diff options
Diffstat (limited to 'source/blender/gpu/shaders/gpu_shader_point_uniform_color_outline_aa_frag.glsl')
-rw-r--r-- | source/blender/gpu/shaders/gpu_shader_point_uniform_color_outline_aa_frag.glsl | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_point_uniform_color_outline_aa_frag.glsl b/source/blender/gpu/shaders/gpu_shader_point_uniform_color_outline_aa_frag.glsl new file mode 100644 index 00000000000..eae5ee633ae --- /dev/null +++ b/source/blender/gpu/shaders/gpu_shader_point_uniform_color_outline_aa_frag.glsl @@ -0,0 +1,36 @@ + +uniform vec4 color; +uniform vec4 outlineColor; + +in vec4 radii; +out vec4 fragColor; + +void main() { + float dist = length(gl_PointCoord - vec2(0.5)); + +// transparent outside of point +// --- 0 --- +// smooth transition +// --- 1 --- +// pure outline color +// --- 2 --- +// smooth transition +// --- 3 --- +// pure point color +// ... +// dist = 0 at center of point + + float midStroke = 0.5 * (radii[1] + radii[2]); + + if (dist > midStroke) { + fragColor.rgb = outlineColor.rgb; + fragColor.a = mix(outlineColor.a, 0.0, smoothstep(radii[1], radii[0], dist)); + } + else { + fragColor = mix(color, outlineColor, smoothstep(radii[3], radii[2], dist)); + } + + if (fragColor.a == 0.0) { + discard; + } +} |