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Fix cylinder's triangle winding and normals

This commit is contained in:
Josip Miskovic 2022-07-31 09:24:43 +02:00 committed by Bjorn
parent a0173252b9
commit 7c792fd975
1 changed files with 6 additions and 6 deletions
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12
src/modules/graphics/graphics.c
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@ -4421,23 +4421,23 @@ void lovrPassCylinder(Pass* pass, float* transform, bool capped, float angle1, f
uint16_t b = i * 2 + 1;
uint16_t c = i * 2 + 2;
uint16_t d = i * 2 + 3;
uint16_t quad[] = { a, b, c, c, b, d };
uint16_t quad[] = { a, c, b, b, c, d };
memcpy(indices, quad, sizeof(quad));
indices += COUNTOF(quad);
}
if (capped) {
// Cap centers
*vertices++ = (ShapeVertex) { { 0.f, 0.f, -.5f }, { 0.f, 0.f, -.5f }, { .5f, .5f } };
*vertices++ = (ShapeVertex) { { 0.f, 0.f, .5f }, { 0.f, 0.f, .5f }, { .5f, .5f } };
*vertices++ = (ShapeVertex) { { 0.f, 0.f, -.5f }, { 0.f, 0.f, -1.f }, { .5f, .5f } };
*vertices++ = (ShapeVertex) { { 0.f, 0.f, .5f }, { 0.f, 0.f, 1.f }, { .5f, .5f } };
// Caps
for (uint32_t i = 0; i <= segments; i++) {
float theta = angle1 + i * angleShift;
float x = cosf(theta);
float y = sinf(theta);
*vertices++ = (ShapeVertex) { { x, y, -.5f }, { 0.f, 0.f, -.5f }, { x + .5f, y - .5f } };
*vertices++ = (ShapeVertex) { { x, y, .5f }, { 0.f, 0.f, .5f }, { x + .5f, y - .5f } };
*vertices++ = (ShapeVertex) { { x, y, -.5f }, { 0.f, 0.f, -1.f }, { x + .5f, y - .5f } };
*vertices++ = (ShapeVertex) { { x, y, .5f }, { 0.f, 0.f, 1.f }, { x + .5f, y - .5f } };
}
// Cap wedges
@ -4446,7 +4446,7 @@ void lovrPassCylinder(Pass* pass, float* transform, bool capped, float angle1, f
uint16_t a = base + 0;
uint16_t b = base + (i + 1) * 2;
uint16_t c = base + (i + 2) * 2;
uint16_t wedge1[] = { a + 0, b + 0, c + 0 };
uint16_t wedge1[] = { a + 0, c + 0, b + 0 };
uint16_t wedge2[] = { a + 1, b + 1, c + 1 };
memcpy(indices + 0, wedge1, sizeof(wedge1));
memcpy(indices + 3, wedge2, sizeof(wedge2));