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fixes for small point rendering

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This commit is contained in:
David Rose 2007-01-17 19:48:26 +00:00
parent 9ac35805f9
commit 6257151e81
2 changed files with 8 additions and 7 deletions
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12
panda/src/text/dynamicTextGlyph.cxx
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@ -116,11 +116,13 @@ make_geom(int bitmap_top, int bitmap_left, float advance, float poly_margin,
float bottom = origin_y - tex_y_size / tex_pixels_per_unit - tex_poly_margin; float bottom = origin_y - tex_y_size / tex_pixels_per_unit - tex_poly_margin;
float right = origin_x + tex_x_size / tex_pixels_per_unit + tex_poly_margin; float right = origin_x + tex_x_size / tex_pixels_per_unit + tex_poly_margin;
// And the corresponding corners in UV units. // And the corresponding corners in UV units. We add 0.5f to center
float uv_top = 1.0f - (float)(_y - poly_margin) / _page->get_y_size(); // the UV in the middle of its texel, to minimize roundoff errors
float uv_left = (float)(_x - poly_margin) / _page->get_x_size(); // when we are close to 1-to-1 pixel size.
float uv_bottom = 1.0f - (float)(_y + poly_margin + tex_y_size) / _page->get_y_size(); float uv_top = 1.0f - ((float)(_y - poly_margin) + 0.5f) / _page->get_y_size();
float uv_right = (float)(_x + poly_margin + tex_x_size) / _page->get_x_size(); float uv_left = ((float)(_x - poly_margin) + 0.5f) / _page->get_x_size();
float uv_bottom = 1.0f - ((float)(_y + poly_margin + tex_y_size) + 0.5f) / _page->get_y_size();
float uv_right = ((float)(_x + poly_margin + tex_x_size) + 0.5f) / _page->get_x_size();
// Create a corresponding triangle pair. We use a pair of indexed // Create a corresponding triangle pair. We use a pair of indexed
// triangles rther than a single triangle strip, to avoid the bad // triangles rther than a single triangle strip, to avoid the bad
// vertex duplication behavior with lots of two-triangle strips. // vertex duplication behavior with lots of two-triangle strips.

3
panda/src/text/textNode.cxx
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@ -237,8 +237,7 @@ output(ostream &out) const {
//////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////
void TextNode:: void TextNode::
write(ostream &out, int indent_level) const { write(ostream &out, int indent_level) const {
indent(out, indent_level) PandaNode::write(out, indent_level);
<< "TextNode " << get_name() << "\n";
TextProperties::write(out, indent_level + 2); TextProperties::write(out, indent_level + 2);
indent(out, indent_level + 2) indent(out, indent_level + 2)
<< "transform is: " << *TransformState::make_mat(_transform) << "\n"; << "transform is: " << *TransformState::make_mat(_transform) << "\n";