mirror of
https://github.com/ZDoom/gzdoom-gles.git
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Move triangle drawer into a command and change the sky code to use it if r_cubesky is enabled
This commit is contained in:
Magnus Norddahl
parent
ea72152c31
commit
d5865a46a0
5 changed files with 505 additions and 418 deletions
13
src/r_draw.h
13
src/r_draw.h
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@ -387,6 +387,19 @@ void R_DrawSingleSkyCol4(uint32_t solid_top, uint32_t solid_bottom);
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void R_DrawDoubleSkyCol1(uint32_t solid_top, uint32_t solid_bottom);
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void R_DrawDoubleSkyCol1(uint32_t solid_top, uint32_t solid_bottom);
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void R_DrawDoubleSkyCol4(uint32_t solid_top, uint32_t solid_bottom);
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void R_DrawDoubleSkyCol4(uint32_t solid_top, uint32_t solid_bottom);
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struct TriVertex
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{
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TriVertex() { }
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TriVertex(float x, float y, float z, float w, float u, float v, float light) : x(x), y(y), z(z), w(w) { varying[0] = u; varying[1] = v; varying[2] = light; }
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enum { NumVarying = 3 };
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float x, y, z, w;
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float varying[NumVarying];
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};
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class VSMatrix;
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void R_DrawTriangles(const VSMatrix &objectToWorld, const TriVertex *vertices, int count, int clipleft, int clipright, const short *cliptop, const short *clipbottom);
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extern bool r_swtruecolor;
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extern bool r_swtruecolor;
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EXTERN_CVAR(Bool, r_multithreaded);
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EXTERN_CVAR(Bool, r_multithreaded);
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@ -1257,458 +1257,437 @@ void ApplySpecialColormapRGBACommand::Execute(DrawerThread *thread)
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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struct TriVertex
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class DrawTrianglesCommand : public DrawerCommand
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{
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{
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TriVertex() { }
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public:
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TriVertex(float x, float y, float z, float w, float u, float v, float light) : x(x), y(y), z(z), w(w) { varying[0] = u; varying[1] = v; varying[2] = light; }
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DrawTrianglesCommand(const VSMatrix &objectToWorld, const TriVertex *vertices, int count, int clipleft, int clipright, const short *clipdata)
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: objectToWorld(objectToWorld), vertices(vertices), count(count), clipleft(clipleft), clipright(clipright), clipdata(clipdata)
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enum { NumVarying = 3 };
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float x, y, z, w;
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float varying[NumVarying];
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};
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float gradx(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
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{
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float top = (c1 - c2) * (y0 - y2) - (c0 - c2) * (y1 - y2);
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float bottom = (x1 - x2) * (y0 - y2) - (x0 - x2) * (y1 - y2);
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return top / bottom;
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}
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float grady(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
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{
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float top = (c1 - c2) * (x0 - x2) - (c0 - c2) * (x1 - x2);
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float bottom = -((x1 - x2) * (y0 - y2) - (x0 - x2) * (y1 - y2));
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return top / bottom;
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}
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void triangle(uint32_t *dest, int pitch, const TriVertex &v1, const TriVertex &v2, const TriVertex &v3, int clipleft, int clipright, const short *cliptop, const short *clipbottom)
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{
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// 28.4 fixed-point coordinates
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const int Y1 = (int)round(16.0f * v1.y);
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const int Y2 = (int)round(16.0f * v2.y);
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const int Y3 = (int)round(16.0f * v3.y);
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const int X1 = (int)round(16.0f * v1.x);
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const int X2 = (int)round(16.0f * v2.x);
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const int X3 = (int)round(16.0f * v3.x);
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// Deltas
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const int DX12 = X1 - X2;
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const int DX23 = X2 - X3;
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const int DX31 = X3 - X1;
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const int DY12 = Y1 - Y2;
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const int DY23 = Y2 - Y3;
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const int DY31 = Y3 - Y1;
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// Fixed-point deltas
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const int FDX12 = DX12 << 4;
