diff options
Diffstat (limited to 'servers/visual/rasterizer/shaders/canvas_occlusion_fix.glsl')
| -rw-r--r-- | servers/visual/rasterizer/shaders/canvas_occlusion_fix.glsl | 53 |
1 files changed, 48 insertions, 5 deletions
diff --git a/servers/visual/rasterizer/shaders/canvas_occlusion_fix.glsl b/servers/visual/rasterizer/shaders/canvas_occlusion_fix.glsl index 48757bb68a..7c9651201e 100644 --- a/servers/visual/rasterizer/shaders/canvas_occlusion_fix.glsl +++ b/servers/visual/rasterizer/shaders/canvas_occlusion_fix.glsl @@ -35,22 +35,65 @@ layout(set=0, binding=0) uniform sampler2D textures[4]; layout(location = 0) in highp float u; layout(location = 0) out highp float distance; +layout(push_constant, binding = 0, std430) uniform Constants { + mat4 projection; + float far; + float pad[3]; +} constants; + void main() { //0-1 in the texture we are writing to represents a circle, 0-2PI) //obtain the quarter circle from the source textures - highp float sub_angle = ((mod(u,0.25)/0.25)*2.0-1.0)*(PI/4.0); - highp float x=tan(sub_angle)*0.5+0.5; + float angle=fract(u+1.0-0.125); float depth; - if (u<0.25) { +#if 0 + if (angle<0.25) { + highp float sub_angle = ((angle/0.25)*2.0-1.0)*(PI/4.0); + highp float x=tan(sub_angle)*0.5+0.5; depth=texture(textures[0],vec2(x,0.0)).x; - } else if (u<0.50) { + } else if (angle<0.50) { + highp float sub_angle = (((angle-0.25)/0.25)*2.0-1.0)*(PI/4.0); + highp float x=tan(sub_angle)*0.5+0.5; depth=texture(textures[1],vec2(x,0.0)).x; - } else if (u<0.75) { + } else if (angle<0.75) { + highp float sub_angle = (((angle-0.5)/0.25)*2.0-1.0)*(PI/4.0); + highp float x=tan(sub_angle)*0.5+0.5; depth=texture(textures[2],vec2(x,0.0)).x; } else { + highp float sub_angle = (((angle-0.75)/0.25)*2.0-1.0)*(PI/4.0); + highp float x=tan(sub_angle)*0.5+0.5; depth=texture(textures[3],vec2(x,0.0)).x; } +#else + if (angle<0.25) { + highp float sub_angle = ((angle/0.25)*2.0-1.0)*(PI/4.0); + vec2 pos = vec2(cos(sub_angle),sin(sub_angle))*constants.far; + vec4 proj = constants.projection * vec4(pos,0.0,1.0); + float coord = (proj.x/proj.w)*0.5+0.5; + depth=texture(textures[0],vec2(coord,0.0)).x; + } else if (angle<0.50) { + highp float sub_angle = (((angle-0.25)/0.25)*2.0-1.0)*(PI/4.0); + vec2 pos = vec2(cos(sub_angle),sin(sub_angle))*constants.far; + vec4 proj = constants.projection * vec4(pos,0.0,1.0); + float coord = (proj.x/proj.w)*0.5+0.5; + depth=texture(textures[1],vec2(coord,0.0)).x; + } else if (angle<0.75) { + highp float sub_angle = (((angle-0.5)/0.25)*2.0-1.0)*(PI/4.0); + vec2 pos = vec2(cos(sub_angle),sin(sub_angle))*constants.far; + vec4 proj = constants.projection * vec4(pos,0.0,1.0); + float coord = (proj.x/proj.w)*0.5+0.5; + depth=texture(textures[2],vec2(coord,0.0)).x; + } else { + highp float sub_angle = (((angle-0.75)/0.25)*2.0-1.0)*(PI/4.0); + vec2 pos = vec2(cos(sub_angle),sin(sub_angle))*constants.far; + vec4 proj = constants.projection * vec4(pos,0.0,1.0); + float coord = (proj.x/proj.w)*0.5+0.5; + depth=texture(textures[3],vec2(coord,0.0)).x; + } + + +#endif distance=depth; } |