diff options
Diffstat (limited to 'source/blender/gpu/shaders/material/gpu_shader_material_color_util.glsl')
-rw-r--r-- | source/blender/gpu/shaders/material/gpu_shader_material_color_util.glsl | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_color_util.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_color_util.glsl deleted file mode 100644 index fe89985ae7f..00000000000 --- a/source/blender/gpu/shaders/material/gpu_shader_material_color_util.glsl +++ /dev/null @@ -1,161 +0,0 @@ -void rgb_to_hsv(vec4 rgb, out vec4 outcol) -{ - float cmax, cmin, h, s, v, cdelta; - vec3 c; - - cmax = max(rgb[0], max(rgb[1], rgb[2])); - cmin = min(rgb[0], min(rgb[1], rgb[2])); - cdelta = cmax - cmin; - - v = cmax; - if (cmax != 0.0) { - s = cdelta / cmax; - } - else { - s = 0.0; - h = 0.0; - } - - if (s == 0.0) { - h = 0.0; - } - else { - c = (vec3(cmax) - rgb.xyz) / cdelta; - - if (rgb.x == cmax) { - h = c[2] - c[1]; - } - else if (rgb.y == cmax) { - h = 2.0 + c[0] - c[2]; - } - else { - h = 4.0 + c[1] - c[0]; - } - - h /= 6.0; - - if (h < 0.0) { - h += 1.0; - } - } - - outcol = vec4(h, s, v, rgb.w); -} - -void hsv_to_rgb(vec4 hsv, out vec4 outcol) -{ - float i, f, p, q, t, h, s, v; - vec3 rgb; - - h = hsv[0]; - s = hsv[1]; - v = hsv[2]; - - if (s == 0.0) { - rgb = vec3(v, v, v); - } - else { - if (h == 1.0) { - h = 0.0; - } - - h *= 6.0; - i = floor(h); - f = h - i; - rgb = vec3(f, f, f); - p = v * (1.0 - s); - q = v * (1.0 - (s * f)); - t = v * (1.0 - (s * (1.0 - f))); - - if (i == 0.0) { - rgb = vec3(v, t, p); - } - else if (i == 1.0) { - rgb = vec3(q, v, p); - } - else if (i == 2.0) { - rgb = vec3(p, v, t); - } - else if (i == 3.0) { - rgb = vec3(p, q, v); - } - else if (i == 4.0) { - rgb = vec3(t, p, v); - } - else { - rgb = vec3(v, p, q); - } - } - - outcol = vec4(rgb, hsv.w); -} - -void rgb_to_hsl(vec4 rgb, out vec4 outcol) -{ - float cmax, cmin, h, s, l; - - cmax = max(rgb[0], max(rgb[1], rgb[2])); - cmin = min(rgb[0], min(rgb[1], rgb[2])); - l = min(1.0, (cmax + cmin) / 2.0); - - if (cmax == cmin) { - h = s = 0.0; /* achromatic */ - } - else { - float cdelta = cmax - cmin; - s = l > 0.5 ? cdelta / (2.0 - cmax - cmin) : cdelta / (cmax + cmin); - if (cmax == rgb[0]) { - h = (rgb[1] - rgb[2]) / cdelta + (rgb[1] < rgb[2] ? 6.0 : 0.0); - } - else if (cmax == rgb[1]) { - h = (rgb[2] - rgb[0]) / cdelta + 2.0; - } - else { - h = (rgb[0] - rgb[1]) / cdelta + 4.0; - } - } - h /= 6.0; - - outcol = vec4(h, s, l, rgb.w); -} - -void hsl_to_rgb(vec4 hsl, out vec4 outcol) -{ - float nr, ng, nb, chroma, h, s, l; - - h = hsl[0]; - s = hsl[1]; - l = hsl[2]; - - nr = abs(h * 6.0 - 3.0) - 1.0; - ng = 2.0 - abs(h * 6.0 - 2.0); - nb = 2.0 - abs(h * 6.0 - 4.0); - - nr = clamp(nr, 0.0, 1.0); - nb = clamp(nb, 0.0, 1.0); - ng = clamp(ng, 0.0, 1.0); - - chroma = (1.0 - abs(2.0 * l - 1.0)) * s; - - outcol = vec4((nr - 0.5) * chroma + l, (ng - 0.5) * chroma + l, (nb - 0.5) * chroma + l, hsl.w); -} - -void color_alpha_clear(vec4 color, out vec4 result) -{ - result = vec4(color.rgb, 1.0); -} - -void color_alpha_premultiply(vec4 color, out vec4 result) -{ - result = vec4(color.rgb * color.a, 1.0); -} - -void color_alpha_unpremultiply(vec4 color, out vec4 result) -{ - if (color.a == 0.0 || color.a == 1.0) { - result = vec4(color.rgb, 1.0); - } - else { - result = vec4(color.rgb / color.a, 1.0); - } -} |