diff options
Diffstat (limited to 'servers/rendering/rasterizer_rd/shaders')
6 files changed, 451 insertions, 99 deletions
diff --git a/servers/rendering/rasterizer_rd/shaders/SCsub b/servers/rendering/rasterizer_rd/shaders/SCsub index 9d531d63ad..4cddf0f685 100644 --- a/servers/rendering/rasterizer_rd/shaders/SCsub +++ b/servers/rendering/rasterizer_rd/shaders/SCsub @@ -5,6 +5,7 @@ Import("env") if "RD_GLSL" in env["BUILDERS"]: env.RD_GLSL("canvas.glsl") env.RD_GLSL("canvas_occlusion.glsl") + env.RD_GLSL("canvas_sdf.glsl") env.RD_GLSL("copy.glsl") env.RD_GLSL("copy_to_fb.glsl") env.RD_GLSL("cubemap_roughness.glsl") diff --git a/servers/rendering/rasterizer_rd/shaders/canvas.glsl b/servers/rendering/rasterizer_rd/shaders/canvas.glsl index b382c0d85f..51d7193a03 100644 --- a/servers/rendering/rasterizer_rd/shaders/canvas.glsl +++ b/servers/rendering/rasterizer_rd/shaders/canvas.glsl @@ -233,6 +233,30 @@ MATERIAL_UNIFORMS } material; #endif +vec2 screen_uv_to_sdf(vec2 p_uv) { + return canvas_data.screen_to_sdf * p_uv; +} + +float texture_sdf(vec2 p_sdf) { + vec2 uv = p_sdf * canvas_data.sdf_to_tex.xy + canvas_data.sdf_to_tex.zw; + float d = texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv).r; + d = d * SDF_MAX_LENGTH - 1.0; + return d * canvas_data.tex_to_sdf; +} + +vec2 texture_sdf_normal(vec2 p_sdf) { + vec2 uv = p_sdf * canvas_data.sdf_to_tex.xy + canvas_data.sdf_to_tex.zw; + + const float EPSILON = 0.001; + return normalize(vec2( + texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv + vec2(EPSILON, 0.0)).r - texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv - vec2(EPSILON, 0.0)).r, + texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv + vec2(0.0, EPSILON)).r - texture(sampler2D(sdf_texture, material_samplers[SAMPLER_LINEAR_CLAMP]), uv - vec2(0.0, EPSILON)).r)); +} + +vec2 sdf_to_screen_uv(vec2 p_sdf) { + return p_sdf * canvas_data.sdf_to_screen; +} + /* clang-format off */ FRAGMENT_SHADER_GLOBALS /* clang-format on */ @@ -249,7 +273,7 @@ vec4 light_compute( inout vec4 shadow_modulate, vec2 screen_uv, vec2 uv, - vec4 color) { + vec4 color, bool is_directional) { vec4 light = vec4(0.0); /* clang-format off */ LIGHT_SHADER_CODE @@ -302,6 +326,99 @@ float map_ninepatch_axis(float pixel, float draw_size, float tex_pixel_size, flo #endif +#ifdef USE_LIGHTING + +vec3 light_normal_compute(vec3 light_vec, vec3 normal, vec3 base_color, vec3 light_color, vec4 specular_shininess, bool specular_shininess_used) { + float cNdotL = max(0.0, dot(normal, light_vec)); + + if (specular_shininess_used) { + //blinn + vec3 view = vec3(0.0, 0.0, 1.0); // not great but good enough + vec3 half_vec = normalize(view + light_vec); + + float cNdotV = max(dot(normal, view), 0.0); + float cNdotH = max(dot(normal, half_vec), 0.0); + float cVdotH = max(dot(view, half_vec), 0.0); + float cLdotH = max(dot(light_vec, half_vec), 0.0); + float shininess = exp2(15.0 * specular_shininess.a + 1.0) * 0.25; + float blinn = pow(cNdotH, shininess); + blinn *= (shininess + 8.0) * (1.0 / (8.0 * M_PI)); + float s = (blinn) / max(4.0 * cNdotV * cNdotL, 0.75); + + return specular_shininess.rgb * light_color * s + light_color * base_color * cNdotL; + } else { + return light_color * base_color * cNdotL; + } +} + +//float distance = length(shadow_pos); +vec4 light_shadow_compute(uint light_base, vec4 light_color, vec4 shadow_uv +#ifdef LIGHT_SHADER_CODE_USED + , + vec3 shadow_modulate +#endif +) { + float shadow; + uint shadow_mode = light_array.data[light_base].flags & LIGHT_FLAGS_FILTER_MASK; + + if (shadow_mode == LIGHT_FLAGS_SHADOW_NEAREST) { + shadow = textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv, 0.0).x; + } else if (shadow_mode == LIGHT_FLAGS_SHADOW_PCF5) { + vec4 shadow_pixel_size = vec4(light_array.data[light_base].shadow_pixel_size, 0.0, 0.0, 0.0); + shadow = 0.0; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 2.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 2.0, 0.0).x; + shadow /= 5.0; + } else { //PCF13 + vec4 shadow_pixel_size = vec4(light_array.data[light_base].shadow_pixel_size, 0.0, 0.0, 0.0); + shadow = 0.0; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 6.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 5.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 4.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 3.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 2.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 2.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 3.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 4.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 5.0, 0.0).x; + shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 6.0, 0.0).x; + shadow /= 13.0; + } + + vec4 shadow_color = unpackUnorm4x8(light_array.data[light_base].shadow_color); +#ifdef LIGHT_SHADER_CODE_USED + shadow_color *= shadow_modulate; +#endif + + shadow_color.a *= light_color.a; //respect light alpha + + return mix(light_color, shadow_color, shadow); +} + +void light_blend_compute(uint light_base, vec4 light_color, inout vec3 color) { + uint blend_mode = light_array.data[light_base].flags & LIGHT_FLAGS_BLEND_MASK; + + switch (blend_mode) { + case LIGHT_FLAGS_BLEND_MODE_ADD: { + color.rgb += light_color.rgb * light_color.a; + } break; + case LIGHT_FLAGS_BLEND_MODE_SUB: { + color.rgb -= light_color.rgb * light_color.a; + } break; + case LIGHT_FLAGS_BLEND_MODE_MIX: { + color.rgb = mix(color.rgb, light_color.rgb, light_color.a); + } break; + } +} + +#endif + void main() { vec4 color = color_interp; vec2 uv = uv_interp; @@ -332,6 +449,7 @@ void main() { color *= texture(sampler2D(color_texture, texture_sampler), uv); uint light_count = (draw_data.flags >> FLAGS_LIGHT_COUNT_SHIFT) & 0xF; //max 16 lights + bool using_light = light_count > 0 || canvas_data.directional_light_count > 0; vec3 normal; @@ -341,7 +459,7 @@ void main() { bool normal_used = false; #endif - if (normal_used || (light_count > 0 && bool(draw_data.flags & FLAGS_DEFAULT_NORMAL_MAP_USED))) { + if (normal_used || (using_light && bool(draw_data.flags & FLAGS_DEFAULT_NORMAL_MAP_USED))) { normal.xy = texture(sampler2D(normal_texture, texture_sampler), uv).xy * vec2(2.0, -2.0) - vec2(1.0, -1.0); normal.z = sqrt(1.0 - dot(normal.xy, normal.xy)); normal_used = true; @@ -358,7 +476,7 @@ void main() { bool specular_shininess_used = false; #endif - if (specular_shininess_used || (light_count > 0 && normal_used && bool(draw_data.flags & FLAGS_DEFAULT_SPECULAR_MAP_USED))) { + if (specular_shininess_used || (using_light && normal_used && bool(draw_data.flags & FLAGS_DEFAULT_SPECULAR_MAP_USED))) { specular_shininess = texture(sampler2D(specular_texture, texture_sampler), uv); specular_shininess *= unpackUnorm4x8(draw_data.specular_shininess); specular_shininess_used = true; @@ -401,13 +519,57 @@ FRAGMENT_SHADER_CODE normal = normalize((canvas_data.canvas_normal_transform * vec4(normal, 0.0)).xyz); } - vec4 base_color = color; + vec3 base_color = color.rgb; if (bool(draw_data.flags & FLAGS_USING_LIGHT_MASK)) { color = vec4(0.0); //invisible by default due to using light mask } +#ifdef MODE_LIGHT_ONLY + color = vec4(0.0); +#else color *= canvas_data.canvas_modulation; -#ifdef USE_LIGHTING +#endif + +#if defined(USE_LIGHTING) && !defined(MODE_UNSHADED) + + // Directional Lights + + for (uint i = 0; i < canvas_data.directional_light_count; i++) { + uint light_base = i; + + vec2 direction = light_array.data[light_base].position; + vec4 light_color = light_array.data[light_base].color; + +#ifdef LIGHT_SHADER_CODE_USED + + vec4 shadow_modulate = vec4(1.0); + light_color = light_compute(light_vertex, direction, normal, light_color, light_color.a, specular_shininess, shadow_modulate, screen_uv, color, uv, true); +#else + + if (normal_used) { + vec3 light_vec = normalize(mix(vec3(direction, 0.0), vec3(0, 0, 1), light_array.data[light_base].height)); + light_color.rgb = light_normal_compute(light_vec, normal, base_color, light_color.rgb, specular_shininess, specular_shininess_used); + } +#endif + + if (bool(light_array.data[light_base].flags & LIGHT_FLAGS_HAS_SHADOW)) { + vec2 shadow_pos = (vec4(shadow_vertex, 0.0, 1.0) * mat4(light_array.data[light_base].shadow_matrix[0], light_array.data[light_base].shadow_matrix[1], vec4(0.0, 0.0, 1.0, 0.0), vec4(0.0, 0.0, 0.0, 1.0))).xy; //multiply inverse given its transposed. Optimizer removes useless operations. + + vec4 shadow_uv = vec4(shadow_pos.x, light_array.data[light_base].shadow_y_ofs, shadow_pos.y * light_array.data[light_base].shadow_zfar_inv, 1.0); + + light_color = light_shadow_compute(light_base, light_color, shadow_uv +#ifdef LIGHT_SHADER_CODE_USED + , + shadow_modulate +#endif + ); + } + + light_blend_compute(light_base, light_color, color.rgb); + } + + // Positional Lights + for (uint i = 0; i < MAX_LIGHTS_PER_ITEM; i++) { if (i >= light_count) { break; @@ -440,7 +602,7 @@ FRAGMENT_SHADER_CODE vec3 light_position = vec3(light_array.data[light_base].position, light_array.data[light_base].height); light_color.rgb *= light_base_color.rgb; - light_color = light_compute(light_vertex, light_position, normal, light_color, light_base_color.a, specular_shininess, shadow_modulate, screen_uv, color, uv); + light_color = light_compute(light_vertex, light_position, normal, light_color, light_base_color.a, specular_shininess, shadow_modulate, screen_uv, color, uv, false); #else light_color.rgb *= light_base_color.rgb * light_base_color.a; @@ -451,24 +613,7 @@ FRAGMENT_SHADER_CODE vec3 light_vec = normalize(light_pos - pos); float cNdotL = max(0.0, dot(normal, light_vec)); - if (specular_shininess_used) { - //blinn - vec3 view = vec3(0.0, 0.0, 1.0); // not great but good enough - vec3 half_vec = normalize(view + light_vec); - - float cNdotV = max(dot(normal, view), 0.0); - float cNdotH = max(dot(normal, half_vec), 0.0); - float