125 lines
4.2 KiB
GLSL
125 lines
4.2 KiB
GLSL
#[compute]
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#version 450
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#VERSION_DEFINES
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layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in;
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layout(set = 0, binding = 0) uniform sampler2D source_ssil;
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layout(rgba16, set = 1, binding = 0) uniform restrict writeonly image2D dest_image;
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layout(r8, set = 2, binding = 0) uniform restrict readonly image2D source_edges;
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layout(push_constant, binding = 1, std430) uniform Params {
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float edge_sharpness;
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float pad;
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vec2 half_screen_pixel_size;
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}
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params;
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vec4 unpack_edges(float p_packed_val) {
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uint packed_val = uint(p_packed_val * 255.5);
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vec4 edgesLRTB;
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edgesLRTB.x = float((packed_val >> 6) & 0x03) / 3.0;
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edgesLRTB.y = float((packed_val >> 4) & 0x03) / 3.0;
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edgesLRTB.z = float((packed_val >> 2) & 0x03) / 3.0;
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edgesLRTB.w = float((packed_val >> 0) & 0x03) / 3.0;
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return clamp(edgesLRTB + params.edge_sharpness, 0.0, 1.0);
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}
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void add_sample(vec4 p_ssil_value, float p_edge_value, inout vec4 r_sum, inout float r_sum_weight) {
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float weight = p_edge_value;
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r_sum += (weight * p_ssil_value);
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r_sum_weight += weight;
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}
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#ifdef MODE_WIDE
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vec4 sample_blurred_wide(ivec2 p_pos, vec2 p_coord) {
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vec4 ssil_value = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, 0));
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vec4 ssil_valueL = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(-2, 0));
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vec4 ssil_valueT = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, -2));
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vec4 ssil_valueR = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(2, 0));
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vec4 ssil_valueB = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, 2));
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vec4 edgesLRTB = unpack_edges(imageLoad(source_edges, p_pos).r);
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edgesLRTB.x *= unpack_edges(imageLoad(source_edges, p_pos + ivec2(-2, 0)).r).y;
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edgesLRTB.z *= unpack_edges(imageLoad(source_edges, p_pos + ivec2(0, -2)).r).w;
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edgesLRTB.y *= unpack_edges(imageLoad(source_edges, p_pos + ivec2(2, 0)).r).x;
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edgesLRTB.w *= unpack_edges(imageLoad(source_edges, p_pos + ivec2(0, 2)).r).z;
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float sum_weight = 0.8;
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vec4 sum = ssil_value * sum_weight;
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add_sample(ssil_valueL, edgesLRTB.x, sum, sum_weight);
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add_sample(ssil_valueR, edgesLRTB.y, sum, sum_weight);
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add_sample(ssil_valueT, edgesLRTB.z, sum, sum_weight);
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add_sample(ssil_valueB, edgesLRTB.w, sum, sum_weight);
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vec4 ssil_avg = sum / sum_weight;
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ssil_value = ssil_avg;
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return ssil_value;
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}
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#endif
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#ifdef MODE_SMART
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vec4 sample_blurred(ivec2 p_pos, vec2 p_coord) {
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vec4 vC = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, 0));
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vec4 vL = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(-1, 0));
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vec4 vT = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, -1));
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vec4 vR = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(1, 0));
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vec4 vB = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, 1));
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float packed_edges = imageLoad(source_edges, p_pos).r;
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vec4 edgesLRTB = unpack_edges(packed_edges);
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float sum_weight = 0.5;
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vec4 sum = vC * sum_weight;
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add_sample(vL, edgesLRTB.x, sum, sum_weight);
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add_sample(vR, edgesLRTB.y, sum, sum_weight);
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add_sample(vT, edgesLRTB.z, sum, sum_weight);
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add_sample(vB, edgesLRTB.w, sum, sum_weight);
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vec4 ssil_avg = sum / sum_weight;
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vec4 ssil_value = ssil_avg;
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return ssil_value;
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}
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#endif
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void main() {
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// Pixel being shaded
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ivec2 ssC = ivec2(gl_GlobalInvocationID.xy);
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#ifdef MODE_NON_SMART
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vec2 half_pixel = params.half_screen_pixel_size * 0.5;
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vec2 uv = (vec2(gl_GlobalInvocationID.xy) + vec2(0.5, 0.5)) * params.half_screen_pixel_size;
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vec4 centre = textureLod(source_ssil, uv, 0.0);
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vec4 value = textureLod(source_ssil, vec2(uv + vec2(-half_pixel.x * 3, -half_pixel.y)), 0.0) * 0.2;
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value += textureLod(source_ssil, vec2(uv + vec2(+half_pixel.x, -half_pixel.y * 3)), 0.0) * 0.2;
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value += textureLod(source_ssil, vec2(uv + vec2(-half_pixel.x, +half_pixel.y * 3)), 0.0) * 0.2;
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value += textureLod(source_ssil, vec2(uv + vec2(+half_pixel.x * 3, +half_pixel.y)), 0.0) * 0.2;
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vec4 sampled = value + centre * 0.2;
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#else
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#ifdef MODE_SMART
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vec4 sampled = sample_blurred(ssC, (vec2(gl_GlobalInvocationID.xy) + vec2(0.5, 0.5)) * params.half_screen_pixel_size);
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#else // MODE_WIDE
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vec4 sampled = sample_blurred_wide(ssC, (vec2(gl_GlobalInvocationID.xy) + vec2(0.5, 0.5)) * params.half_screen_pixel_size);
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#endif
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#endif // MODE_NON_SMART
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imageStore(dest_image, ssC, sampled);
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}
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