diff options
Diffstat (limited to 'source/blender/gpu/shaders/common/gpu_shader_common_mix_rgb.glsl')
| -rw-r--r-- | source/blender/gpu/shaders/common/gpu_shader_common_mix_rgb.glsl | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/common/gpu_shader_common_mix_rgb.glsl b/source/blender/gpu/shaders/common/gpu_shader_common_mix_rgb.glsl new file mode 100644 index 00000000000..f9652f1150b --- /dev/null +++ b/source/blender/gpu/shaders/common/gpu_shader_common_mix_rgb.glsl @@ -0,0 +1,293 @@ +#pragma BLENDER_REQUIRE(gpu_shader_common_color_utils.glsl) + +void mix_blend(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + outcol = mix(col1, col2, fac); + outcol.a = col1.a; +} + +void mix_add(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + outcol = mix(col1, col1 + col2, fac); + outcol.a = col1.a; +} + +void mix_mult(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + outcol = mix(col1, col1 * col2, fac); + outcol.a = col1.a; +} + +void mix_screen(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + float facm = 1.0 - fac; + + outcol = vec4(1.0) - (vec4(facm) + fac * (vec4(1.0) - col2)) * (vec4(1.0) - col1); + outcol.a = col1.a; +} + +void mix_overlay(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + float facm = 1.0 - fac; + + outcol = col1; + + if (outcol.r < 0.5) { + outcol.r *= facm + 2.0 * fac * col2.r; + } + else { + outcol.r = 1.0 - (facm + 2.0 * fac * (1.0 - col2.r)) * (1.0 - outcol.r); + } + + if (outcol.g < 0.5) { + outcol.g *= facm + 2.0 * fac * col2.g; + } + else { + outcol.g = 1.0 - (facm + 2.0 * fac * (1.0 - col2.g)) * (1.0 - outcol.g); + } + + if (outcol.b < 0.5) { + outcol.b *= facm + 2.0 * fac * col2.b; + } + else { + outcol.b = 1.0 - (facm + 2.0 * fac * (1.0 - col2.b)) * (1.0 - outcol.b); + } +} + +void mix_sub(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + outcol = mix(col1, col1 - col2, fac); + outcol.a = col1.a; +} + +void mix_div(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + float facm = 1.0 - fac; + + outcol = col1; + + if (col2.r != 0.0) { + outcol.r = facm * outcol.r + fac * outcol.r / col2.r; + } + if (col2.g != 0.0) { + outcol.g = facm * outcol.g + fac * outcol.g / col2.g; + } + if (col2.b != 0.0) { + outcol.b = facm * outcol.b + fac * outcol.b / col2.b; + } +} + +void mix_diff(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + outcol = mix(col1, abs(col1 - col2), fac); + outcol.a = col1.a; +} + +void mix_dark(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + outcol.rgb = mix(col1.rgb, min(col1.rgb, col2.rgb), fac); + outcol.a = col1.a; +} + +void mix_light(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + outcol.rgb = mix(col1.rgb, max(col1.rgb, col2.rgb), fac); + outcol.a = col1.a; +} + +void mix_dodge(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + outcol = col1; + + if (outcol.r != 0.0) { + float tmp = 1.0 - fac * col2.r; + if (tmp <= 0.0) { + outcol.r = 1.0; + } + else if ((tmp = outcol.r / tmp) > 1.0) { + outcol.r = 1.0; + } + else { + outcol.r = tmp; + } + } + if (outcol.g != 0.0) { + float tmp = 1.0 - fac * col2.g; + if (tmp <= 0.0) { + outcol.g = 1.0; + } + else if ((tmp = outcol.g / tmp) > 1.0) { + outcol.g = 1.0; + } + else { + outcol.g = tmp; + } + } + if (outcol.b != 0.0) { + float tmp = 1.0 - fac * col2.b; + if (tmp <= 0.0) { + outcol.b = 1.0; + } + else if ((tmp = outcol.b / tmp) > 1.0) { + outcol.b = 1.0; + } + else { + outcol.b = tmp; + } + } +} + +void mix_burn(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + float tmp, facm = 1.0 - fac; + + outcol = col1; + + tmp = facm + fac * col2.r; + if (tmp <= 0.0) { + outcol.r = 0.0; + } + else if ((tmp = (1.0 - (1.0 - outcol.r) / tmp)) < 0.0) { + outcol.r = 0.0; + } + else if (tmp > 1.0) { + outcol.r = 1.0; + } + else { + outcol.r = tmp; + } + + tmp = facm + fac * col2.g; + if (tmp <= 0.0) { + outcol.g = 0.0; + } + else if ((tmp = (1.0 - (1.0 - outcol.g) / tmp)) < 0.0) { + outcol.g = 0.0; + } + else if (tmp > 1.0) { + outcol.g = 1.0; + } + else { + outcol.g = tmp; + } + + tmp = facm + fac * col2.b; + if (tmp <= 0.0) { + outcol.b = 0.0; + } + else if ((tmp = (1.0 - (1.0 - outcol.b) / tmp)) < 0.0) { + outcol.b = 0.0; + } + else if (tmp > 1.0) { + outcol.b = 1.0; + } + else { + outcol.b = tmp; + } +} + +void mix_hue(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + float facm = 1.0 - fac; + + outcol = col1; + + vec4 hsv, hsv2, tmp; + rgb_to_hsv(col2, hsv2); + + if (hsv2.y != 0.0) { + rgb_to_hsv(outcol, hsv); + hsv.x = hsv2.x; + hsv_to_rgb(hsv, tmp); + + outcol = mix(outcol, tmp, fac); + outcol.a = col1.a; + } +} + +void mix_sat(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + float facm = 1.0 - fac; + + outcol = col1; + + vec4 hsv, hsv2; + rgb_to_hsv(outcol, hsv); + + if (hsv.y != 0.0) { + rgb_to_hsv(col2, hsv2); + + hsv.y = facm * hsv.y + fac * hsv2.y; + hsv_to_rgb(hsv, outcol); + } +} + +void mix_val(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + float facm = 1.0 - fac; + + vec4 hsv, hsv2; + rgb_to_hsv(col1, hsv); + rgb_to_hsv(col2, hsv2); + + hsv.z = facm * hsv.z + fac * hsv2.z; + hsv_to_rgb(hsv, outcol); +} + +void mix_color(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + float facm = 1.0 - fac; + + outcol = col1; + + vec4 hsv, hsv2, tmp; + rgb_to_hsv(col2, hsv2); + + if (hsv2.y != 0.0) { + rgb_to_hsv(outcol, hsv); + hsv.x = hsv2.x; + hsv.y = hsv2.y; + hsv_to_rgb(hsv, tmp); + + outcol = mix(outcol, tmp, fac); + outcol.a = col1.a; + } +} + +void mix_soft(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + float facm = 1.0 - fac; + + vec4 one = vec4(1.0); + vec4 scr = one - (one - col2) * (one - col1); + outcol = facm * col1 + fac * ((one - col1) * col2 * col1 + col1 * scr); +} + +void mix_linear(float fac, vec4 col1, vec4 col2, out vec4 outcol) +{ + fac = clamp(fac, 0.0, 1.0); + + outcol = col1 + fac * (2.0 * (col2 - vec4(0.5))); +} + +void clamp_color(vec3 vec, vec3 min, vec3 max, out vec3 out_vec) +{ + out_vec = clamp(vec, min, max); +} |