Page MenuHome
Differential D9451 Diff 31329 source/blender/draw/engines/overlay/shaders/background_frag.glsl

Changeset View

Standalone View

View Options

source/blender/draw/engines/overlay/shaders/background_frag.glsl

uniform sampler2D colorBuffer; uniform sampler2D colorBuffer;
uniform sampler2D depthBuffer; uniform sampler2D depthBuffer;
uniform int bgType; uniform int bgType;
uniform vec4 colorOverride; uniform vec4 colorOverride;
in vec4 uvcoordsvar; in vec4 uvcoordsvar;
out vec4 fragColor; out vec4 fragColor;
#define BG_SOLID 0 #define BG_SOLID 0
#define BG_GRADIENT 1 #define BG_GRADIENT 1
#define BG_CHECKER 2 #define BG_CHECKER 2
#define BG_RADIAL 3 #define BG_RADIAL 3
#define BG_SOLID_CHECKER 4 #define BG_SOLID_CHECKER 4
#define BG_MASK 5
#define SQRT2 1.4142135623730950488 #define SQRT2 1.4142135623730950488
/* 4x4 bayer matrix prepared for 8bit UNORM precision error. */ /* 4x4 bayer matrix prepared for 8bit UNORM precision error. */
#define P(x) (((x + 0.5) * (1.0 / 16.0) - 0.5) * (1.0 / 255.0)) #define P(x) (((x + 0.5) * (1.0 / 16.0) - 0.5) * (1.0 / 255.0))
const vec4 dither_mat4x4[4] = vec4[4](vec4(P(0.0), P(8.0), P(2.0), P(10.0)), const vec4 dither_mat4x4[4] = vec4[4](vec4(P(0.0), P(8.0), P(2.0), P(10.0)),
vec4(P(12.0), P(4.0), P(14.0), P(6.0)), vec4(P(12.0), P(4.0), P(14.0), P(6.0)),
vec4(P(3.0), P(11.0), P(1.0), P(9.0)), vec4(P(3.0), P(11.0), P(1.0), P(9.0)),
vec4(P(15.0), P(7.0), P(13.0), P(5.0))); vec4(P(15.0), P(7.0), P(13.0), P(5.0)));
float dither(void) float dither(void)
{ {
ivec2 co = ivec2(gl_FragCoord.xy) % 4; ivec2 co = ivec2(gl_FragCoord.xy) % 4;
return dither_mat4x4[co.x][co.y]; return dither_mat4x4[co.x][co.y];
} }
void main() void main()
{ {
/* The blend equation is: /* The blend equation is:
* resutl.rgb = SRC.rgb * (1 - DST.a) + DST.rgb * (SRC.a) * resutl.rgb = SRC.rgb * (1 - DST.a) + DST.rgb * (SRC.a)
fclemUnsubmitted
Done
Inline Actions

You could put this inside the switch statement like this

case BG_MASK:
  fragColor = vec4(vec3(1.0 - alpha), 0.0);
  return;
fclem: You could put this inside the switch statement like this ``` case BG_MASK: fragColor…
* result.a = SRC.a * 0 + DST.a * SRC.a * result.a = SRC.a * 0 + DST.a * SRC.a
* This removes the alpha channel and put the background behind reference images * This removes the alpha channel and put the background behind reference images
* while masking the reference images by the render alpha. * while masking the reference images by the render alpha.
*/ */
float alpha = texture(colorBuffer, uvcoordsvar.st).a; float alpha = texture(colorBuffer, uvcoordsvar.st).a;
float depth = texture(depthBuffer, uvcoordsvar.st).r; float depth = texture(depthBuffer, uvcoordsvar.st).r;
vec3 bg_col; vec3 bg_col;
Show All 32 Lines case BG_RADIAL:
bg_col += dither(); bg_col += dither();
break; break;
case BG_CHECKER: case BG_CHECKER:
float size = sizeChecker * sizePixel; float size = sizeChecker * sizePixel;
ivec2 p = ivec2(floor(gl_FragCoord.xy / size)); ivec2 p = ivec2(floor(gl_FragCoord.xy / size));
bool check = mod(p.x, 2) == mod(p.y, 2); bool check = mod(p.x, 2) == mod(p.y, 2);
bg_col = (check) ? colorCheckerPrimary.rgb : colorCheckerSecondary.rgb; bg_col = (check) ? colorCheckerPrimary.rgb : colorCheckerSecondary.rgb;
break; break;
case BG_MASK:
fragColor = vec4(vec3(1.0 - alpha), 0.0);
return;
} }
bg_col = mix(bg_col, colorOverride.rgb, colorOverride.a); bg_col = mix(bg_col, colorOverride.rgb, colorOverride.a);
/* Mimic alpha under behavior. Result is premultiplied. */ /* Mimic alpha under behavior. Result is premultiplied. */
fragColor = vec4(bg_col, 1.0) * (1.0 - alpha); fragColor = vec4(bg_col, 1.0) * (1.0 - alpha);
/* Special case: If the render is not transparent, do not clear alpha values. */ /* Special case: If the render is not transparent, do not clear alpha values. */
if (depth == 1.0 && alpha == 1.0) { if (depth == 1.0 && alpha == 1.0) {
fragColor.a = 1.0; fragColor.a = 1.0;
} }
} }