libretro/scummvm
1
0
Fork 0
mirror of https://github.com/libretro/scummvm.git synced 2025-02-05 10:26:40 +00:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

TWINE: added clipping to model rendering

Browse Source 
this fixes the rendering issue with drowing
This commit is contained in:
Martin Gerhardy 2021-10-10 17:40:25 +02:00
parent cae51f4222
commit 46723348fc
1 changed files with 30 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
engines/twine/renderer/renderer.cpp
View File

@ -393,6 +393,36 @@ bool Renderer::computePolygons(int16 polyRenderType, const Vertex *vertices, int
const int16 *colProgressBufEnd = &_colorProgressionBuffer[_polyTabSize - 1];
const int screenHeight = _engine->height();
const Common::Rect &clip = _engine->_interface->_clip;
if (!clip.isEmpty()) {
int32 vleft;
int32 vright;
int32 vtop;
int32 vbottom;
vleft = vtop = SCENE_SIZE_MAX;
vright = vbottom = SCENE_SIZE_MIN;
for (int32 i = 0; i < numVertices; i++) {
if (vertices[i].x < vleft)
vleft = vertices[i].x;
if (vertices[i].x > vright)
vright = vertices[i].x;
if (vertices[i].y < vtop)
vtop = vertices[i].y;
if (vertices[i].y > vbottom)
vbottom = vertices[i].y;
}
// no vertices
if (vtop > vbottom) {
return false;
}
if (vright < clip.left - 1 || vleft > clip.right + 1 || vbottom < clip.top - 1 || vtop > clip.bottom + 1) {
debug(10, "Clipped %i:%i:%i:%i, clip rect(%i:%i:%i:%i)", vleft, vtop, vright, vbottom, clip.left, clip.top, clip.right, clip.bottom);
return false;
}
}
for (int32 nVertex = 0; nVertex < numVertices; nVertex++) {
const int16 oldVertexY = currentVertexY;
const int16 oldVertexX = currentVertexX;