cVdotH = max(dot(view, half_vec), 0.0); - float cLdotH = max(dot(light_vec, half_vec), 0.0); - float shininess = exp2(15.0 * specular_shininess.a + 1.0) * 0.25; - float blinn = pow(cNdotH, shininess); - blinn *= (shininess + 8.0) * (1.0 / (8.0 * M_PI)); - float s = (blinn) / max(4.0 * cNdotV * cNdotL, 0.75); - - light_color.rgb = specular_shininess.rgb * light_base_color.rgb * s + light_color.rgb * cNdotL; - } else { - light_color.rgb *= cNdotL; - } + light_color.rgb = light_normal_compute(light_vec, normal, base_color, light_color.rgb, specular_shininess, specular_shininess_used); } #endif if (any(lessThan(tex_uv, vec2(0.0, 0.0))) || any(greaterThanEqual(tex_uv, vec2(1.0, 1.0)))) { @@ -506,69 +651,17 @@ FRAGMENT_SHADER_CODE distance *= light_array.data[light_base].shadow_zfar_inv; //float distance = length(shadow_pos); - float shadow; - uint shadow_mode = light_array.data[light_base].flags & LIGHT_FLAGS_FILTER_MASK; - vec4 shadow_uv = vec4(tex_ofs, light_array.data[light_base].shadow_y_ofs, distance, 1.0); - if (shadow_mode == LIGHT_FLAGS_SHADOW_NEAREST) { - shadow = textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv, 0.0).x; - } else if (shadow_mode == LIGHT_FLAGS_SHADOW_PCF5) { - vec4 shadow_pixel_size = vec4(light_array.data[light_base].shadow_pixel_size, 0.0, 0.0, 0.0); - shadow = 0.0; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 2.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 2.0, 0.0).x; - shadow /= 5.0; - } else { //PCF13 - vec4 shadow_pixel_size = vec4(light_array.data[light_base].shadow_pixel_size, 0.0, 0.0, 0.0); - shadow = 0.0; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 6.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 5.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 4.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 3.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size * 2.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv - shadow_pixel_size, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 2.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 3.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 4.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 5.0, 0.0).x; - shadow += textureProjLod(sampler2DShadow(shadow_atlas_texture, shadow_sampler), shadow_uv + shadow_pixel_size * 6.0, 0.0).x; - shadow /= 13.0; - } - - vec4 shadow_color = unpackUnorm4x8(light_array.data[light_base].shadow_color); + light_color = light_shadow_compute(light_base, light_color, shadow_uv #ifdef LIGHT_SHADER_CODE_USED - shadow_color *= shadow_modulate; + , + shadow_modulate #endif - - shadow_color.a *= light_color.a; //respect light alpha - - light_color = mix(light_color, shadow_color, shadow); - //light_color = mix(light_color, shadow_color, shadow); + ); } - uint blend_mode = light_array.data[light_base].flags & LIGHT_FLAGS_BLEND_MASK; - - switch (blend_mode) { - case LIGHT_FLAGS_BLEND_MODE_ADD: { - color.rgb += light_color.rgb * light_color.a; - } break; - case LIGHT_FLAGS_BLEND_MODE_SUB: { - color.rgb -= light_color.rgb * light_color.a; - } break; - case LIGHT_FLAGS_BLEND_MODE_MIX: { - color.rgb = mix(color.rgb, light_color.rgb, light_color.a); - } break; - case LIGHT_FLAGS_BLEND_MODE_MASK: { - light_color.a *= base_color.a; - color.rgb = mix(color.rgb, light_color.rgb, light_color.a); - } break; - } + light_blend_compute(light_base, light_color, color.rgb); } #endif diff --git a/servers/rendering/rasterizer_rd/shaders/canvas_occlusion.glsl b/servers/rendering/rasterizer_rd/shaders/canvas_occlusion.glsl index 421282cd4d..5c25235c58 100644 --- a/servers/rendering/rasterizer_rd/shaders/canvas_occlusion.glsl +++ b/servers/rendering/rasterizer_rd/shaders/canvas_occlusion.glsl @@ -2,6 +2,8 @@ #version 450 +VERSION_DEFINES + layout(location = 0) in highp vec3 vertex; layout(push_constant, binding = 0, std430) uniform Constants { @@ -13,12 +15,16 @@ layout(push_constant, binding = 0, std430) uniform Constants { } constants; +#ifdef MODE_SHADOW layout(location = 0) out highp float depth; +#endif void main() { highp vec4 vtx = vec4(vertex, 1.0) * mat4(constants.modelview[0], constants.modelview[1], vec4(0.0, 0.0, 1.0, 0.0), vec4(0.0, 0.0, 0.0, 1.0)); - depth = dot(constants.direction, vtx.xy); +#ifdef MODE_SHADOW + depth = dot(constants.direction, vtx.xy); +#endif gl_Position = constants.projection * vtx; } @@ -26,6 +32,8 @@ void main() { #version 450 +VERSION_DEFINES + layout(push_constant, binding = 0, std430) uniform Constants { mat4 projection; mat2x4 modelview; @@ -35,9 +43,17 @@ layout(push_constant, binding = 0, std430) uniform Constants { } constants; +#ifdef MODE_SHADOW layout(location = 0) in highp float depth; layout(location = 0) out highp float distance_buf; +#else +layout(location = 0) out highp float sdf_buf; +#endif void main() { +#ifdef MODE_SHADOW distance_buf = depth / constants.z_far; +#else + sdf_buf = 1.0; +#endif } diff --git a/servers/rendering/rasterizer_rd/shaders/canvas_sdf.glsl b/servers/rendering/rasterizer_rd/shaders/canvas_sdf.glsl new file mode 100644 index 0000000000..302ad03b41 --- /dev/null +++ b/servers/rendering/rasterizer_rd/shaders/canvas_sdf.glsl @@ -0,0 +1,135 @@ +#[compute] + +#version 450 + +VERSION_DEFINES + +layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in; + +layout(r8, set = 0, binding = 1) uniform restrict readonly image2D src_pixels; +layout(r16, set = 0, binding = 2) uniform restrict writeonly image2D dst_sdf; + +layout(rg16i, set = 0, binding = 3) uniform restrict readonly iimage2D src_process; +layout(rg16i, set = 0, binding = 4) uniform restrict writeonly iimage2D dst_process; + +layout(push_constant, binding = 0, std430) uniform Params { + ivec2 size; + int stride; + int shift; + ivec2 base_size; + uvec2 pad; +} +params; + +#define SDF_MAX_LENGTH 16384.0 + +void main() { + ivec2 pos = ivec2(gl_GlobalInvocationID.xy); + if (any(greaterThanEqual(pos, params.size))) { //too large, do nothing + return; + } + +#ifdef MODE_LOAD + + bool solid = imageLoad(src_pixels, pos).r > 0.5; + imageStore(dst_process, pos, solid ? ivec4(pos, 0, 0) : ivec4(ivec2(32767), 0, 0)); +#endif + +#ifdef MODE_LOAD_SHRINK + + int s = 1 << params.shift; + ivec2 base = pos << params.shift; + ivec2 center = base + ivec2(params.shift); + + ivec2 rel = ivec2(32767); + float d = 1e20; + for (int i = 0; i < s; i++) { + for (int j = 0; j < s; j++) { + ivec2 src_pos = base + ivec2(i, j); + if (any(greaterThanEqual(src_pos, params.base_size))) { + continue; + } + bool solid = imageLoad(src_pixels, src_pos).r > 0.5; + if (solid) { + float dist = length(vec2(src_pos - center)); + if (dist < d) { + d = dist; + rel = src_pos; + } + } + } + } + + imageStore(dst_process, pos, ivec4(rel, 0, 0)); +#endif + +#ifdef MODE_PROCESS + + ivec2 base = pos << params.shift; + ivec2 center = base + ivec2(params.shift); + + ivec2 rel = imageLoad(src_process, pos).xy; + + if (center != rel) { + //only process if it does not point to itself + const int ofs_table_size = 8; + const ivec2 ofs_table[ofs_table_size] = ivec2[]( + ivec2(-1, -1), + ivec2(0, -1), + ivec2(+1, -1), + + ivec2(-1, 0), + ivec2(+1, 0), + + ivec2(-1, +1), + ivec2(0, +1), + ivec2(+1, +1)); + + float dist = length(vec2(rel - center)); + for (int i = 0; i < ofs_table_size; i++) { + ivec2 src_pos = pos + ofs_table[i] * params.stride; + if (any(lessThan(src_pos, ivec2(0))) || any(greaterThanEqual(src_pos, params.size))) { + continue; + } + ivec2 src_rel = imageLoad(src_process, src_pos).xy; + float src_dist = length(vec2(src_rel - center)); + if (src_dist < dist) { + dist = src_dist; + rel = src_rel; + } + } + } + + imageStore(dst_process, pos, ivec4(rel, 0, 0)); +#endif + +#ifdef MODE_STORE + + ivec2 rel = imageLoad(src_process, pos).xy; + float d = length(vec2(rel - pos)); + if (d > 0.01) { + d += 1.0; //make it signed + } + d /= SDF_MAX_LENGTH; + d = clamp(d, 0.0, 1.0); + imageStore(dst_sdf, pos, vec4(d)); + +#endif + +#ifdef MODE_STORE_SHRINK + + ivec2 base = pos << params.shift; + ivec2 center = base + ivec2(params.shift); + + ivec2 rel = imageLoad(src_process, pos).xy; + float d = length(vec2(rel - center)); + + if (d > 0.01) { + d += 1.0; //make it signed + } + d /= SDF_MAX_LENGTH; + d = clamp(d, 0.0, 1.0); + imageStore(dst_sdf, pos, vec4(d)); + +#endif +} diff --git a/servers/rendering/rasterizer_rd/shaders/canvas_uniforms_inc.glsl b/servers/rendering/rasterizer_rd/shaders/canvas_uniforms_inc.glsl index 1a226a87d3..cf7678ea31 100644 --- a/servers/rendering/rasterizer_rd/shaders/canvas_uniforms_inc.glsl +++ b/servers/rendering/rasterizer_rd/shaders/canvas_uniforms_inc.glsl @@ -3,6 +3,8 @@ #define M_PI 3.14159265359 +#define SDF_MAX_LENGTH 16384.0 + #define FLAGS_INSTANCING_STRIDE_MASK 0xF #define FLAGS_INSTANCING_ENABLED (1 << 4) #define FLAGS_INSTANCING_HAS_COLORS (1 << 5) @@ -24,6 +26,19 @@ #define FLAGS_DEFAULT_NORMAL_MAP_USED (1 << 26) #define FLAGS_DEFAULT_SPECULAR_MAP_USED (1 << 27) +#define SAMPLER_NEAREST_CLAMP 0 +#define SAMPLER_LINEAR_CLAMP 1 +#define SAMPLER_NEAREST_WITH_MIPMAPS_CLAMP 2 +#define SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP 3 +#define SAMPLER_NEAREST_WITH_MIPMAPS_ANISOTROPIC_CLAMP 4 +#define SAMPLER_LINEAR_WITH_MIPMAPS_ANISOTROPIC_CLAMP 5 +#define SAMPLER_NEAREST_REPEAT 6 +#define SAMPLER_LINEAR_REPEAT 7 +#define SAMPLER_NEAREST_WITH_MIPMAPS_REPEAT 8 +#define SAMPLER_LINEAR_WITH_MIPMAPS_REPEAT 9 +#define SAMPLER_NEAREST_WITH_MIPMAPS_ANISOTROPIC_REPEAT 10 +#define SAMPLER_LINEAR_WITH_MIPMAPS_ANISOTROPIC_REPEAT 11 + // Push Constant layout(push_constant, binding = 0, std430) uniform DrawData { @@ -68,7 +83,14 @@ layout(set = 0, binding = 1, std140) uniform CanvasData { float time; bool use_pixel_snap; - //uint light_count; + vec4 sdf_to_tex; + vec2 screen_to_sdf; + vec2 sdf_to_screen; + + uint directional_light_count; + float tex_to_sdf; + uint pad1; + uint pad2; } canvas_data; @@ -112,10 +134,11 @@ layout(set = 0, binding = 4) uniform texture2D shadow_atlas_texture; layout(set = 0, binding = 5) uniform sampler shadow_sampler; layout(set = 0, binding = 6) uniform texture2D screen_texture; +layout(set = 0, binding = 7) uniform texture2D sdf_texture; -layout(set = 0, binding = 7) uniform sampler material_samplers[12]; +layout(set = 0, binding = 8) uniform sampler material_samplers[12]; -layout(set = 0, binding = 8, std430) restrict readonly buffer GlobalVariableData { +layout(set = 0, binding = 9, std430) restrict readonly buffer GlobalVariableData { vec4 data[]; } global_variables; diff --git a/servers/rendering/rasterizer_rd/shaders/scene_high_end.glsl b/servers/rendering/rasterizer_rd/shaders/scene_high_end.glsl index 455a3d4a3a..285698f060 100644 --- a/servers/rendering/rasterizer_rd/shaders/scene_high_end.glsl +++ b/servers/rendering/rasterizer_rd/shaders/scene_high_end.glsl @@ -361,6 +361,65 @@ layout(location = 0) out vec4 frag_color; #endif // RENDER DEPTH +#ifdef ALPHA_HASH_USED + +float hash_2d(vec2 p) { + return fract(1.0e4 * sin(17.0 * p.x + 0.1 * p.y) * + (0.1 + abs(sin(13.0 * p.y + p.x)))); +} + +float hash_3d(vec3 p) { + return hash_2d(vec2(hash_2d(p.xy), p.z)); +} + +float compute_alpha_hash_threshold(vec3 pos, float hash_scale) { + vec3 dx = dFdx(pos); + vec3 dy = dFdx(pos); + float delta_max_sqr = max(length(dx), length(dy)); + float pix_scale = 1.0 / (hash_scale * delta_max_sqr); + + vec2 pix_scales = + vec2(exp2(floor(log2(pix_scale))), exp2(ceil(log2(pix_scale)))); + + vec2 a_thresh = vec2(hash_3d(floor(pix_scales.x * pos.xyz)), + hash_3d(floor(pix_scales.y * pos.xyz))); + + float lerp_factor = fract(log2(pix_scale)); + + float a_interp = (1.0 - lerp_factor) * a_thresh.x + lerp_factor * a_thresh.y; + + float min_lerp = min(lerp_factor, 1.0 - lerp_factor); + + vec3 cases = vec3(a_interp * a_interp / (2.0 * min_lerp * (1.0 - min_lerp)), + (a_interp - 0.5 * min_lerp) / (1.0 - min_lerp), + 1.0 - ((1.0 - a_interp) * (1.0 - a_interp) / + (2.0 * min_lerp * (1.0 - min_lerp)))); + + float alpha_hash_threshold = + (lerp_factor < (1.0 - min_lerp)) ? ((lerp_factor < min_lerp) ? cases.x : cases.y) : cases.z; + + return clamp(alpha_hash_threshold, 0.0, 1.0); +} + +#endif // ALPHA_HASH_USED + +#ifdef ALPHA_ANTIALIASING_EDGE_USED + +float calc_mip_level(vec2 texture_coord) { + vec2 dx = dFdx(texture_coord); + vec2 dy = dFdy(texture_coord); + float delta_max_sqr = max(dot(dx, dx), dot(dy, dy)); + return max(0.0, 0.5 * log2(delta_max_sqr)); +} + +float compute_alpha_antialiasing_edge(float input_alpha, vec2 texture_coord, float alpha_edge) { + input_alpha *= 1.0 + max(0, calc_mip_level(texture_coord)) * 0.25; // 0.25 mip scale, magic number + input_alpha = (input_alpha - alpha_edge) / max(fwidth(input_alpha), 0.0001) + 0.5; + return clamp(input_alpha, 0.0, 1.0); +} + +#endif // ALPHA_ANTIALIASING_USED + // This returns the G_GGX function divided by 2 cos_theta_m, where in practice cos_theta_m is either N.L or N.V. // We're dividing this factor off because the overall term we'll end up looks like // (see, for example, the first unnumbered equation in B. Burley, "Physically Based Shading at Disney", SIGGRAPH 2012): @@ -809,7 +868,6 @@ void light_process_omni(uint idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 v inout float alpha, #endif inout vec3 diffuse_light, inout vec3 specular_light) { - vec3 light_rel_vec = lights.data[idx].position - vertex; float light_length = length(light_rel_vec); float normalized_distance = light_length * lights.data[idx].inv_radius; @@ -1099,7 +1157,6 @@ void light_process_spot(uint idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 v #endif inout vec3 diffuse_light, inout vec3 specular_light) { - vec3 light_rel_vec = lights.data[idx].position - vertex; float light_length = length(light_rel_vec); float normalized_distance = light_length * lights.data[idx].inv_radius; @@ -1709,10 +1766,6 @@ void main() { float alpha = 1.0; -#if defined(ALPHA_SCISSOR_USED) - float alpha_scissor = 0.5; -#endif - #if defined(TANGENT_USED) || defined(NORMALMAP_USED) || defined(LIGHT_ANISOTROPY_USED) vec3 binormal = normalize(binormal_interp); vec3 tangent = normalize(tangent_interp); @@ -1749,6 +1802,19 @@ void main() { float sss_strength = 0.0; +#ifdef ALPHA_SCISSOR_USED + float alpha_scissor_threshold = 1.0; +#endif // ALPHA_SCISSOR_USED + +#ifdef ALPHA_HASH_USED + float alpha_hash_scale = 1.0; +#endif // ALPHA_HASH_USED + +#ifdef ALPHA_ANTIALIASING_EDGE_USED + float alpha_antialiasing_edge = 0.0; + vec2 alpha_texture_coordinate = vec2(0.0, 0.0); +#endif // ALPHA_ANTIALIASING_EDGE_USED + { /* clang-format off */ @@ -1757,7 +1823,7 @@ FRAGMENT_SHADER_CODE /* clang-format on */ } -#if defined(LIGHT_TRANSMITTANCE_USED) +#ifdef LIGHT_TRANSMITTANCE_USED #ifdef SSS_MODE_SKIN transmittance_color.a = sss_strength; #else @@ -1765,25 +1831,43 @@ FRAGMENT_SHADER_CODE #endif #endif -#if !defined(USE_SHADOW_TO_OPACITY) +#ifndef USE_SHADOW_TO_OPACITY -#if defined(ALPHA_SCISSOR_USED) - if (alpha < alpha_scissor) { +#ifdef ALPHA_SCISSOR_USED + if (alpha < alpha_scissor_threshold) { discard; } #endif // ALPHA_SCISSOR_USED -#ifdef USE_OPAQUE_PREPASS +// alpha hash can be used in unison with alpha antialiasing +#ifdef ALPHA_HASH_USED + if (alpha < compute_alpha_hash_threshold(vertex, alpha_hash_scale)) { + discard; + } +#endif // ALPHA_HASH_USED + +// If we are not edge antialiasing, we need to remove the output alpha channel from scissor and hash +#if (defined(ALPHA_SCISSOR_USED) || defined(ALPHA_HASH_USED)) && !defined(ALPHA_ANTIALIASING_EDGE_USED) + alpha = 1.0; +#endif + +#ifdef ALPHA_ANTIALIASING_EDGE_USED +// If alpha scissor is used, we must further the edge threshold, otherwise we wont get any edge feather +#ifdef ALPHA_SCISSOR_USED + alpha_antialiasing_edge = clamp(alpha_scissor_threshold + alpha_antialiasing_edge, 0.0, 1.0); +#endif + alpha = compute_alpha_antialiasing_edge(alpha, alpha_texture_coordinate, alpha_antialiasing_edge); +#endif // ALPHA_ANTIALIASING_EDGE_USED +#ifdef USE_OPAQUE_PREPASS if (alpha < opaque_prepass_threshold) { discard; } - #endif // USE_OPAQUE_PREPASS #endif // !USE_SHADOW_TO_OPACITY -#if defined(NORMALMAP_USED) +#ifdef NORMALMAP_USED normalmap.xy = normalmap.xy * 2.0 - 1.0; normalmap.z = sqrt(max(0.0, 1.0 - dot(normalmap.xy, normalmap.xy))); //always ignore Z, as it can be RG packed, Z may be pos/neg, etc. @@ -1792,7 +1876,7 @@ FRAGMENT_SHADER_CODE #endif -#if defined(LIGHT_ANISOTROPY_USED) +#ifdef LIGHT_ANISOTROPY_USED if (anisotropy > 0.01) { //rotation matrix |