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const int FDX23 = DX23 << 4;
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const int FDX31 = DX31 << 4;
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const int FDY12 = DY12 << 4;
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const int FDY23 = DY23 << 4;
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const int FDY31 = DY31 << 4;
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// Bounding rectangle
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int clipymin = cliptop[clipleft];
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int clipymax = clipbottom[clipleft];
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for (int i = clipleft + 1; i <= clipright; i++)
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{
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{
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clipymin = MIN(clipymin, (int)cliptop[i]);
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clipymax = MAX(clipymax, (int)clipbottom[i]);
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}
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int minx = MAX((MIN(MIN(X1, X2), X3) + 0xF) >> 4, clipleft);
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int maxx = MIN((MAX(MAX(X1, X2), X3) + 0xF) >> 4, clipright);
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int miny = MAX((MIN(MIN(Y1, Y2), Y3) + 0xF) >> 4, clipymin);
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int maxy = MIN((MAX(MAX(Y1, Y2), Y3) + 0xF) >> 4, clipymax);
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if (minx >= maxx || miny >= maxy)
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return;
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// Block size, standard 8x8 (must be power of two)
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const int q = 8;
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// Start in corner of 8x8 block
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minx &= ~(q - 1);
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miny &= ~(q - 1);
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dest += miny * pitch;
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// Half-edge constants
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int C1 = DY12 * X1 - DX12 * Y1;
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int C2 = DY23 * X2 - DX23 * Y2;
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int C3 = DY31 * X3 - DX31 * Y3;
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// Correct for fill convention
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if (DY12 < 0 || (DY12 == 0 && DX12 > 0)) C1++;
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if (DY23 < 0 || (DY23 == 0 && DX23 > 0)) C2++;
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if (DY31 < 0 || (DY31 == 0 && DX31 > 0)) C3++;
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// Gradients
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float gradWX = gradx(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
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float gradWY = grady(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
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float startW = v1.w + gradWX * (minx - v1.x) + gradWY * (miny - v1.y);
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float gradVaryingX[TriVertex::NumVarying], gradVaryingY[TriVertex::NumVarying], startVarying[TriVertex::NumVarying];
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for (int i = 0; i < TriVertex::NumVarying; i++)
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{
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gradVaryingX[i] = gradx(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.varying[i] * v1.w, v2.varying[i] * v2.w, v3.varying[i] * v3.w);
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gradVaryingY[i] = grady(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.varying[i] * v1.w, v2.varying[i] * v2.w, v3.varying[i] * v3.w);
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startVarying[i] = v1.varying[i] * v1.w + gradVaryingX[i] * (minx - v1.x) + gradVaryingY[i] * (miny - v1.y);
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}
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}
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// Loop through blocks
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void Execute(DrawerThread *thread) override
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for (int y = miny; y < maxy; y += q)
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{
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{
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for (int x = minx; x < maxx; x += q)
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int cliplength = clipright - clipleft + 1;
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for (int i = 0; i < cliplength; i++)
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{
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{
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// Corners of block
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thread->triangle_clip_top[clipleft + i] = clipdata[i];
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int x0 = x << 4;
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thread->triangle_clip_bottom[clipleft + i] = clipdata[cliplength + i];
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int x1 = (x + q - 1) << 4;
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}
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int y0 = y << 4;
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int y1 = (y + q - 1) << 4;
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// Evaluate half-space functions
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draw_triangles(objectToWorld, vertices, count, clipleft, clipright, thread->triangle_clip_top, thread->triangle_clip_bottom, thread);
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bool a00 = C1 + DX12 * y0 - DY12 * x0 > 0;
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}
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bool a10 = C1 + DX12 * y0 - DY12 * x1 > 0;
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bool a01 = C1 + DX12 * y1 - DY12 * x0 > 0;
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bool a11 = C1 + DX12 * y1 - DY12 * x1 > 0;
