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Fix texrect texture coordinates calculation for negative dsdx or dtdy.

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Fixed 2D in Rocket robot on wheels, #471
This commit is contained in:
Sergey Lipskiy 2015-11-19 22:57:45 +06:00
parent 84611502c6
commit f7ee508c94
1 changed files with 14 additions and 4 deletions
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18
src/OpenGL.cpp
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@ -1104,10 +1104,20 @@ void OGLRender::drawTexturedRect(const TexturedRectParams & _params)
f32 shiftScaleS = 1.0f;
f32 shiftScaleT = 1.0f;
getTextureShiftScale(t, cache, shiftScaleS, shiftScaleT);
texST[t].s0 = _params.uls * shiftScaleS - gSP.textureTile[t]->fuls;
texST[t].t0 = _params.ult * shiftScaleT - gSP.textureTile[t]->fult;
texST[t].s1 = (_params.lrs + 1.0f) * shiftScaleS - gSP.textureTile[t]->fuls;
texST[t].t1 = (_params.lrt + 1.0f) * shiftScaleT - gSP.textureTile[t]->fult;
if (_params.uls < _params.lrs) {
texST[t].s0 = _params.uls * shiftScaleS - gSP.textureTile[t]->fuls;
texST[t].s1 = (_params.lrs + 1.0f) * shiftScaleS - gSP.textureTile[t]->fuls;
} else {
texST[t].s0 = (_params.uls + 1.0f) * shiftScaleS - gSP.textureTile[t]->fuls;
texST[t].s1 = _params.lrs * shiftScaleS - gSP.textureTile[t]->fuls;
}
if (_params.ult < _params.lrt) {
texST[t].t0 = _params.ult * shiftScaleT - gSP.textureTile[t]->fult;
texST[t].t1 = (_params.lrt + 1.0f) * shiftScaleT - gSP.textureTile[t]->fult;
} else {
texST[t].t0 = (_params.ult + 1.0f) * shiftScaleT - gSP.textureTile[t]->fult;
texST[t].t1 = _params.lrt * shiftScaleT - gSP.textureTile[t]->fult;
}
if (cache.current[t]->frameBufferTexture) {
texST[t].s0 = cache.current[t]->offsetS + texST[t].s0;