3.w);
blockPosY.W = v1.w + gradientX.W * (destX - v1.x) + gradientY.W * (destY - v1.y);
blockPosY.U = v1.u * v1.w + gradientX.U * (destX - v1.x) + gradientY.U * (destY - v1.y);
blockPosY.V = v1.v * v1.w + gradientX.V * (destX - v1.x) + gradientY.V * (destY - v1.y);
@ -645,20 +637,6 @@ private:
}
}
}
static float FindGradientX(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
{
float top = (c1 - c2) * (y0 - y2) - (c0 - c2) * (y1 - y2);
float bottom = (x1 - x2) * (y0 - y2) - (x0 - x2) * (y1 - y2);
return top / bottom;
}
static float FindGradientY(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
{
float top = (c1 - c2) * (x0 - x2) - (c0 - c2) * (x1 - x2);
float bottom = (x0 - x2) * (y1 - y2) - (x1 - x2) * (y0 - y2);
return top / bottom;
}
};
template<typename BlendT, typename SamplerT>

27
src/polyrenderer/drawers/poly_drawer8.h
View file

@ -221,17 +221,9 @@ public:
// Calculate gradients
const TriVertex &v1 = *args->v1;
const TriVertex &v2 = *args->v2;
const TriVertex &v3 = *args->v3;
ScreenTriangleStepVariables gradientX;
ScreenTriangleStepVariables gradientY;
ScreenTriangleStepVariables gradientX = args->gradientX;
ScreenTriangleStepVariables gradientY = args->gradientY;
ScreenTriangleStepVariables blockPosY;
gradientX.W = FindGradientX(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
gradientY.W = FindGradientY(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
gradientX.U = FindGradientX(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.u * v1.w, v2.u * v2.w, v3.u * v3.w);
gradientY.U = FindGradientY(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.u * v1.w, v2.u * v2.w, v3.u * v3.w);
gradientX.V = FindGradientX(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.v * v1.w, v2.v * v2.w, v3.v * v3.w);
gradientY.V = FindGradientY(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.v * v1.w, v2.v * v2.w, v3.v * v3.w);
blockPosY.W = v1.w + gradientX.W * (destX - v1.x) + gradientY.W * (destY - v1.y);
blockPosY.U = v1.u * v1.w + gradientX.U * (destX - v1.x) + gradientY.U * (destY - v1.y);
blockPosY.V = v1.v * v1.w + gradientX.V * (destX - v1.x) + gradientY.V * (destY - v1.y);
@ -405,21 +397,6 @@ public:
}
}
}
private:
static float FindGradientX(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
{
float top = (c1 - c2) * (y0 - y2) - (c0 - c2) * (y1 - y2);
float bottom = (x1 - x2) * (y0 - y2) - (x0 - x2) * (y1 - y2);
return top / bottom;
}
static float FindGradientY(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
{
float top = (c1 - c2) * (x0 - x2) - (c0 - c2) * (x1 - x2);
float bottom = (x0 - x2) * (y1 - y2) - (x1 - x2) * (y0 - y2);
return top / bottom;
}
};
template<typename BlendT, typename SamplerT>

2
src/polyrenderer/drawers/poly_triangle.cpp
View file

@ -227,6 +227,7 @@ void PolyTriangleDrawer::draw_shaded_triangle(const ShadedTriVertex *vert, bool
args->v1 = &clippedvert[numclipvert - 1];
args->v2 = &clippedvert[i - 1];
args->v3 = &clippedvert[i - 2];
args->CalculateGradients();
ScreenTriangle::Draw(args, thread);
}
@ -238,6 +239,7 @@ void PolyTriangleDrawer::draw_shaded_triangle(const ShadedTriVertex *vert, bool
args->v1 = &clippedvert[0];
args->v2 = &clippedvert[i - 1];
args->v3 = &clippedvert[i];
args->CalculateGradients();
ScreenTriangle::Draw(args, thread);
}

37
src/polyrenderer/drawers/screen_triangle.h
View file

@ -43,6 +43,11 @@ struct TriVertex
float u, v;
};
struct ScreenTriangleStepVariables
{
float W, U, V;
};
struct TriDrawTriangleArgs
{
uint8_t *dest;
@ -58,6 +63,33 @@ struct TriDrawTriangleArgs
uint32_t *subsectorGBuffer;
const PolyDrawArgs *uniforms;
bool destBgra;
ScreenTriangleStepVariables gradientX;
ScreenTriangleStepVariables gradientY;
void CalculateGradients()
{
gradientX.W = FindGradientX(v1->x, v1->y, v2->x, v2->y, v3->x, v3->y, v1->w, v2->w, v3->w);
gradientY.W = FindGradientY(v1->x, v1->y, v2->x, v2->y, v3->x, v3->y, v1->w, v2->w, v3->w);
gradientX.U = FindGradientX(v1->x, v1->y, v2->x, v2->y, v3->x, v3->y, v1->u * v1->w, v2->u * v2->w, v3->u * v3->w);
gradientY.U = FindGradientY(v1->x, v1->y, v2->x, v2->y, v3->x, v3->y, v1->u * v1->w, v2->u * v2->w, v3->u * v3->w);
gradientX.V = FindGradientX(v1->x, v1->y, v2->x, v2->y, v3->x, v3->y, v1->v * v1->w, v2->v * v2->w, v3->v * v3->w);
gradientY.V = FindGradientY(v1->x, v1->y, v2->x, v2->y, v3->x, v3->y, v1->v * v1->w, v2->v * v2->w, v3->v * v3->w);
}
private:
static float FindGradientX(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
{
float top = (c1 - c2) * (y0 - y2) - (c0 - c2) * (y1 - y2);
float bottom = (x1 - x2) * (y0 - y2) - (x0 - x2) * (y1 - y2);
return top / bottom;
}
static float FindGradientY(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
{
float top = (c1 - c2) * (x0 - x2) - (c0 - c2) * (x1 - x2);
float bottom = (x0 - x2) * (y1 - y2) - (x1 - x2) * (y0 - y2);
return top / bottom;
}
};
class RectDrawArgs;
@ -99,11 +131,6 @@ public:
static void(*RectDrawers32[])(const void *, int, int, int, const RectDrawArgs *, WorkerThreadData *);
};
struct ScreenTriangleStepVariables
{
float W, U, V;
};
namespace TriScreenDrawerModes
{
enum class BlendModes { Opaque, Masked, AddClamp, SubClamp, RevSubClamp, AddSrcColorOneMinusSrcColor, Shaded, AddClampShaded };