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int a = (a00 << 0) | (a10 << 1) | (a01 << 2) | (a11 << 3);
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bool b00 = C2 + DX23 * y0 - DY23 * x0 > 0;
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FString DebugInfo() override
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bool b10 = C2 + DX23 * y0 - DY23 * x1 > 0;
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{
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bool b01 = C2 + DX23 * y1 - DY23 * x0 > 0;
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return "DrawTrianglesCommand";
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bool b11 = C2 + DX23 * y1 - DY23 * x1 > 0;
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}
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int b = (b00 << 0) | (b10 << 1) | (b01 << 2) | (b11 << 3);
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bool c00 = C3 + DX31 * y0 - DY31 * x0 > 0;
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private:
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bool c10 = C3 + DX31 * y0 - DY31 * x1 > 0;
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float gradx(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
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bool c01 = C3 + DX31 * y1 - DY31 * x0 > 0;
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{
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bool c11 = C3 + DX31 * y1 - DY31 * x1 > 0;
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float top = (c1 - c2) * (y0 - y2) - (c0 - c2) * (y1 - y2);
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int c = (c00 << 0) | (c10 << 1) | (c01 << 2) | (c11 << 3);
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float bottom = (x1 - x2) * (y0 - y2) - (x0 - x2) * (y1 - y2);
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return top / bottom;
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}
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// Skip block when outside an edge
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float grady(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
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if (a == 0x0 || b == 0x0 || c == 0x0) continue;
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{
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float top = (c1 - c2) * (x0 - x2) - (c0 - c2) * (x1 - x2);
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float bottom = -((x1 - x2) * (y0 - y2) - (x0 - x2) * (y1 - y2));
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return top / bottom;
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}
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// Check if block needs clipping
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void triangle(uint32_t *dest, int pitch, const TriVertex &v1, const TriVertex &v2, const TriVertex &v3, int clipleft, int clipright, const short *cliptop, const short *clipbottom, DrawerThread *thread)
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int clipcount = 0;
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{
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for (int ix = 0; ix < q; ix++)
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// 28.4 fixed-point coordinates
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const int Y1 = (int)round(16.0f * v1.y);
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const int Y2 = (int)round(16.0f * v2.y);
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const int Y3 = (int)round(16.0f * v3.y);
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const int X1 = (int)round(16.0f * v1.x);
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const int X2 = (int)round(16.0f * v2.x);
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const int X3 = (int)round(16.0f * v3.x);
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// Deltas
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const int DX12 = X1 - X2;
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const int DX23 = X2 - X3;
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const int DX31 = X3 - X1;
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const int DY12 = Y1 - Y2;
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const int DY23 = Y2 - Y3;
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const int DY31 = Y3 - Y1;
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// Fixed-point deltas
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const int FDX12 = DX12 << 4;
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const int FDX23 = DX23 << 4;
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const int FDX31 = DX31 << 4;
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const int FDY12 = DY12 << 4;
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const int FDY23 = DY23 << 4;
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const int FDY31 = DY31 << 4;
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// Bounding rectangle
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int clipymin = cliptop[clipleft];
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int clipymax = clipbottom[clipleft];
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for (int i = clipleft + 1; i <= clipright; i++)
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{
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clipymin = MIN(clipymin, (int)cliptop[i]);
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clipymax = MAX(clipymax, (int)clipbottom[i]);
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}
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int minx = MAX((MIN(MIN(X1, X2), X3) + 0xF) >> 4, clipleft);
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int maxx = MIN((MAX(MAX(X1, X2), X3) + 0xF) >> 4, clipright);
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int miny = MAX((MIN(MIN(Y1, Y2), Y3) + 0xF) >> 4, clipymin);
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int maxy = MIN((MAX(MAX(Y1, Y2), Y3) + 0xF) >> 4, clipymax);
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if (minx >= maxx || miny >= maxy)
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return;
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// Block size, standard 8x8 (must be power of two)
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const int q = 8;
