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glgsg: hack fix for p3d_TextureMatrix[] error on macOS (#846)

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rdb 2020-01-22 15:43:26 +01:00
parent b573cc3587
commit 0300ac8d3b
1 changed files with 10 additions and 0 deletions
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10
panda/src/glstuff/glShaderContext_src.cxx
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@ -890,7 +890,17 @@ reflect_uniform(int i, char *name_buffer, GLsizei name_buflen) {
// Add it once for each index.
for (bind._index = 0; bind._index < param_size; ++bind._index) {
// It was discovered in #846, that GLSL 4.10 and lower don't seem to
// guarantee that matrices occupy successive locations, and on macOS
// they indeed occupy four locations per element.
// As a big fat hack, we multiply by four on macOS, because this is
// hard to fix on the 1.10 branch. We'll have a proper fix on the
// master branch.
#ifdef __APPLE__
bind._id._seqno = p + bind._index * 4;
#else
bind._id._seqno = p + bind._index;
#endif
_shader->_mat_spec.push_back(bind);
}
_shader->_mat_deps |= bind._dep[0];