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https://git.coom.tech/drummyfish/small3dlib.git
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Add rasterization tests
This commit is contained in:
Miloslav Číž
parent
55ebaef41c
commit
0917cd39b7
1 changed files with 150 additions and 1 deletions
151
test.c
151
test.c
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@ -2,8 +2,156 @@
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#define S3L_PIXEL_FUNCTION pixelFunc
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#include "s3l.h"
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void pixelFunc(S3L_PixelInfo *pixel)
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#define TEST_BUFFER_W 16
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#define TEST_BUFFER_H 16
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uint8_t testRaster[TEST_BUFFER_W * TEST_BUFFER_H];
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void pixelFunc(S3L_PixelInfo *p)
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{
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testRaster[p->y * TEST_BUFFER_W + p->x] = 1;
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}
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uint16_t testTriangleRasterization(
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S3L_ScreenCoord x0,
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S3L_ScreenCoord y0,
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S3L_ScreenCoord x1,
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S3L_ScreenCoord y1,
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S3L_ScreenCoord x2,
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S3L_ScreenCoord y2,
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uint8_t *expectedPixels
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)
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{
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printf(" --- testing tringle rasterization (|: expected, -: rasterized) ----\n");
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S3L_DrawConfig conf;
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conf.backfaceCulling = S3L_BACKFACE_CULLING_NONE;
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conf.mode = S3L_MODE_TRIANGLES;
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memset(testRaster,0,TEST_BUFFER_W * TEST_BUFFER_H);
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S3L_drawTriangle(x0,y0,x1,y1,x2,y2,conf,0);
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printf(" 0123456789ABCDEF\n");
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uint16_t numErrors = 0;
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for (uint8_t y = 0; y < TEST_BUFFER_H; ++y)
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{
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printf(" %d",y);
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if (y < 10)
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printf(" ");
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for (uint8_t x = 0; x < TEST_BUFFER_W; ++x)
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{
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uint8_t expected = expectedPixels[y * TEST_BUFFER_W + x];
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uint8_t rasterized = testRaster[y * TEST_BUFFER_W + x];
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char c =
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expected ?
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(rasterized ? '+' : '|')
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:
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(rasterized ? '-' : ' ');
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if (c == '-' || c == '|')
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numErrors++;
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printf("%c",c);
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}
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printf("\n");
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}
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printf(" errors: %d\n\n",numErrors);
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return numErrors;
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}
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uint16_t testRasterization()
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{
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printf("\n=== TESTING RASTERIZATION ===\n");
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uint16_t numErrors = 0;
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uint8_t pixels1[TEST_BUFFER_W * TEST_BUFFER_H] =
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{
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// 0 1 2 3 4 5 6 7 8 9 A B C D E F
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 1
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0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0, // 2
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0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0, // 3
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0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0, // 4
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0,0,1,1,1,1,1,1,0,0,0,0,0,0,0,0, // 5
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0,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0, // 6
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 7
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 8
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 9
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // A
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // B
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // C
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // D
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // E
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 // F
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};
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numErrors += testTriangleRasterization(4,1, 1,6, 9,7, pixels1);
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uint8_t pixels2[TEST_BUFFER_W * TEST_BUFFER_H] =
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{
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// 0 1 2 3 4 5 6 7 8 9 A B C D E F
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0
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0,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0, // 2
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0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0, // 3
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0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0, // 4
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0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0, // 5
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 6
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 7
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 8
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 9
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // A
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // B
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // C
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // D
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // E
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 // F
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};
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numErrors += testTriangleRasterization(7,1, 1,2, 4,6, pixels2);
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uint8_t pixels3[TEST_BUFFER_W * TEST_BUFFER_H] =
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{
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// 0 1 2 3 4 5 6 7 8 9 A B C D E F
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0
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0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0
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0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0, // 2
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0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0, // 3
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0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0, // 4
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0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0, // 5
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 6
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 7
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 8
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 9
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // A
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // B
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // C
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // D
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // E
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 // F
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};
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numErrors += testTriangleRasterization(2,1, 6,9, 1,3, pixels3);
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uint8_t pixelsEmpty[TEST_BUFFER_W * TEST_BUFFER_H];
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memset(pixelsEmpty,0,TEST_BUFFER_W * TEST_BUFFER_H);
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numErrors += testTriangleRasterization(5,3, 3,3, 9,3, pixelsEmpty);
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numErrors += testTriangleRasterization(9,4, 9,0, 9,9, pixelsEmpty);
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numErrors += testTriangleRasterization(3,3, 6,6, 7,7, pixelsEmpty);
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printf("total rasterization errors: %d\n",numErrors);
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}
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int main()
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@ -27,6 +175,7 @@ int main()
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S3L_mat4Xmat4(&m,&m2);
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S3L_writeMat4(m);
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testRasterization();
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return 0;
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}
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