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// Start in corner of 8x8 block
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minx &= ~(q - 1);
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miny &= ~(q - 1);
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dest += miny * pitch;
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// Half-edge constants
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int C1 = DY12 * X1 - DX12 * Y1;
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int C2 = DY23 * X2 - DX23 * Y2;
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int C3 = DY31 * X3 - DX31 * Y3;
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// Correct for fill convention
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if (DY12 < 0 || (DY12 == 0 && DX12 > 0)) C1++;
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if (DY23 < 0 || (DY23 == 0 && DX23 > 0)) C2++;
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if (DY31 < 0 || (DY31 == 0 && DX31 > 0)) C3++;
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// Gradients
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float gradWX = gradx(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
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float gradWY = grady(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
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float startW = v1.w + gradWX * (minx - v1.x) + gradWY * (miny - v1.y);
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float gradVaryingX[TriVertex::NumVarying], gradVaryingY[TriVertex::NumVarying], startVarying[TriVertex::NumVarying];
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for (int i = 0; i < TriVertex::NumVarying; i++)
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{
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gradVaryingX[i] = gradx(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.varying[i] * v1.w, v2.varying[i] * v2.w, v3.varying[i] * v3.w);
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gradVaryingY[i] = grady(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.varying[i] * v1.w, v2.varying[i] * v2.w, v3.varying[i] * v3.w);
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startVarying[i] = v1.varying[i] * v1.w + gradVaryingX[i] * (minx - v1.x) + gradVaryingY[i] * (miny - v1.y);
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}
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// Loop through blocks
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for (int y = miny; y < maxy; y += q)
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{
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for (int x = minx; x < maxx; x += q)
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{
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{
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clipcount += (cliptop[x + ix] > y) || (clipbottom[x + ix] < y + q - 1);
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// Corners of block
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}
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int x0 = x << 4;
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int x1 = (x + q - 1) << 4;
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int y0 = y << 4;
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int y1 = (y + q - 1) << 4;
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// Calculate varying variables for affine block
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// Evaluate half-space functions
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float offx0 = (x - minx) + 0.5f;
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bool a00 = C1 + DX12 * y0 - DY12 * x0 > 0;
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float offy0 = (y - miny) + 0.5f;
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bool a10 = C1 + DX12 * y0 - DY12 * x1 > 0;
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float offx1 = offx0 + q;
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bool a01 = C1 + DX12 * y1 - DY12 * x0 > 0;
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float offy1 = offy0 + q;
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bool a11 = C1 + DX12 * y1 - DY12 * x1 > 0;
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float rcpWTL = 1.0f / (startW + offx0 * gradWX + offy0 * gradWY);
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int a = (a00 << 0) | (a10 << 1) | (a01 << 2) | (a11 << 3);
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float rcpWTR = 1.0f / (startW + offx1 * gradWX + offy0 * gradWY);
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float rcpWBL = 1.0f / (startW + offx0 * gradWX + offy1 * gradWY);
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float rcpWBR = 1.0f / (startW + offx1 * gradWX + offy1 * gradWY);
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float varyingTL[TriVertex::NumVarying];
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float varyingTR[TriVertex::NumVarying];
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float varyingBL[TriVertex::NumVarying];
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float varyingBR[TriVertex::NumVarying];
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for (int i = 0; i < TriVertex::NumVarying; i++)
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{
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varyingTL[i] = (startVarying[i] + offx0 * gradVaryingX[i] + offy0 * gradVaryingY[i]) * rcpWTL;
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|
||||||
varyingTR[i] = (startVarying[i] + offx1 * gradVaryingX[i] + offy0 * gradVaryingY[i]) * rcpWTR;
|
|
||||||
varyingBL[i] = ((startVarying[i] + offx0 * gradVaryingX[i] + offy1 * gradVaryingY[i]) * rcpWBL - varyingTL[i]) * (1.0f / q);
|
|
||||||
varyingBR[i] = ((startVarying[i] + offx1 * gradVaryingX[i] + offy1 * gradVaryingY[i]) * rcpWBR - varyingTR[i]) * (1.0f / q);
|
|
||||||
}
|
|
||||||
|
|
||||||
uint32_t *buffer = dest;
|
bool b00 = C2 + DX23 * y0 - DY23 * x0 > 0;
|
||||||
|
bool b10 = C2 + DX23 * y0 - DY23 * x1 > 0;
|
||||||
|
bool b01 = C2 + DX23 * y1 - DY23 * x0 > 0;
|
||||||
|
bool b11 = C2 + DX23 * y1 - DY23 * x1 > 0;
|
||||||
|
int b = (b00 << 0) | (b10 << 1) | (b01 << 2) | (b11 << 3);
|
||||||
|
|
||||||
// Accept whole block when totally covered
|
bool c00 = C3 + DX31 * y0 - DY31 * x0 > 0;
|
||||||
if (a == 0xF && b == 0xF && c == 0xF && clipcount == 0)
|
bool c10 = C3 + DX31 * y0 - DY31 * x1 > 0;
