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- render voxels as triangles instead of quads.

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Quads are not available in the core profile which is required to run GL 3.3 on macOS.
This commit is contained in:
Christoph Oelckers 2020-01-03 18:09:05 +01:00
parent 07754b3255
commit f743b22661
3 changed files with 7 additions and 7 deletions
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12
source/build/src/voxmodel.cpp
View file

@ -1137,7 +1137,7 @@ int32_t polymost_voxdraw(voxmodel_t *m, tspriteptr_t const tspr)
GLInterface.UseDetailMapping(false);
#endif
auto data = GLInterface.AllocVertices(m->qcnt * 4);
auto data = GLInterface.AllocVertices(m->qcnt * 6);
auto vt = data.second;
int qstart = 0;
@ -1149,8 +1149,8 @@ int32_t polymost_voxdraw(voxmodel_t *m, tspriteptr_t const tspr)
f = 1 /*clut[fi++]*/;
if (qdone > 0)
{
GLInterface.Draw(DT_QUADS, qstart, qdone * 4);
qstart += qdone * 4;
GLInterface.Draw(DT_TRIANGLES, qstart, qdone * 6);
qstart += qdone * 6;
qdone = 0;
}
GLInterface.SetColor(pc[0]*f, pc[1]*f, pc[2]*f, pc[3]*f);
@ -1162,8 +1162,10 @@ int32_t polymost_voxdraw(voxmodel_t *m, tspriteptr_t const tspr)
const int32_t yy = vptr[0].y + vptr[2].y;
const int32_t zz = vptr[0].z + vptr[2].z;
for (bssize_t j=0; j<4; j++, vt++)
for (bssize_t jj=0; jj<6; jj++, vt++)
{
static uint8_t trix[] = { 0, 1, 2, 0, 2, 3 };
int j = trix[jj];
#if (VOXBORDWIDTH == 0)
vt->SetTexCoord(((float)vptr[j].u)*ru + uhack[vptr[j].u!=vptr[0].u],
((float)vptr[j].v)*rv + vhack[vptr[j].v!=vptr[0].v]);
@ -1177,7 +1179,7 @@ int32_t polymost_voxdraw(voxmodel_t *m, tspriteptr_t const tspr)
qdone++;
}
GLInterface.Draw(DT_QUADS, qstart, qdone * 4);
GLInterface.Draw(DT_TRIANGLES, qstart, qdone * 6);
GLInterface.SetClamp(prevClamp);
//------------
GLInterface.SetCull(Cull_None);

1
source/glbackend/glbackend.cpp
View file

@ -225,7 +225,6 @@ static GLint primtypes[] =
GL_TRIANGLES,
GL_TRIANGLE_STRIP,
GL_TRIANGLE_FAN,
GL_QUADS,
GL_LINES
};

1
source/glbackend/glbackend.h
View file

@ -128,7 +128,6 @@ enum EDrawType
DT_TRIANGLES,
DT_TRIANGLE_STRIP,
DT_TRIANGLE_FAN,
DT_QUADS,
DT_LINES
};