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TWINE: added low poly details render methods

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This commit is contained in:
Martin Gerhardy 2021-10-09 20:59:18 +02:00
parent b39e1c260d
commit efc5e0bcf5
2 changed files with 38 additions and 5 deletions
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41
engines/twine/renderer/renderer.cpp
View File

@ -1088,13 +1088,40 @@ void Renderer::renderPolygonsMarble(int vtop, int32 vsize, uint8 color) const {
}
}
void Renderer::renderPolygonsTriche(int vtop, int32 vsize, uint8 color) const {
uint8 *out = (uint8 *)_engine->_frontVideoBuffer.getBasePtr(0, vtop);
const int16 *ptr1 = &_polyTab[vtop];
const int16 *ptr2 = &_colorProgressionBuffer[vtop];
const int screenWidth = _engine->width();
const int screenHeight = _engine->height();
int32 renderLoop = vsize;
if (vtop < 0) {
out += screenWidth * ABS(vtop);
renderLoop -= ABS(vtop);
}
if (renderLoop > screenHeight) {
renderLoop = screenHeight;
}
for (int32 currentLine = 0; currentLine < renderLoop; ++currentLine) {
uint16 xMin = ptr1[0];
const uint16 xMax = ptr1[screenHeight];
uint8 *pDest = out + xMin;
color = (*ptr2++) >> 8;
for (; xMin <= xMax; xMin++) {
*pDest++ = color;
}
out += screenWidth;
}
}
void Renderer::renderPolygons(const CmdRenderPolygon &polygon, Vertex *vertices, int vtop, int vbottom) {
computePolygons(polygon.renderType, vertices, polygon.numVertices);
const int32 vsize = vbottom - vtop + 1;
// TODO: POLYGONTYPE_GOURAUD and POLYGONTYPE_DITHER are replaced with a simpler polygon fill function that
// is not yet reversed.
switch (polygon.renderType) {
case POLYGONTYPE_FLAT:
renderPolygonsFlat(vtop, vsize, polygon.colorIndex);
@ -1122,10 +1149,16 @@ void Renderer::renderPolygons(const CmdRenderPolygon &polygon, Vertex *vertices,
renderPolygonsTrame(vtop, vsize, polygon.colorIndex);
break;
case POLYGONTYPE_GOURAUD:
renderPolygonsGouraud(vtop, vsize);
if (_engine->_cfgfile.PolygonDetails == 0) {
renderPolygonsTriche(vtop, vsize, polygon.colorIndex);
} else {
renderPolygonsGouraud(vtop, vsize);
}
break;
case POLYGONTYPE_DITHER:
if (_engine->_cfgfile.PolygonDetails < 2) {
if (_engine->_cfgfile.PolygonDetails == 0) {
renderPolygonsTriche(vtop, vsize, polygon.colorIndex);
} else if (_engine->_cfgfile.PolygonDetails == 1) {
renderPolygonsGouraud(vtop, vsize);
} else {
renderPolygonsDither(vtop, vsize);

2
engines/twine/renderer/renderer.h
View File

@ -192,7 +192,7 @@ private:
void renderPolygonsGouraud(int vtop, int32 vsize) const;
void renderPolygonsDither(int vtop, int32 vsize) const;
void renderPolygonsMarble(int vtop, int32 vsize, uint8 color) const;
void renderPolygonsTriche(int vtop, int32 vsize, uint8 color) const;
void computePolygons(int16 polyRenderType, const Vertex *vertices, int32 numVertices);
const RenderCommand *depthSortRenderCommands(int32 numOfPrimitives);