|
||||||
{
|
bool c01 = C3 + DX31 * y1 - DY31 * x0 > 0;
|
||||||
for (int iy = 0; iy < q; iy++)
|
bool c11 = C3 + DX31 * y1 - DY31 * x1 > 0;
|
||||||
|
int c = (c00 << 0) | (c10 << 1) | (c01 << 2) | (c11 << 3);
|
||||||
|
|
||||||
|
// Skip block when outside an edge
|
||||||
|
if (a == 0x0 || b == 0x0 || c == 0x0) continue;
|
||||||
|
|
||||||
|
// Check if block needs clipping
|
||||||
|
int clipcount = 0;
|
||||||
|
for (int ix = 0; ix < q; ix++)
|
||||||
{
|
{
|
||||||
float varying[TriVertex::NumVarying], varyingStep[TriVertex::NumVarying];
|
clipcount += (cliptop[x + ix] > y) || (clipbottom[x + ix] < y + q - 1);
|
||||||
for (int i = 0; i < TriVertex::NumVarying; i++)
|
|
||||||
{
|
|
||||||
varying[i] = varyingTL[i] + varyingBL[i] * iy;
|
|
||||||
varyingStep[i] = (varyingTR[i] + varyingBR[i] * iy - varying[i]) * (1.0f / q);
|
|
||||||
}
|
|
||||||
|
|
||||||
for (int ix = x; ix < x + q; ix++)
|
|
||||||
{
|
|
||||||
uint32_t red = (uint32_t)clamp(varying[0] * 255.0f + 0.5f, 0.0f, 255.0f);
|
|
||||||
uint32_t green = (uint32_t)clamp(varying[1] * 255.0f + 0.5f, 0.0f, 255.0f);
|
|
||||||
uint32_t blue = (uint32_t)clamp(varying[2] * 255.0f + 0.5f, 0.0f, 255.0f);
|
|
||||||
|
|
||||||
buffer[ix] = 0xff000000 | (red << 16) | (green << 8) | blue;
|
|
||||||
|
|
||||||
for (int i = 0; i < TriVertex::NumVarying; i++)
|
|
||||||
varying[i] += varyingStep[i];
|
|
||||||
}
|
|
||||||
|
|
||||||
buffer += pitch;
|
|
||||||
}
|
}
|
||||||
}
|
|
||||||
else // Partially covered block
|
|
||||||
{
|
|
||||||
int CY1 = C1 + DX12 * y0 - DY12 * x0;
|
|
||||||
int CY2 = C2 + DX23 * y0 - DY23 * x0;
|
|
||||||
int CY3 = C3 + DX31 * y0 - DY31 * x0;
|
|
||||||
|
|
||||||
for (int iy = 0; iy < q; iy++)
|
// Calculate varying variables for affine block
|
||||||
|
float offx0 = (x - minx) + 0.5f;
|
||||||
|
float offy0 = (y - miny) + 0.5f;
|
||||||
|
float offx1 = offx0 + q;
|
||||||
|
float offy1 = offy0 + q;
|
||||||
|
float rcpWTL = 1.0f / (startW + offx0 * gradWX + offy0 * gradWY);
|
||||||
|
float rcpWTR = 1.0f / (startW + offx1 * gradWX + offy0 * gradWY);
|
||||||
|
float rcpWBL = 1.0f / (startW + offx0 * gradWX + offy1 * gradWY);
|
||||||
|
float rcpWBR = 1.0f / (startW + offx1 * gradWX + offy1 * gradWY);
|
||||||
|
float varyingTL[TriVertex::NumVarying];
|
||||||
|
float varyingTR[TriVertex::NumVarying];
|
||||||
|
float varyingBL[TriVertex::NumVarying];
|
||||||
|
float varyingBR[TriVertex::NumVarying];
|
||||||
|
for (int i = 0; i < TriVertex::NumVarying; i++)
|
||||||
{
|
{
|
||||||
int CX1 = CY1;
|
varyingTL[i] = (startVarying[i] + offx0 * gradVaryingX[i] + offy0 * gradVaryingY[i]) * rcpWTL;
|
||||||
int CX2 = CY2;
|
varyingTR[i] = (startVarying[i] + offx1 * gradVaryingX[i] + offy0 * gradVaryingY[i]) * rcpWTR;
|
||||||
int CX3 = CY3;
|
varyingBL[i] = ((startVarying[i] + offx0 * gradVaryingX[i] + offy1 * gradVaryingY[i]) * rcpWBL - varyingTL[i]) * (1.0f / q);
|
||||||
|
varyingBR[i] = ((startVarying[i] + offx1 * gradVaryingX[i] + offy1 * gradVaryingY[i]) * rcpWBR - varyingTR[i]) * (1.0f / q);
|
||||||
|
}
|
||||||
|
|
||||||
float varying[TriVertex::NumVarying], varyingStep[TriVertex::NumVarying];
|
uint32_t *buffer = dest;
|
||||||
for (int i = 0; i < TriVertex::NumVarying; i++)
|
|
||||||
|
// Accept whole block when totally covered
|
||||||
|
if (a == 0xF && b == 0xF && c == 0xF && clipcount == 0)
|
||||||
|
{
|
||||||
|
for (int iy = 0; iy < q; iy++)
|
||||||
{
|
{
|
||||||
varying[i] = varyingTL[i] + varyingBL[i] * iy;
|
float varying[TriVertex::NumVarying], varyingStep[TriVertex::NumVarying];
|
||||||
varyingStep[i] = (varyingTR[i] + varyingBR[i] * iy - varying[i]) * (1.0f / q);
|
for (int i = 0; i < TriVertex::NumVarying; i++)
|
||||||
}
|
|
||||||
|
|
||||||
for (int ix = x; ix < x + q; ix++)
|
|
||||||
{
|
|
||||||
bool visible = (cliptop[ix] <= y + iy) && (clipbottom[ix] >= y + iy);
|
|
||||||
|
|
||||||
if (CX1 > 0 && CX2 > 0 && CX3 > 0 && visible)
|
|
||||||
{
|
{
|
||||||
uint32_t red = (uint32_t)clamp(varying[0] * 255.0f + 0.5f, 0.0f, 255.0f);
|
varying[i] = varyingTL[i] + varyingBL[i] * iy;
|
||||||
uint32_t green = (uint32_t)clamp(varying[1] * 255.0f + 0.5f, 0.0f, 255.0f);
|
varyingStep[i] = (varyingTR[i] + varyingBR[i] * iy - varying[i]) * (1.0f / q);
|
||||||
uint32_t blue = (uint32_t)clamp(varying[2] * 255.0f + 0.5f, 0.0f, 255.0f);
|
|
||||||
|
|
||||||
buffer[ix] = 0xff000000 | (red << 16) | (green << 8) | blue;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
for (int i = 0; i < TriVertex::NumVarying; i++)
|
if (!thread->skipped_by_thread(y + iy))
|
||||||
varying[i] += varyingStep[i];
|
{
|
||||||
|
for (int ix = x; ix < x + q; ix++)
|
||||||
|
{
|
||||||
|
uint32_t red = (uint32_t)clamp(varying[0] * 255.0f + 0.5f, 0.0f, 255.0f);
|
||||||
|
uint32_t green = (uint32_t)clamp(varying[1] * 255.0f + 0.5f, 0.0f, 255.0f);
|
||||||
|
uint32_t blue = (uint32_t)clamp(varying[2] * 255.0f + 0.5f, 0.0f, 255.0f);
|
||||||
|
|
||||||
CX1 -= FDY12;
|
buffer[ix] = 0xff000000 | (red << 16) | (green << 8) | blue;
|
||||||
CX2 -= FDY23;
|
|
||||||
CX3 -= FDY31;
|
for (int i = 0; i < TriVertex::NumVarying; i++)
|
||||||
|
varying[i] += varyingStep[i];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
buffer += pitch;
|
||||||
}
|
}
|
||||||
|
}
|
||||||
|
else // Partially covered block
|
||||||
|
{
|
||||||
|
int CY1 = C1 + DX12 * y0 - DY12 * x0;
|
||||||
|
int CY2 = C2 + DX23 * y0 - DY23 * x0;
|
||||||
|
int CY3 = C3 + DX31 * y0 - DY31 * x0;
|
||||||
|
|
||||||
CY1 += FDX12;
|
for (int iy = 0; iy < q; iy++)
|
||||||
CY2 += FDX23;
|
{
|
||||||
CY3 += FDX31;
|
int CX1 = CY1;
|
||||||
|
int CX2 = CY2;
|
||||||
|
int CX3 = CY3;
|
||||||
|
|
||||||
buffer += pitch;
|
float varying[TriVertex::NumVarying], varyingStep[TriVertex::NumVarying];
|
||||||
|
for (int i = 0; i < TriVertex::NumVarying; i++)
|
||||||
|
{
|
||||||
|
varying[i] = varyingTL[i] + varyingBL[i] * iy;
|
||||||
|
varyingStep[i] = (varyingTR[i] + varyingBR[i] * iy - varying[i]) * (1.0f / q);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!thread->skipped_by_thread(y + iy))
|
||||||
|
{
|
||||||
|
for (int ix = x; ix < x + q; ix++)
|
||||||
|
{
|
||||||
|
bool visible = (cliptop[ix] <= y + iy) && (clipbottom[ix] >= y + iy);
|
||||||
|
|
||||||
|
if (CX1 > 0 && CX2 > 0 && CX3 > 0 && visible)
|
||||||
|
{
|
||||||
|
uint32_t red = (uint32_t)clamp(varying[0] * 255.0f + 0.5f, 0.0f, 255.0f);
|
||||||
|
uint32_t green = (uint32_t)clamp(varying[1] * 255.0f + 0.5f, 0.0f, 255.0f);
