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Filled polygons have texture coordinates computed from their bounds.

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Fixes #1951.
This commit is contained in:
Sasha Szpakowski
2024-02-25 20:09:06 -04:00
parent bb7312e057
commit ed6a50178c
3 changed files with 49 additions and 18 deletions
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src/modules/graphics/Polyline.cpp
+19 -9
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@@ -424,7 +424,7 @@ void Polyline::draw(love::graphics::Graphics *gfx)
Graphics::BatchedDrawCommand cmd;
cmd.formats[0] = getSinglePositionFormat(is2D);
cmd.formats[1] = CommonFormat::RGBAub;
cmd.formats[1] = CommonFormat::STf_RGBAub;
cmd.indexMode = triangle_mode;
cmd.vertexCount = std::min(maxvertices, total_vertex_count - vertex_start);
@@ -435,13 +435,19 @@ void Polyline::draw(love::graphics::Graphics *gfx)
else
t.transformXY0((Vector3 *) data.stream[0], verts, cmd.vertexCount);
Color32 *colordata = (Color32 *) data.stream[1];
STf_RGBAub *attributes = (STf_RGBAub *) data.stream[1];
int draw_rough_count = std::min(cmd.vertexCount, (int) vertex_count - vertex_start);
// Constant vertex color up to the overdraw vertices.
// Texture coordinates are a constant value, we only have them to keep auto-batching
// when drawing filled and line polygons together.
for (int i = 0; i < draw_rough_count; i++)
colordata[i] = curcolor;
{
attributes[i].s = 0.0f;
attributes[i].t = 0.0f;
attributes[i].color = curcolor;
}
if (overdraw)
{
@@ -456,30 +462,34 @@ void Polyline::draw(love::graphics::Graphics *gfx)
if (draw_overdraw_count > 0)
{
Color32 *colors = colordata + draw_overdraw_begin;
fill_color_array(curcolor, colors, draw_overdraw_count);
STf_RGBAub *c = attributes + draw_overdraw_begin;
fill_color_array(curcolor, c, draw_overdraw_count);
}
}
}
}
void Polyline::fill_color_array(Color32 constant_color, Color32 *colors, int count)
void Polyline::fill_color_array(Color32 constant_color, STf_RGBAub *attributes, int count)
{
for (int i = 0; i < count; ++i)
{
Color32 c = constant_color;
c.a *= (i+1) % 2; // avoids branching. equiv to if (i%2 == 1) c.a = 0;
colors[i] = c;
attributes[i].s = 0.0f;
attributes[i].t = 0.0f;
attributes[i].color = c;
}
}
void NoneJoinPolyline::fill_color_array(Color32 constant_color, Color32 *colors, int count)
void NoneJoinPolyline::fill_color_array(Color32 constant_color, STf_RGBAub *attributes, int count)
{
for (int i = 0; i < count; ++i)
{
Color32 c = constant_color;
c.a *= (i & 3) < 2; // if (i % 4 == 2 || i % 4 == 3) c.a = 0
colors[i] = c;
attributes[i].s = 0.0f;
attributes[i].t = 0.0f;
attributes[i].color = c;
}
}