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glgsg: fix occasional WeakPointerTo dereference

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This commit is contained in:
rdb 2018-06-14 22:51:35 +02:00
parent 19e1b1d877
commit d48695cb2e
2 changed files with 4 additions and 2 deletions
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5
panda/src/glstuff/glShaderContext_src.cxx
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@ -1910,12 +1910,14 @@ set_state_and_transform(const RenderState *target_rs,
// Reset all of the state.
altered |= Shader::SSD_general;
_state_rs = target_rs;
target_rs->get_attrib_def(_color_attrib);
} else if (state_rs != target_rs) {
// The state has changed since last time.
if (state_rs->get_attrib(ColorAttrib::get_class_slot()) !=
target_rs->get_attrib(ColorAttrib::get_class_slot())) {
altered |= Shader::SSD_color;
target_rs->get_attrib_def(_color_attrib);
}
if (state_rs->get_attrib(ColorScaleAttrib::get_class_slot()) !=
target_rs->get_attrib(ColorScaleAttrib::get_class_slot())) {
@ -2227,8 +2229,7 @@ update_shader_vertex_arrays(ShaderContext *prev, bool force) {
// Get the active ColorAttrib. We'll need it to determine how to apply
// vertex colors.
const ColorAttrib *color_attrib;
_state_rs->get_attrib_def(color_attrib);
const ColorAttrib *color_attrib = _color_attrib.p();
const GeomVertexArrayDataHandle *array_reader;

1
panda/src/glstuff/glShaderContext_src.h
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@ -75,6 +75,7 @@ private:
CPT(TransformState) _modelview_transform;
CPT(TransformState) _camera_transform;
CPT(TransformState) _projection_transform;
CPT(ColorAttrib) _color_attrib;
/*
* struct ParamContext { CPT(InternalName) _name; GLint _location; GLsizei