|
||||||
|
uint32_t blue = (uint32_t)clamp(varying[2] * 255.0f + 0.5f, 0.0f, 255.0f);
|
||||||
|
|
||||||
|
buffer[ix] = 0xff000000 | (red << 16) | (green << 8) | blue;
|
||||||
|
}
|
||||||
|
|
||||||
|
for (int i = 0; i < TriVertex::NumVarying; i++)
|
||||||
|
varying[i] += varyingStep[i];
|
||||||
|
|
||||||
|
CX1 -= FDY12;
|
||||||
|
CX2 -= FDY23;
|
||||||
|
CX3 -= FDY31;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
CY1 += FDX12;
|
||||||
|
CY2 += FDX23;
|
||||||
|
CY3 += FDX31;
|
||||||
|
|
||||||
|
buffer += pitch;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
dest += q * pitch;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
bool cullhalfspace(float clipdistance1, float clipdistance2, float &t1, float &t2)
|
||||||
|
{
|
||||||
|
if (clipdistance1 < 0.0f && clipdistance2 < 0.0f)
|
||||||
|
return true;
|
||||||
|
|
||||||
|
if (clipdistance1 < 0.0f)
|
||||||
|
t1 = MAX(-clipdistance1 / (clipdistance2 - clipdistance1), t1);
|
||||||
|
|
||||||
|
if (clipdistance2 < 0.0f)
|
||||||
|
t2 = MIN(1.0f + clipdistance2 / (clipdistance1 - clipdistance2), t2);
|
||||||
|
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
void clipedge(const TriVertex &v1, const TriVertex &v2, TriVertex *clippedvert, int &numclipvert)
|
||||||
|
{
|
||||||
|
// Clip and cull so that the following is true for all vertices:
|
||||||
|
// -v.w <= v.x <= v.w
|
||||||
|
// -v.w <= v.y <= v.w
|
||||||
|
// -v.w <= v.z <= v.w
|
||||||
|
|
||||||
|
float t1 = 0.0f, t2 = 1.0f;
|
||||||
|
bool culled =
|
||||||
|
cullhalfspace(v1.x + v1.w, v2.x + v2.w, t1, t2) ||
|
||||||
|
cullhalfspace(v1.w - v1.x, v2.w - v2.x, t1, t2) ||
|
||||||
|
cullhalfspace(v1.y + v1.w, v2.y + v2.w, t1, t2) ||
|
||||||
|
cullhalfspace(v1.w - v1.y, v2.w - v2.y, t1, t2) ||
|
||||||
|
cullhalfspace(v1.z + v1.w, v2.z + v2.w, t1, t2) ||
|
||||||
|
cullhalfspace(v1.w - v1.z, v2.w - v2.z, t1, t2);
|
||||||
|
if (culled)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (t1 == 0.0f)
|
||||||
|
{
|
||||||
|
clippedvert[numclipvert++] = v1;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
auto &v = clippedvert[numclipvert++];
|
||||||
|
v.x = v1.x * (1.0f - t1) + v2.x * t1;
|
||||||
|
v.y = v1.y * (1.0f - t1) + v2.y * t1;
|
||||||
|
v.z = v1.z * (1.0f - t1) + v2.z * t1;
|
||||||
|
v.w = v1.w * (1.0f - t1) + v2.w * t1;
|
||||||
|
for (int i = 0; i < TriVertex::NumVarying; i++)
|
||||||
|
v.varying[i] = v1.varying[i] * (1.0f - t1) + v2.varying[i] * t1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (t2 != 1.0f)
|
||||||
|
{
|
||||||
|
auto &v = clippedvert[numclipvert++];
|
||||||
|
v.x = v1.x * (1.0f - t2) + v2.x * t2;
|
||||||
|
v.y = v1.y * (1.0f - t2) + v2.y * t2;
|
||||||
|
v.z = v1.z * (1.0f - t2) + v2.z * t2;
|
||||||
|
v.w = v1.w * (1.0f - t2) + v2.w * t2;
|
||||||
|
for (int i = 0; i < TriVertex::NumVarying; i++)
|
||||||
|
v.varying[i] = v1.varying[i] * (1.0f - t2) + v2.varying[i] * t2;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void draw_triangles(const VSMatrix &objectToWorld, const TriVertex *vinput, int vcount, int clipleft, int clipright, const short *cliptop, const short *clipbottom, DrawerThread *thread)
|
||||||
|
{
|
||||||
|
for (int i = 0; i < vcount / 3; i++)
|
||||||
|
{
|
||||||
|
TriVertex vert[3];
|
||||||
|
|
||||||
|
// Vertex shader stuff:
|
||||||
|
for (int j = 0; j < 3; j++)
|
||||||
|
{
|
||||||
|
auto &v = vert[j];
|
||||||
|
v = *(vinput++);
|
||||||
|
|
||||||
|
// Apply object to world transform:
|
||||||
|
const float *matrix = objectToWorld.get();
|
||||||
|
float vx = matrix[0 * 4 + 0] * v.x + matrix[1 * 4 + 0] * v.y + matrix[2 * 4 + 0] * v.z + matrix[3 * 4 + 0] * v.w;
|
||||||
|
float vy = matrix[0 * 4 + 1] * v.x + matrix[1 * 4 + 1] * v.y + matrix[2 * 4 + 1] * v.z + matrix[3 * 4 + 1] * v.w;
|
||||||
|
float vz = matrix[0 * 4 + 2] * v.x + matrix[1 * 4 + 2] * v.y + matrix[2 * 4 + 2] * v.z + matrix[3 * 4 + 2] * v.w;
|
||||||
|
float vw = matrix[0 * 4 + 3] * v.x + matrix[1 * 4 + 3] * v.y + matrix[2 * 4 + 3] * v.z + matrix[3 * 4 + 3] * v.w;
|
||||||
|
v.x = vx;
|
||||||
|
v.y = vy;
|
||||||
|
v.z = vz;
|
||||||
|
v.w = vw;
|
||||||
|
|
||||||
|
// The software renderer world to clip transform:
|
||||||
|
double nearp = 5.0f;
|
||||||
|
double farp = 65536.f;
|
||||||
|
double tr_x = v.x - ViewPos.X;
|
||||||
|
double tr_y = v.y - ViewPos.Y;
|
||||||
|
double tr_z = v.z - ViewPos.Z;
|
||||||
|
double tx = tr_x * ViewSin - tr_y * ViewCos;
|
||||||
|
double tz = tr_x * ViewTanCos + tr_y * ViewTanSin;
|
||||||
|
v.x = (float)tx;
|
||||||
|
v.y = (float)tr_z;
|
||||||
|
v.z = (float)(-tz * (farp + nearp) / (nearp - farp) + (2.0f * farp * nearp) / (nearp - farp));
|
||||||
|
v.w = (float)tz;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Cull, clip and generate additional vertices as needed
|
||||||
|
TriVertex clippedvert[6];
|
||||||
|
int numclipvert = 0;
|
||||||
|
clipedge(vert[0], vert[1], clippedvert, numclipvert);
|
||||||
|
clipedge(vert[1], vert[2], clippedvert, numclipvert);
|
||||||
|
clipedge(vert[2], vert[0], clippedvert, numclipvert);
|
||||||
|
|
||||||
|
// Map to 2D viewport:
|
||||||
|
for (int j = 0; j < numclipvert; j++)
|
||||||
|
{
|
||||||
|
auto &v = clippedvert[j];
|
||||||
|
|
||||||
|
// Calculate normalized device coordinates:
|
||||||
|
v.w = 1.0f / v.w;
|
||||||
|
v.x *= v.w;
|
||||||
|
v.y *= v.w;
|
||||||
|
v.z *= v.w;
|
||||||
|
|
||||||
|
// Apply viewport scale to get screen coordinates:
|
||||||
|
v.x = (float)(CenterX + v.x * CenterX);
|
||||||
|
v.y = (float)(CenterY - v.y * InvZtoScale);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Draw screen triangles
|
||||||
|
bool ccw = false;
|
||||||
|
if (ccw)
|
||||||
|
{
|
||||||
|
for (int i = numclipvert; i > 1; i--)
|
||||||
|
{
|
||||||
|
triangle((uint32_t*)dc_destorg, dc_pitch, clippedvert[numclipvert - 1], clippedvert[i - 1], clippedvert[i - 2], clipleft, clipright, cliptop, clipbottom, thread);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
for (int i = 2; i < numclipvert; i++)
|
||||||
|
{
|
||||||
|
triangle((uint32_t*)dc_destorg, dc_pitch, clippedvert[0], clippedvert[i - 1], clippedvert[i], clipleft, clipright, cliptop, clipbottom, thread);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
dest += q * pitch;
|
|
||||||
}
|
}
|
||||||
}
|
|
||||||
|
|
||||||
bool cullhalfspace(float clipdistance1, float clipdistance2, float &t1, float &t2)
|
VSMatrix objectToWorld;
|
||||||
|
const TriVertex *vertices;
|
||||||
|
int count;
|
||||||
|
