OrdinaryMagician/vkdoom_m
OrdinaryMagician/vkdoom_m
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Crash fixes

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This commit is contained in:
Magnus Norddahl 2016-11-10 05:30:33 +01:00
commit b94096ffe1
5 changed files with 24 additions and 17 deletions
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8
src/r_poly_triangle.cpp
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@ -127,7 +127,7 @@ TriVertex PolyTriangleDrawer::shade_vertex(const TriUniforms &uniforms, TriVerte
void PolyTriangleDrawer::draw_shaded_triangle(const TriVertex *vert, bool ccw, ScreenPolyTriangleDrawerArgs *args, DrawerThread *thread, void(*drawfunc)(const ScreenPolyTriangleDrawerArgs *, DrawerThread *))
{
// Cull, clip and generate additional vertices as needed
TriVertex clippedvert[12];
TriVertex clippedvert[max_additional_vertices];
int numclipvert;
clipedge(vert, clippedvert, numclipvert);
@ -196,7 +196,7 @@ void PolyTriangleDrawer::clipedge(const TriVertex *verts, TriVertex *clippedvert
// -v.w <= v.z <= v.w
// use barycentric weights while clipping vertices
float weights[12 * 3 * 2];
float weights[max_additional_vertices * 3 * 2];
for (int i = 0; i < 3; i++)
{
weights[i * 3 + 0] = 0.0f;
@ -220,7 +220,7 @@ void PolyTriangleDrawer::clipedge(const TriVertex *verts, TriVertex *clippedvert
// Clip against each halfspace
float *input = weights;
float *output = weights + 12 * 3;
float *output = weights + max_additional_vertices * 3;
int inputverts = 3;
int outputverts = 0;
for (int p = 0; p < 6; p++)
@ -241,7 +241,7 @@ void PolyTriangleDrawer::clipedge(const TriVertex *verts, TriVertex *clippedvert
clipdistance[2 * 6 + p] * input[j * 3 + 2];
float t1, t2;
if (!cullhalfspace(clipdistance1, clipdistance2, t1, t2))
if (!cullhalfspace(clipdistance1, clipdistance2, t1, t2) && outputverts + 1 < max_additional_vertices)
{
// add t1 vertex
for (int k = 0; k < 3; k++)