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Implement CanvasItem line antialiasing in GLES2

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This is a straight copy-paste of the code from
`drivers/gles3/rasterizer_canvas_gles3.cpp`. It is subject to the
same restrictions as the GLES3 implementation: it only works
on desktop platforms as they use OpenGL instead of OpenGL ES.
This commit is contained in:
Hugo Locurcio 2019-07-12 16:48:02 +02:00
parent 584ca0f156
commit 707ce08cdd
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GPG key ID: 39E8F8BE30B0A49C
1 changed files with 49 additions and 0 deletions
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49
drivers/gles2/rasterizer_canvas_gles2.cpp
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@ -498,7 +498,16 @@ void RasterizerCanvasGLES2::_canvas_item_render_commands(Item *p_item, Item *cur
Vector2(line->to.x, line->to.y)
};
#ifdef GLES_OVER_GL
if (line->antialiased)
glEnable(GL_LINE_SMOOTH);
#endif
_draw_gui_primitive(2, verts, NULL, NULL);
#ifdef GLES_OVER_GL
if (line->antialiased)
glDisable(GL_LINE_SMOOTH);
#endif
} else {
Vector2 t = (line->from - line->to).normalized().tangent() * line->width * 0.5;
@ -510,6 +519,19 @@ void RasterizerCanvasGLES2::_canvas_item_render_commands(Item *p_item, Item *cur
};
_draw_gui_primitive(4, verts, NULL, NULL);
#ifdef GLES_OVER_GL
if (line->antialiased) {
glEnable(GL_LINE_SMOOTH);
for (int j = 0; j < 4; j++) {
Vector2 vertsl[2] = {
verts[j],
verts[(j + 1) % 4],
};
_draw_gui_primitive(2, vertsl, NULL, NULL);
}
glDisable(GL_LINE_SMOOTH);
}
#endif
}
} break;
@ -919,6 +941,13 @@ void RasterizerCanvasGLES2::_canvas_item_render_commands(Item *p_item, Item *cur
}
_draw_polygon(polygon->indices.ptr(), polygon->count, polygon->points.size(), polygon->points.ptr(), polygon->uvs.ptr(), polygon->colors.ptr(), polygon->colors.size() == 1, polygon->weights.ptr(), polygon->bones.ptr());
#ifdef GLES_OVER_GL
if (polygon->antialiased) {
glEnable(GL_LINE_SMOOTH);
_draw_generic(GL_LINE_LOOP, polygon->points.size(), polygon->points.ptr(), polygon->uvs.ptr(), polygon->colors.ptr(), polygon->colors.size() == 1);
glDisable(GL_LINE_SMOOTH);
}
#endif
} break;
case Item::Command::TYPE_MESH: {
@ -1120,7 +1149,22 @@ void RasterizerCanvasGLES2::_canvas_item_render_commands(Item *p_item, Item *cur
if (pline->triangles.size()) {
_draw_generic(GL_TRIANGLE_STRIP, pline->triangles.size(), pline->triangles.ptr(), NULL, pline->triangle_colors.ptr(), pline->triangle_colors.size() == 1);
#ifdef GLES_OVER_GL
glEnable(GL_LINE_SMOOTH);
if (pline->multiline) {
//needs to be different
} else {
_draw_generic(GL_LINE_LOOP, pline->lines.size(), pline->lines.ptr(), NULL, pline->line_colors.ptr(), pline->line_colors.size() == 1);
}
glDisable(GL_LINE_SMOOTH);
#endif
} else {
#ifdef GLES_OVER_GL
if (pline->antialiased)
glEnable(GL_LINE_SMOOTH);
#endif
if (pline->multiline) {
int todo = pline->lines.size() / 2;
int max_per_call = data.polygon_buffer_size / (sizeof(real_t) * 4);
@ -1135,6 +1179,11 @@ void RasterizerCanvasGLES2::_canvas_item_render_commands(Item *p_item, Item *cur
} else {
_draw_generic(GL_LINES, pline->lines.size(), pline->lines.ptr(), NULL, pline->line_colors.ptr(), pline->line_colors.size() == 1);
}
#ifdef GLES_OVER_GL
if (pline->antialiased)
glDisable(GL_LINE_SMOOTH);
#endif
}
} break;