int clipleft;
|
||||||
|
int clipright;
|
||||||
|
const short *clipdata;
|
||||||
|
};
|
||||||
|
|
||||||
|
void R_DrawTriangles(const VSMatrix &objectToWorld, const TriVertex *vertices, int count, int clipleft, int clipright, const short *cliptop, const short *clipbottom)
|
||||||
{
|
{
|
||||||
if (clipdistance1 < 0.0f && clipdistance2 < 0.0f)
|
if (clipright < clipleft || clipleft < 0 || clipright > MAXWIDTH)
|
||||||
return true;
|
|
||||||
|
|
||||||
if (clipdistance1 < 0.0f)
|
|
||||||
t1 = MAX(-clipdistance1 / (clipdistance2 - clipdistance1), t1);
|
|
||||||
|
|
||||||
if (clipdistance2 < 0.0f)
|
|
||||||
t2 = MIN(1.0f + clipdistance2 / (clipdistance1 - clipdistance2), t2);
|
|
||||||
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
void clipedge(const TriVertex &v1, const TriVertex &v2, TriVertex *clippedvert, int &numclipvert)
|
|
||||||
{
|
|
||||||
// Clip and cull so that the following is true for all vertices:
|
|
||||||
// -v.w <= v.x <= v.w
|
|
||||||
// -v.w <= v.y <= v.w
|
|
||||||
// -v.w <= v.z <= v.w
|
|
||||||
|
|
||||||
float t1 = 0.0f, t2 = 1.0f;
|
|
||||||
bool culled =
|
|
||||||
cullhalfspace(v1.x + v1.w, v2.x + v2.w, t1, t2) ||
|
|
||||||
cullhalfspace(v1.w - v1.x, v2.w - v2.x, t1, t2) ||
|
|
||||||
cullhalfspace(v1.y + v1.w, v2.y + v2.w, t1, t2) ||
|
|
||||||
cullhalfspace(v1.w - v1.y, v2.w - v2.y, t1, t2) ||
|
|
||||||
cullhalfspace(v1.z + v1.w, v2.z + v2.w, t1, t2) ||
|
|
||||||
cullhalfspace(v1.w - v1.z, v2.w - v2.z, t1, t2);
|
|
||||||
if (culled)
|
|
||||||
return;
|
return;
|
||||||
|
|
||||||
if (t1 == 0.0f)
|
int cliplength = clipright - clipleft + 1;
|
||||||
|
short *clipdata = (short*)DrawerCommandQueue::AllocMemory(cliplength * 2 * sizeof(short));
|
||||||
|
if (!clipdata)
|
||||||
{
|
{
|
||||||
clippedvert[numclipvert++] = v1;
|
DrawerCommandQueue::WaitForWorkers();
|
||||||
}
|
clipdata = (short*)DrawerCommandQueue::AllocMemory(cliplength * 2 * sizeof(short));
|
||||||
else
|
if (!clipdata)
|
||||||
{
|
return;
|
||||||
auto &v = clippedvert[numclipvert++];
|
|
||||||
v.x = v1.x * (1.0f - t1) + v2.x * t1;
|
|
||||||
v.y = v1.y * (1.0f - t1) + v2.y * t1;
|
|
||||||
v.z = v1.z * (1.0f - t1) + v2.z * t1;
|
|
||||||
v.w = v1.w * (1.0f - t1) + v2.w * t1;
|
|
||||||
for (int i = 0; i < TriVertex::NumVarying; i++)
|
|
||||||
v.varying[i] = v1.varying[i] * (1.0f - t1) + v2.varying[i] * t1;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
if (t2 != 1.0f)
|
for (int i = 0; i < cliplength; i++)
|
||||||
{
|
clipdata[i] = cliptop[clipleft + i];
|
||||||
auto &v = clippedvert[numclipvert++];
|
for (int i = 0; i < cliplength; i++)
|
||||||
v.x = v1.x * (1.0f - t2) + v2.x * t2;
|
clipdata[cliplength + i] = clipbottom[clipleft + i];
|
||||||
v.y = v1.y * (1.0f - t2) + v2.y * t2;
|
|
||||||
v.z = v1.z * (1.0f - t2) + v2.z * t2;
|
|
||||||
v.w = v1.w * (1.0f - t2) + v2.w * t2;
|
|
||||||
for (int i = 0; i < TriVertex::NumVarying; i++)
|
|
||||||
v.varying[i] = v1.varying[i] * (1.0f - t2) + v2.varying[i] * t2;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void R_DrawTriangle()
|
DrawerCommandQueue::QueueCommand<DrawTrianglesCommand>(objectToWorld, vertices, count, clipleft, clipright, clipdata);
|
||||||
{
|
|
||||||
int clipleft = 0;
|
|
||||||
int clipright = viewwidth - 1;
|
|
||||||
short cliptop[MAXWIDTH];
|
|
||||||
short clipbottom[MAXWIDTH];
|
|
||||||
for (int i = clipleft; i < clipright; i++)
|
|
||||||
{
|
|
||||||
cliptop[i] = (i - clipleft) / 4;
|
|
||||||
clipbottom[i] = viewheight - 1 - (i - clipleft) / 4;
|
|
||||||
}
|
|
||||||
|
|
||||||
TriVertex cube[6 * 6] =
|
|
||||||
{
|
|
||||||
{-1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
|
|
||||||
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
{-1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
|
|
||||||
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
{-1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
|
|
||||||
{-1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
|
|
||||||
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
|
|
||||||
{-1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
|
|
||||||
{-1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
|
||||||
{-1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f }
|
|
||||||
};
|
|
||||||
|
|
||||||
for (int i = 0; i < 6; i++)
|
|
||||||
{
|
|
||||||
cube[i * 6 + 0].varying[0] = 1.0f;
|
|
||||||
cube[i * 6 + 1].varying[1] = 1.0f;
|
|
||||||
cube[i * 6 + 2].varying[2] = 1.0f;
|
|
||||||
cube[i * 6 + 3].varying[2] = 1.0f;
|
|
||||||
cube[i * 6 + 4].varying[0] = 1.0f;
|
|
||||||
cube[i * 6 + 4].varying[1] = 1.0f;
|
|
||||||
cube[i * 6 + 4].varying[2] = 1.0f;
|
|
||||||
cube[i * 6 + 5].varying[0] = 1.0f;
|
|
||||||
}
|
|
||||||
|
|
||||||
static float angle = 0.0f;
|
|
||||||
angle = fmod(angle + 0.5f, 360.0f);
|
|
||||||
VSMatrix objectToWorld(0);
|
|
||||||
objectToWorld.translate((float)ViewPos.X, (float)ViewPos.Y + 50.0f, (float)ViewPos.Z);
|
|
||||||
objectToWorld.rotate(angle, 0.57735f, 0.57735f, 0.57735f);
|
|
||||||
objectToWorld.scale(10.0f, 10.0f, 10.0f);
|
|
||||||
|
|
||||||
TriVertex *vinput = cube;
|
|
||||||
for (int i = 0; i < 6 * 6 / 3; i++)
|
|
||||||
{
|
|
||||||
TriVertex vert[3];
|
|
||||||
|
|
||||||
// Vertex shader stuff:
|
|
||||||
for (int j = 0; j < 3; j++)
|
|
||||||
{
|
|
||||||
auto &v = vert[j];
|
|
||||||
v = *(vinput++);
|
|
||||||
|
|
||||||
// Apply object to world transform:
|
|
||||||
const float *matrix = objectToWorld.get();
|
|
||||||
float vx = matrix[0 * 4 + 0] * v.x + matrix[1 * 4 + 0] * v.y + matrix[2 * 4 + 0] * v.z + matrix[3 * 4 + 0] * v.w;
|
|
||||||
float vy = matrix[0 * 4 + 1] * v.x + matrix[1 * 4 + 1] * v.y + matrix[2 * 4 + 1] * v.z + matrix[3 * 4 + 1] * v.w;
|
|
||||||
float vz = matrix[0 * 4 + 2] * v.x + matrix[1 * 4 + 2] * v.y + matrix[2 * 4 + 2] * v.z + matrix[3 * 4 + 2] * v.w;
|
|
||||||
float vw = matrix[0 * 4 + 3] * v.x + matrix[1 * 4 + 3] * v.y + matrix[2 * 4 + 3] * v.z + matrix[3 * 4 + 3] * v.w;
|
|
||||||
v.x = vx;
|
|
||||||
v.y = vy;
|
|
||||||
v.z = vz;
|
|
||||||
v.w = vw;
|
|
||||||
|
|
||||||
// The software renderer world to clip transform:
|
|
||||||
double nearp = 5.0f;
|
|
||||||
double farp = 65536.f;
|
|
||||||
double tr_x = v.x - ViewPos.X;
|
|
||||||
double tr_y = v.y - ViewPos.Y;
|
|
||||||
double tr_z = v.z - ViewPos.Z;
|
|
||||||
double tx = tr_x * ViewSin - tr_y * ViewCos;
|
|
||||||
double tz = tr_x * ViewTanCos + tr_y * ViewTanSin;
|
|
||||||
v.x = (float)tx;
|
|
||||||
