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do not encode bogus indices

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This commit is contained in:
Konstantin Käfer
2014-02-18 13:27:31 +01:00
parent 6a982b3934
commit 004ff9ea10
1 changed files with 15 additions and 4 deletions
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19
src/renderer/fill_bucket.cpp
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@@ -165,10 +165,21 @@ void FillBucket::tessellate() {
for (int i = 0; i < element_count; ++i) {
const TESSindex *element_group = &elements[i * vertices_per_group];
const TESSindex a = vertex_indices[element_group[0]];
const TESSindex b = vertex_indices[element_group[1]];
const TESSindex c = vertex_indices[element_group[2]];
triangleElementsBuffer->add(index + a, index + b, index + c);
if (element_group[0] != TESS_UNDEF && element_group[1] != TESS_UNDEF && element_group[2] != TESS_UNDEF) {
const TESSindex a = vertex_indices[element_group[0]];
const TESSindex b = vertex_indices[element_group[1]];
const TESSindex c = vertex_indices[element_group[2]];
if (a != TESS_UNDEF && b != TESS_UNDEF && c != TESS_UNDEF) {
triangleElementsBuffer->add(index + a, index + b, index + c);
} else {
// TODO: We're missing a vertex that was not part of the line.
fprintf(stderr, "undefined element buffer\n");
}
} else {
fprintf(stderr, "undefined element buffer\n");
}
}
group.vertex_length += vertex_count;