v.y = (float)tr_z;
|
|
||||||
v.z = (float)(-tz * (farp + nearp) / (nearp - farp) + (2.0f * farp * nearp) / (nearp - farp));
|
|
||||||
v.w = (float)tz;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Cull, clip and generate additional vertices as needed
|
|
||||||
TriVertex clippedvert[6];
|
|
||||||
int numclipvert = 0;
|
|
||||||
clipedge(vert[0], vert[1], clippedvert, numclipvert);
|
|
||||||
clipedge(vert[1], vert[2], clippedvert, numclipvert);
|
|
||||||
clipedge(vert[2], vert[0], clippedvert, numclipvert);
|
|
||||||
|
|
||||||
// Map to 2D viewport:
|
|
||||||
for (int j = 0; j < numclipvert; j++)
|
|
||||||
{
|
|
||||||
auto &v = clippedvert[j];
|
|
||||||
|
|
||||||
// Calculate normalized device coordinates:
|
|
||||||
v.w = 1.0f / v.w;
|
|
||||||
v.x *= v.w;
|
|
||||||
v.y *= v.w;
|
|
||||||
v.z *= v.w;
|
|
||||||
|
|
||||||
// Apply viewport scale to get screen coordinates:
|
|
||||||
v.x = (float)(CenterX + v.x * CenterX);
|
|
||||||
v.y = (float)(CenterY - v.y * InvZtoScale);
|
|
||||||
}
|
|
||||||
|
|
||||||
for (int i = numclipvert; i > 1; i--)
|
|
||||||
{
|
|
||||||
triangle((uint32_t*)dc_destorg, dc_pitch, clippedvert[numclipvert - 1], clippedvert[i - 1], clippedvert[i - 2], clipleft, clipright, cliptop, clipbottom);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/////////////////////////////////////////////////////////////////////////////
|
/////////////////////////////////////////////////////////////////////////////
|
||||||
|
|
|
||||||
|
|
@ -59,12 +59,14 @@
|
||||||
#include "v_palette.h"
|
#include "v_palette.h"
|
||||||
#include "r_data/colormaps.h"
|
#include "r_data/colormaps.h"
|
||||||
#include "r_draw_rgba.h"
|
#include "r_draw_rgba.h"
|
||||||
|
#include "gl/data/gl_matrix.h"
|
||||||
|
|
||||||
#ifdef _MSC_VER
|
#ifdef _MSC_VER
|
||||||
#pragma warning(disable:4244)
|
#pragma warning(disable:4244)
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
CVAR(Bool, r_capsky, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
|
CVAR(Bool, r_capsky, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
|
||||||
|
CVAR(Bool, r_cubesky, false, 0)
|
||||||
|
|
||||||
//EXTERN_CVAR (Int, tx)
|
//EXTERN_CVAR (Int, tx)
|
||||||
//EXTERN_CVAR (Int, ty)
|
//EXTERN_CVAR (Int, ty)
|
||||||
|
|
@ -1154,9 +1156,104 @@ static void R_DrawCapSky(visplane_t *pl)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static void R_DrawCubeSky(visplane_t *pl)
|
||||||
|
{
|
||||||
|
int x1 = pl->left;
|
||||||
|
int x2 = pl->right;
|
||||||
|
short *uwal = (short *)pl->top;
|
||||||
|
short *dwal = (short *)pl->bottom;
|
||||||
|
|
||||||
|
static TriVertex cube[6 * 6] =
|
||||||
|
{
|
||||||
|
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
|
||||||
|
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
|
||||||
|
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
|
||||||
|
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
|
||||||
|
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
{ 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
|
||||||
|
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
|
||||||
|
{ -1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ -1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f }
|
||||||
|
};
|
||||||
|
|
||||||
|
static bool first_time = true;
|
||||||
|
if (first_time)
|
||||||
|
{
|
||||||
|
for (int i = 0; i < 6; i++)
|
||||||
|
{
|
||||||
|
cube[i * 6 + 0].varying[0] = 1.0f;
|
||||||
|
cube[i * 6 + 1].varying[1] = 1.0f;
|
||||||
|
cube[i * 6 + 2].varying[2] = 1.0f;
|
||||||
|
cube[i * 6 + 3].varying[2] = 1.0f;
|
||||||
|
cube[i * 6 + 4].varying[0] = 1.0f;
|
||||||
|
cube[i * 6 + 4].varying[1] = 1.0f;
|
||||||
|
cube[i * 6 + 4].varying[2] = 1.0f;
|
||||||
|
cube[i * 6 + 5].varying[0] = 1.0f;
|
||||||
|
}
|
||||||
|
first_time = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
//static float angle = 0.0f;
|
||||||
|
//angle = fmod(angle + 0.5f, 360.0f);
|
||||||
|
VSMatrix objectToWorld(0);
|
||||||
|
objectToWorld.translate((float)ViewPos.X, (float)ViewPos.Y, (float)ViewPos.Z);
|
||||||
|
//objectToWorld.rotate(angle, 0.57735f, 0.57735f, 0.57735f);
|
||||||
|
objectToWorld.scale(100.0f, 100.0f, 100.0f);
|
||||||
|
|
||||||
|
R_DrawTriangles(objectToWorld, cube, 6 * 6, x1, x2 - 1, uwal, dwal);
|
||||||
|
}
|
||||||
|
|
||||||
static void R_DrawSky (visplane_t *pl)
|
static void R_DrawSky (visplane_t *pl)
|
||||||
{
|
{
|
||||||
if (r_swtruecolor && r_capsky)
|
if (r_swtruecolor && r_cubesky)
|
||||||
|
{
|
||||||
|
R_DrawCubeSky(pl);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
else if (r_swtruecolor && r_capsky)
|
||||||
{
|
{
|
||||||
R_DrawCapSky(pl);
|
R_DrawCapSky(pl);
|
||||||
return;
|
return;
|
||||||
|
|
|
||||||
|
|
@ -47,13 +47,10 @@
|
||||||
|
|
||||||
EXTERN_CVAR(Bool, r_shadercolormaps)
|
EXTERN_CVAR(Bool, r_shadercolormaps)
|
||||||
|
|
||||||
CVAR(Bool, r_drawtriangle, false, 0)
|
|
||||||
|
|
||||||
void R_SWRSetWindow(int windowSize, int fullWidth, int fullHeight, int stHeight, float trueratio);
|
void R_SWRSetWindow(int windowSize, int fullWidth, int fullHeight, int stHeight, float trueratio);
|
||||||
void R_SetupColormap(player_t *);
|
void R_SetupColormap(player_t *);
|
||||||
void R_SetupFreelook();
|
void R_SetupFreelook();
|
||||||
void R_InitRenderer();
|
void R_InitRenderer();
|
||||||
void R_DrawTriangle();
|
|
||||||
|
|
||||||
FSoftwareRenderer::FSoftwareRenderer()
|
FSoftwareRenderer::FSoftwareRenderer()
|
||||||
{
|
{
|
||||||
|
|
@ -195,8 +192,6 @@ void FSoftwareRenderer::RenderView(player_t *player)
|
||||||
}
|
}
|
||||||
|
|
||||||
R_EndDrawerCommands();
|
R_EndDrawerCommands();
|
||||||
if (r_swtruecolor && r_drawtriangle)
|
|
||||||
R_DrawTriangle();
|
|
||||||
}
|
}
|
||||||
|
|
||||||
//==========================================================================
|
//==========================================================================
|
||||||
|
|
|
||||||
|
|
@ -36,6 +36,9 @@ public:
|
||||||
uint32_t dc_temp_rgbabuff_rgba[MAXHEIGHT * 4];
|
uint32_t dc_temp_rgbabuff_rgba[MAXHEIGHT * 4];
|
||||||
uint32_t *dc_temp_rgba;
|
uint32_t *dc_temp_rgba;
|
||||||
|
|
||||||
|
short triangle_clip_top[MAXWIDTH];
|
||||||
|
short triangle_clip_bottom[MAXWIDTH];
|
||||||
|
|
||||||
// Checks if a line is rendered by this thread
|
// Checks if a line is rendered by this thread
|
||||||
bool line_skipped_by_thread(int line)
|
bool line_skipped_by_thread(int line)
|
||||||
{
|
{
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue