diff options
Diffstat (limited to 'servers/rendering/renderer_rd/shaders')
20 files changed, 893 insertions, 123 deletions
diff --git a/servers/rendering/renderer_rd/shaders/copy.glsl b/servers/rendering/renderer_rd/shaders/copy.glsl index 6b2671a42b..d4d0ed0f56 100644 --- a/servers/rendering/renderer_rd/shaders/copy.glsl +++ b/servers/rendering/renderer_rd/shaders/copy.glsl @@ -84,6 +84,8 @@ void main() { color += texelFetch(source_color, base_pos + ivec2(1, 0), 0); color += texelFetch(source_color, base_pos + ivec2(1, 1), 0); color /= 4.0; + color = mix(color, vec4(100.0, 100.0, 100.0, 1.0), isinf(color)); + color = mix(color, vec4(100.0, 100.0, 100.0, 1.0), isnan(color)); imageStore(dest_buffer, pos + params.target, color); #endif @@ -132,6 +134,13 @@ void main() { local_cache[dest_index + 16] = textureLod(source_color, quad_center_uv + vec2(0.0, 1.0 / params.section.w), 0); local_cache[dest_index + 16 + 1] = textureLod(source_color, quad_center_uv + vec2(1.0 / params.section.zw), 0); } + if (bool(params.flags & FLAG_GLOW_FIRST_PASS)) { + // Tonemap initial samples to reduce weight of fireflies: https://graphicrants.blogspot.com/2013/12/tone-mapping.html + local_cache[dest_index] /= 1.0 + dot(local_cache[dest_index].rgb, vec3(0.299, 0.587, 0.114)); + local_cache[dest_index + 1] /= 1.0 + dot(local_cache[dest_index + 1].rgb, vec3(0.299, 0.587, 0.114)); + local_cache[dest_index + 16] /= 1.0 + dot(local_cache[dest_index + 16].rgb, vec3(0.299, 0.587, 0.114)); + local_cache[dest_index + 16 + 1] /= 1.0 + dot(local_cache[dest_index + 16 + 1].rgb, vec3(0.299, 0.587, 0.114)); + } memoryBarrierShared(); barrier(); @@ -177,6 +186,11 @@ void main() { color += temp_cache[index - 2] * 0.140367; color += temp_cache[index - 3] * 0.106595; + if (bool(params.flags & FLAG_GLOW_FIRST_PASS)) { + // Undo tonemap to restore range: https://graphicrants.blogspot.com/2013/12/tone-mapping.html + color /= 1.0 - dot(color.rgb, vec3(0.299, 0.587, 0.114)); + } + color *= params.glow_strength; if (bool(params.flags & FLAG_GLOW_FIRST_PASS)) { @@ -186,7 +200,7 @@ void main() { #endif color *= params.glow_exposure; - float luminance = max(color.r, max(color.g, color.b)); + float luminance = dot(color.rgb, vec3(0.299, 0.587, 0.114)); float feedback = max(smoothstep(params.glow_hdr_threshold, params.glow_hdr_threshold + params.glow_hdr_scale, luminance), params.glow_bloom); color = min(color * feedback, vec4(params.glow_luminance_cap)); diff --git a/servers/rendering/renderer_rd/shaders/fsr_upscale.glsl b/servers/rendering/renderer_rd/shaders/fsr_upscale.glsl index 4e2ba84033..54a7790f77 100644 --- a/servers/rendering/renderer_rd/shaders/fsr_upscale.glsl +++ b/servers/rendering/renderer_rd/shaders/fsr_upscale.glsl @@ -5,8 +5,8 @@ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ -/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ -/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ diff --git a/servers/rendering/renderer_rd/shaders/gi.glsl b/servers/rendering/renderer_rd/shaders/gi.glsl index 5528ea3659..9854f124d7 100644 --- a/servers/rendering/renderer_rd/shaders/gi.glsl +++ b/servers/rendering/renderer_rd/shaders/gi.glsl @@ -68,19 +68,15 @@ sdfgi; #define MAX_VOXEL_GI_INSTANCES 8 struct VoxelGIData { - mat4 xform; - vec3 bounds; - float dynamic_range; + mat4 xform; // 64 - 64 - float bias; - float normal_bias; - bool blend_ambient; - uint texture_slot; + vec3 bounds; // 12 - 76 + float dynamic_range; // 4 - 80 - uint pad0; - uint pad1; - uint pad2; - uint mipmaps; + float bias; // 4 - 84 + float normal_bias; // 4 - 88 + bool blend_ambient; // 4 - 92 + uint mipmaps; // 4 - 96 }; layout(set = 0, binding = 16, std140) uniform VoxelGIs { diff --git a/servers/rendering/renderer_rd/shaders/giprobe_write.glsl b/servers/rendering/renderer_rd/shaders/giprobe_write.glsl index 25d87ca45d..a6d65bffeb 100644 --- a/servers/rendering/renderer_rd/shaders/giprobe_write.glsl +++ b/servers/rendering/renderer_rd/shaders/giprobe_write.glsl @@ -7,7 +7,6 @@ layout(local_size_x = 64, local_size_y = 1, local_size_z = 1) in; #define NO_CHILDREN 0xFFFFFFFF -#define GREY_VEC vec3(0.33333, 0.33333, 0.33333) struct CellChildren { uint children[8]; diff --git a/servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl b/servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl index e4628b2d5a..608b76b108 100644 --- a/servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl +++ b/servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl @@ -251,7 +251,9 @@ void main() { vertex = (world_matrix * vec4(vertex, 1.0)).xyz; +#ifdef NORMAL_USED normal = world_normal_matrix * normal; +#endif #if defined(TANGENT_USED) || defined(NORMAL_MAP_USED) || defined(LIGHT_ANISOTROPY_USED) @@ -290,12 +292,13 @@ void main() { #if !defined(SKIP_TRANSFORM_USED) && defined(VERTEX_WORLD_COORDS_USED) vertex = (scene_data.inv_camera_matrix * vec4(vertex, 1.0)).xyz; - normal = mat3(scene_data.inverse_normal_matrix) * normal; +#ifdef NORMAL_USED + normal = (scene_data.inv_camera_matrix * vec4(normal, 0.0)).xyz; +#endif #if defined(TANGENT_USED) || defined(NORMAL_MAP_USED) || defined(LIGHT_ANISOTROPY_USED) - - binormal = mat3(scene_data.camera_inverse_binormal_matrix) * binormal; - tangent = mat3(scene_data.camera_inverse_tangent_matrix) * tangent; + binormal = (scene_data.inv_camera_matrix * vec4(binormal, 0.0)).xyz; + tangent = (scene_data.inv_camera_matrix * vec4(tangent, 0.0)).xyz; #endif #endif @@ -1153,7 +1156,7 @@ void main() { } #endif // !USE_LIGHTMAP - if (scene_data.ssao_enabled) { + if (bool(scene_data.ss_effects_flags & SCREEN_SPACE_EFFECTS_FLAGS_USE_SSAO)) { float ssao = texture(sampler2D(ao_buffer, material_samplers[SAMPLER_LINEAR_CLAMP]), screen_uv).r; ao = min(ao, ssao); ao_light_affect = mix(ao_light_affect, max(ao_light_affect, scene_data.ssao_light_affect), scene_data.ssao_ao_affect); @@ -1223,6 +1226,12 @@ void main() { // convert ao to direct light ao ao = mix(1.0, ao, ao_light_affect); + if (bool(scene_data.ss_effects_flags & SCREEN_SPACE_EFFECTS_FLAGS_USE_SSIL)) { + vec4 ssil = textureLod(sampler2D(ssil_buffer, material_samplers[SAMPLER_LINEAR_CLAMP]), screen_uv, 0.0); + ambient_light *= 1.0 - ssil.a; + ambient_light += ssil.rgb * albedo.rgb; + } + //this saves some VGPRs vec3 f0 = F0(metallic, specular, albedo); diff --git a/servers/rendering/renderer_rd/shaders/scene_forward_clustered_inc.glsl b/servers/rendering/renderer_rd/shaders/scene_forward_clustered_inc.glsl index be29cf4f58..0f7cd18534 100644 --- a/servers/rendering/renderer_rd/shaders/scene_forward_clustered_inc.glsl +++ b/servers/rendering/renderer_rd/shaders/scene_forward_clustered_inc.glsl @@ -72,6 +72,9 @@ layout(set = 0, binding = 4) uniform sampler light_projector_sampler; //3 bits of stride #define INSTANCE_FLAGS_PARTICLE_TRAIL_MASK 0xFF +#define SCREEN_SPACE_EFFECTS_FLAGS_USE_SSAO 1 +#define SCREEN_SPACE_EFFECTS_FLAGS_USE_SSIL 2 + layout(set = 0, binding = 5, std430) restrict readonly buffer OmniLights { LightData data[]; } @@ -201,7 +204,7 @@ layout(set = 1, binding = 0, std140) uniform SceneData { float z_far; float z_near; - bool ssao_enabled; + uint ss_effects_flags; float ssao_light_affect; float ssao_ao_affect; bool roughness_limiter_enabled; @@ -305,19 +308,15 @@ layout(set = 1, binding = 15) uniform texture2DArray sdfgi_lightprobe_texture; layout(set = 1, binding = 16) uniform texture3D sdfgi_occlusion_cascades; struct VoxelGIData { - mat4 xform; - vec3 bounds; - float dynamic_range; + mat4 xform; // 64 - 64 - float bias; - float normal_bias; - bool blend_ambient; - uint texture_slot; + vec3 bounds; // 12 - 76 + float dynamic_range; // 4 - 80 - float anisotropy_strength; - float ambient_occlusion; - float ambient_occlusion_size; - uint mipmaps; + float bias; // 4 - 84 + float normal_bias; // 4 - 88 + bool blend_ambient; // 4 - 92 + uint mipmaps; // 4 - 96 }; layout(set = 1, binding = 17, std140) uniform VoxelGIs { @@ -327,6 +326,8 @@ voxel_gi_instances; layout(set = 1, binding = 18) uniform texture3D volumetric_fog_texture; +layout(set = 1, binding = 19) uniform texture2D ssil_buffer; + #endif /* Set 2 Skeleton & Instancing (can change per item) */ diff --git a/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl b/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl index e92fbecfd0..9e3732fd2b 100644 --- a/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl +++ b/servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl @@ -261,7 +261,9 @@ void main() { vertex = (world_matrix * vec4(vertex, 1.0)).xyz; +#ifdef NORMAL_USED normal = world_normal_matrix * normal; +#endif #if defined(TANGENT_USED) || defined(NORMAL_MAP_USED) || defined(LIGHT_ANISOTROPY_USED) @@ -302,12 +304,13 @@ void main() { #if !defined(SKIP_TRANSFORM_USED) && defined(VERTEX_WORLD_COORDS_USED) vertex = (scene_data.inv_camera_matrix * vec4(vertex, 1.0)).xyz; - normal = mat3(scene_data.inverse_normal_matrix) * normal; +#ifdef NORMAL_USED + normal = (scene_data.inv_camera_matrix * vec4(normal, 0.0)).xyz; +#endif #if defined(TANGENT_USED) || defined(NORMAL_MAP_USED) || defined(LIGHT_ANISOTROPY_USED) - - binormal = mat3(scene_data.camera_inverse_binormal_matrix) * binormal; - tangent = mat3(scene_data.camera_inverse_tangent_matrix) * tangent; + binormal = (scene_data.inv_camera_matrix * vec4(binormal, 0.0)).xyz; + tangent = (scene_data.inv_camera_matrix * vec4(tangent, 0.0)).xyz; #endif #endif diff --git a/servers/rendering/renderer_rd/shaders/screen_space_reflection.glsl b/servers/rendering/renderer_rd/shaders/screen_space_reflection.glsl index 78e0a85341..fde5688301 100644 --- a/servers/rendering/renderer_rd/shaders/screen_space_reflection.glsl +++ b/servers/rendering/renderer_rd/shaders/screen_space_reflection.glsl @@ -223,7 +223,6 @@ void main() { blur_radius = (a * (sqrt(a2 + fh2) - a)) / (4.0f * h); } } - final_color = imageLoad(source_diffuse, ivec2((final_pos - 0.5) * pixel_size)); imageStore(blur_radius_image, ssC, vec4(blur_radius / 255.0)); //stored in r8 diff --git a/servers/rendering/renderer_rd/shaders/ssao_downsample.glsl b/servers/rendering/renderer_rd/shaders/ss_effects_downsample.glsl index ee0db6a6f0..bdabc146d8 100644 --- a/servers/rendering/renderer_rd/shaders/ssao_downsample.glsl +++ b/servers/rendering/renderer_rd/shaders/ss_effects_downsample.glsl @@ -42,6 +42,9 @@ layout(r16f, set = 1, binding = 0) uniform restrict writeonly image2DArray dest_ layout(r16f, set = 2, binding = 0) uniform restrict writeonly image2DArray dest_image1; layout(r16f, set = 2, binding = 1) uniform restrict writeonly image2DArray dest_image2; layout(r16f, set = 2, binding = 2) uniform restrict writeonly image2DArray dest_image3; +#ifdef GENERATE_FULL_MIPS +layout(r16f, set = 2, binding = 3) uniform restrict writeonly image2DArray dest_image4; +#endif #endif vec4 screen_space_to_view_space_depth(vec4 p_depth) { @@ -150,7 +153,27 @@ void prepare_depths_and_mips(vec4 p_samples, uvec2 p_output_coord, uvec2 p_gtid) float avg = mip_smart_average(vec4(sample_00, sample_01, sample_10, sample_11)); imageStore(dest_image3, ivec3(p_output_coord.x, p_output_coord.y, depth_array_index), vec4(avg)); +#ifndef GENERATE_FULL_MIPS + } +#else + depth_buffer[depth_array_index][buffer_coord.x][buffer_coord.y] = avg; } + still_alive = p_gtid.x % 16 == depth_array_offset.x && depth_array_offset.y % 16 == depth_array_offset.y; + + p_output_coord /= 2; + groupMemoryBarrier(); + barrier(); + + if (still_alive) { + float sample_00 = depth_buffer[depth_array_index][buffer_coord.x + 0][buffer_coord.y + 0]; + float sample_01 = depth_buffer[depth_array_index][buffer_coord.x + 0][buffer_coord.y + 8]; + float sample_10 = depth_buffer[depth_array_index][buffer_coord.x + 8][buffer_coord.y + 0]; + float sample_11 = depth_buffer[depth_array_index][buffer_coord.x + 8][buffer_coord.y + 8]; + + float avg = mip_smart_average(vec4(sample_00, sample_01, sample_10, sample_11)); + imageStore(dest_image4, ivec3(p_output_coord.x, p_output_coord.y, depth_array_index), vec4(avg)); + } +#endif } #else #ifndef USE_HALF_BUFFERS diff --git a/servers/rendering/renderer_rd/shaders/ssao.glsl b/servers/rendering/renderer_rd/shaders/ssao.glsl index 6e945edfcd..18cab75c3b 100644 --- a/servers/rendering/renderer_rd/shaders/ssao.glsl +++ b/servers/rendering/renderer_rd/shaders/ssao.glsl @@ -23,8 +23,6 @@ #VERSION_DEFINES -#define SSAO_ADAPTIVE_TAP_BASE_COUNT 5 - #define INTELSSAO_MAIN_DISK_SAMPLE_COUNT (32) const vec4 sample_pattern[INTELSSAO_MAIN_DISK_SAMPLE_COUNT] = { vec4(0.78488064, 0.56661671, 1.500000, -0.126083), vec4(0.26022232, -0.29575172, 1.500000, -1.064030), vec4(0.10459357, 0.08372527, 1.110000, -2.730563), vec4(-0.68286800, 0.04963045, 1.090000, -0.498827), @@ -62,7 +60,6 @@ const int num_taps[5] = { 3, 5, 12, 0, 0 }; #define SSAO_REDUCE_RADIUS_NEAR_SCREEN_BORDER_ENABLE_AT_QUALITY_PRESET (1) #define SSAO_MAX_TAPS 32 -#define SSAO_MAX_REF_TAPS 512 #define SSAO_ADAPTIVE_TAP_BASE_COUNT 5 #define SSAO_ADAPTIVE_TAP_FLEXIBLE_COUNT (SSAO_MAX_TAPS - SSAO_ADAPTIVE_TAP_BASE_COUNT) #define SSAO_DEPTH_MIP_LEVELS 4 diff --git a/servers/rendering/renderer_rd/shaders/ssao_blur.glsl b/servers/rendering/renderer_rd/shaders/ssao_blur.glsl index d9cd2b4e85..b154f5e527 100644 --- a/servers/rendering/renderer_rd/shaders/ssao_blur.glsl +++ b/servers/rendering/renderer_rd/shaders/ssao_blur.glsl @@ -128,19 +128,19 @@ void main() { #ifdef MODE_NON_SMART - vec2 halfPixel = params.half_screen_pixel_size * 0.5f; + vec2 half_pixel = params.half_screen_pixel_size * 0.5; vec2 uv = (vec2(gl_GlobalInvocationID.xy) + vec2(0.5, 0.5)) * params.half_screen_pixel_size; - vec2 centre = textureLod(source_ssao, vec2(uv), 0.0).xy; + vec2 center = textureLod(source_ssao, vec2(uv), 0.0).xy; vec4 vals; - vals.x = textureLod(source_ssao, vec2(uv + vec2(-halfPixel.x * 3, -halfPixel.y)), 0.0).x; - vals.y = textureLod(source_ssao, vec2(uv + vec2(+halfPixel.x, -halfPixel.y * 3)), 0.0).x; - vals.z = textureLod(source_ssao, vec2(uv + vec2(-halfPixel.x, +halfPixel.y * 3)), 0.0).x; - vals.w = textureLod(source_ssao, vec2(uv + vec2(+halfPixel.x * 3, +halfPixel.y)), 0.0).x; + vals.x = textureLod(source_ssao, vec2(uv + vec2(-half_pixel.x * 3, -half_pixel.y)), 0.0).x; + vals.y = textureLod(source_ssao, vec2(uv + vec2(+half_pixel.x, -half_pixel.y * 3)), 0.0).x; + vals.z = textureLod(source_ssao, vec2(uv + vec2(-half_pixel.x, +half_pixel.y * 3)), 0.0).x; + vals.w = textureLod(source_ssao, vec2(uv + vec2(+half_pixel.x * 3, +half_pixel.y)), 0.0).x; - vec2 sampled = vec2(dot(vals, vec4(0.2)) + centre.x * 0.2, centre.y); + vec2 sampled = vec2(dot(vals, vec4(0.2)) + center.x * 0.2, center.y); #else #ifdef MODE_SMART diff --git a/servers/rendering/renderer_rd/shaders/ssao_importance_map.glsl b/servers/rendering/renderer_rd/shaders/ssao_importance_map.glsl index 687fe1e6e2..23eba34d63 100644 --- a/servers/rendering/renderer_rd/shaders/ssao_importance_map.glsl +++ b/servers/rendering/renderer_rd/shaders/ssao_importance_map.glsl @@ -26,7 +26,7 @@ layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in; #ifdef GENERATE_MAP -layout(set = 0, binding = 0) uniform sampler2DArray source_ssao; +layout(set = 0, binding = 0) uniform sampler2DArray source_texture; #else layout(set = 0, binding = 0) uniform sampler2D source_importance; #endif @@ -56,11 +56,10 @@ void main() { vec2 base_uv = (vec2(base_position) + vec2(0.5f, 0.5f)) * params.half_screen_pixel_size; - float avg = 0.0; float minV = 1.0; float maxV = 0.0; for (int i = 0; i < 4; i++) { - vec4 vals = textureGather(source_ssao, vec3(base_uv, i)); + vec4 vals = textureGather(source_texture, vec3(base_uv, i)); // apply the same modifications that would have been applied in the main shader vals = params.intensity * vals; @@ -69,8 +68,6 @@ void main() { vals = pow(clamp(vals, 0.0, 1.0), vec4(params.power)); - avg += dot(vec4(vals.x, vals.y, vals.z, vals.w), vec4(1.0 / 16.0, 1.0 / 16.0, 1.0 / 16.0, 1.0 / 16.0)); - maxV = max(maxV, max(max(vals.x, vals.y), max(vals.z, vals.w))); minV = min(minV, min(min(vals.x, vals.y), min(vals.z, vals.w))); } diff --git a/servers/rendering/renderer_rd/shaders/ssil.glsl b/servers/rendering/renderer_rd/shaders/ssil.glsl new file mode 100644 index 0000000000..d1f8f42790 --- /dev/null +++ b/servers/rendering/renderer_rd/shaders/ssil.glsl @@ -0,0 +1,444 @@ +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Copyright (c) 2016, Intel Corporation +// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated +// documentation files (the "Software"), to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to +// permit persons to whom the Software is furnished to do so, subject to the following conditions: +// The above copyright notice and this permission notice shall be included in all copies or substantial portions of +// the Software. +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO +// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// File changes (yyyy-mm-dd) +// 2016-09-07: filip.strugar@intel.com: first commit +// 2020-12-05: clayjohn: convert to Vulkan and Godot +// 2021-05-27: clayjohn: convert SSAO to SSIL +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + +#[compute] + +#version 450 + +#VERSION_DEFINES + +#define SSIL_MAIN_DISK_SAMPLE_COUNT (32) +const vec4 sample_pattern[SSIL_MAIN_DISK_SAMPLE_COUNT] = { + vec4(0.78488064, 0.56661671, 1.500000, -0.126083), vec4(0.26022232, -0.29575172, 1.500000, -1.064030), vec4(0.10459357, 0.08372527, 1.110000, -2.730563), vec4(-0.68286800, 0.04963045, 1.090000, -0.498827), + vec4(-0.13570161, -0.64190155, 1.250000, -0.532765), vec4(-0.26193795, -0.08205118, 0.670000, -1.783245), vec4(-0.61177456, 0.66664219, 0.710000, -0.044234), vec4(0.43675563, 0.25119025, 0.610000, -1.167283), + vec4(0.07884444, 0.86618668, 0.640000, -0.459002), vec4(-0.12790935, -0.29869005, 0.600000, -1.729424), vec4(-0.04031125, 0.02413622, 0.600000, -4.792042), vec4(0.16201244, -0.52851415, 0.790000, -1.067055), + vec4(-0.70991218, 0.47301072, 0.640000, -0.335236), vec4(0.03277707, -0.22349690, 0.600000, -1.982384), vec4(0.68921727, 0.36800742, 0.630000, -0.266718), vec4(0.29251814, 0.37775412, 0.610000, -1.422520), + vec4(-0.12224089, 0.96582592, 0.600000, -0.426142), vec4(0.11071457, -0.16131058, 0.600000, -2.165947), vec4(0.46562141, -0.59747696, 0.600000, -0.189760), vec4(-0.51548797, 0.11804193, 0.600000, -1.246800), + vec4(0.89141309, -0.42090443, 0.600000, 0.028192), vec4(-0.32402530, -0.01591529, 0.600000, -1.543018), vec4(0.60771245, 0.41635221, 0.600000, -0.605411), vec4(0.02379565, -0.08239821, 0.600000, -3.809046), + vec4(0.48951152, -0.23657045, 0.600000, -1.189011), vec4(-0.17611565, -0.81696892, 0.600000, -0.513724), vec4(-0.33930185, -0.20732205, 0.600000, -1.698047), vec4(-0.91974425, 0.05403209, 0.600000, 0.062246), + vec4(-0.15064627, -0.14949332, 0.600000, -1.896062), vec4(0.53180975, -0.35210401, 0.600000, -0.758838), vec4(0.41487166, 0.81442589, 0.600000, -0.505648), vec4(-0.24106961, -0.32721516, 0.600000, -1.665244) +}; + +// these values can be changed (up to SSIL_MAX_TAPS) with no changes required elsewhere; values for 4th and 5th preset are ignored but array needed to avoid compilation errors +// the actual number of texture samples is two times this value (each "tap" has two symmetrical depth texture samples) +const int num_taps[5] = { 3, 5, 12, 0, 0 }; + +#define SSIL_TILT_SAMPLES_ENABLE_AT_QUALITY_PRESET (99) // to disable simply set to 99 or similar +#define SSIL_TILT_SAMPLES_AMOUNT (0.4) +// +#define SSIL_HALOING_REDUCTION_ENABLE_AT_QUALITY_PRESET (1) // to disable simply set to 99 or similar +#define SSIL_HALOING_REDUCTION_AMOUNT (0.8) // values from 0.0 - 1.0, 1.0 means max weighting (will cause artifacts, 0.8 is more reasonable) +// +#define SSIL_DEPTH_MIPS_ENABLE_AT_QUALITY_PRESET (2) +#define SSIL_DEPTH_MIPS_GLOBAL_OFFSET (-4.3) // best noise/quality/performance tradeoff, found empirically +// +// !!warning!! the edge handling is hard-coded to 'disabled' on quality level 0, and enabled above, on the C++ side; while toggling it here will work for +// testing purposes, it will not yield performance gains (or correct results) +#define SSIL_DEPTH_BASED_EDGES_ENABLE_AT_QUALITY_PRESET (1) +// +#define SSIL_REDUCE_RADIUS_NEAR_SCREEN_BORDER_ENABLE_AT_QUALITY_PRESET (1) + +#define SSIL_MAX_TAPS 32 +#define SSIL_ADAPTIVE_TAP_BASE_COUNT 5 +#define SSIL_ADAPTIVE_TAP_FLEXIBLE_COUNT (SSIL_MAX_TAPS - SSIL_ADAPTIVE_TAP_BASE_COUNT) +#define SSIL_DEPTH_MIP_LEVELS 4 + +layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in; + +layout(set = 0, binding = 0) uniform sampler2DArray source_depth_mipmaps; +layout(rgba8, set = 0, binding = 1) uniform restrict readonly image2D source_normal; +layout(set = 0, binding = 2) uniform Constants { //get into a lower set + vec4 rotation_matrices[20]; +} +constants; + +#ifdef ADAPTIVE +layout(rgba16, set = 1, binding = 0) uniform restrict readonly image2DArray source_ssil; +layout(set = 1, binding = 1) uniform sampler2D source_importance; +layout(set = 1, binding = 2, std430) buffer Counter { + uint sum; +} +counter; +#endif + +layout(rgba16, set = 2, binding = 0) uniform restrict writeonly image2D dest_image; +layout(r8, set = 2, binding = 1) uniform image2D edges_weights_image; + +layout(set = 3, binding = 0) uniform sampler2D last_frame; +layout(set = 3, binding = 1) uniform ProjectionConstants { + mat4 reprojection; +} +projection_constants; + +layout(push_constant, binding = 3, std430) uniform Params { + ivec2 screen_size; + int pass; + int quality; + + vec2 half_screen_pixel_size; + vec2 half_screen_pixel_size_x025; + + vec2 NDC_to_view_mul; + vec2 NDC_to_view_add; + + vec2 pad2; + float z_near; + float z_far; + + float radius; + float intensity; + int size_multiplier; + int pad; + + float fade_out_mul; + float fade_out_add; + float normal_rejection_amount; + float inv_radius_near_limit; + + bool is_orthogonal; + float neg_inv_radius; + float load_counter_avg_div; + float adaptive_sample_limit; + + ivec2 pass_coord_offset; + vec2 pass_uv_offset; +} +params; + +float pack_edges(vec4 p_edgesLRTB) { + p_edgesLRTB = round(clamp(p_edgesLRTB, 0.0, 1.0) * 3.05); + return dot(p_edgesLRTB, vec4(64.0 / 255.0, 16.0 / 255.0, 4.0 / 255.0, 1.0 / 255.0)); +} + +vec3 NDC_to_view_space(vec2 p_pos, float p_viewspace_depth) { + if (params.is_orthogonal) { + return vec3((params.NDC_to_view_mul * p_pos.xy + params.NDC_to_view_add), p_viewspace_depth); + } else { + return vec3((params.NDC_to_view_mul * p_pos.xy + params.NDC_to_view_add) * p_viewspace_depth, p_viewspace_depth); + } +} + +// calculate effect radius and fit our screen sampling pattern inside it +void calculate_radius_parameters(const float p_pix_center_length, const vec2 p_pixel_size_at_center, out float r_lookup_radius, out float r_radius, out float r_fallof_sq) { + r_radius = params.radius; + + // when too close, on-screen sampling disk will grow beyond screen size; limit this to avoid closeup temporal artifacts + const float too_close_limit = clamp(p_pix_center_length * params.inv_radius_near_limit, 0.0, 1.0) * 0.8 + 0.2; + + r_radius *= too_close_limit; + + // 0.85 is to reduce the radius to allow for more samples on a slope to still stay within influence + r_lookup_radius = (0.85 * r_radius) / p_pixel_size_at_center.x; + + // used to calculate falloff (both for AO samples and per-sample weights) + r_fallof_sq = -1.0 / (r_radius * r_radius); +} + +vec4 calculate_edges(const float p_center_z, const float p_left_z, const float p_right_z, const float p_top_z, const float p_bottom_z) { + // slope-sensitive depth-based edge detection + vec4 edgesLRTB = vec4(p_left_z, p_right_z, p_top_z, p_bottom_z) - p_center_z; + vec4 edgesLRTB_slope_adjusted = edgesLRTB + edgesLRTB.yxwz; + edgesLRTB = min(abs(edgesLRTB), abs(edgesLRTB_slope_adjusted)); + return clamp((1.3 - edgesLRTB / (p_center_z * 0.040)), 0.0, 1.0); +} + +vec3 decode_normal(vec3 p_encoded_normal) { + vec3 normal = p_encoded_normal * 2.0 - 1.0; + return normal; +} + +vec3 load_normal(ivec2 p_pos) { + vec3 encoded_normal = imageLoad(source_normal, p_pos).xyz; + encoded_normal.z = 1.0 - encoded_normal.z; + return decode_normal(encoded_normal); +} + +vec3 load_normal(ivec2 p_pos, ivec2 p_offset) { + vec3 encoded_normal = imageLoad(source_normal, p_pos + p_offset).xyz; + encoded_normal.z = 1.0 - encoded_normal.z; + return decode_normal(encoded_normal); +} + +// all vectors in viewspace +float calculate_pixel_obscurance(vec3 p_pixel_normal, vec3 p_hit_delta, float p_fallof_sq) { + float length_sq = dot(p_hit_delta, p_hit_delta); + float NdotD = dot(p_pixel_normal, p_hit_delta) / sqrt(length_sq); + + float falloff_mult = max(0.0, length_sq * p_fallof_sq + 1.0); + + return max(0, NdotD - 0.05) * falloff_mult; +} + +void SSIL_tap_inner(const int p_quality_level, inout vec3 r_color_sum, inout float r_obscurance_sum, inout float r_weight_sum, const vec2 p_sampling_uv, const float p_mip_level, const vec3 p_pix_center_pos, vec3 p_pixel_normal, const float p_fallof_sq, const float p_weight_mod) { + // get depth at sample + float viewspace_sample_z = textureLod(source_depth_mipmaps, vec3(p_sampling_uv, params.pass), p_mip_level).x; + vec3 sample_normal = load_normal(ivec2(p_sampling_uv * vec2(params.screen_size))); + + // convert to viewspace + vec3 hit_pos = NDC_to_view_space(p_sampling_uv.xy, viewspace_sample_z); + vec3 hit_delta = hit_pos - p_pix_center_pos; + + float obscurance = calculate_pixel_obscurance(p_pixel_normal, hit_delta, p_fallof_sq); + float weight = 1.0; + + if (p_quality_level >= SSIL_HALOING_REDUCTION_ENABLE_AT_QUALITY_PRESET) { + float reduct = max(0, -hit_delta.z); + reduct = clamp(reduct * params.neg_inv_radius + 2.0, 0.0, 1.0); + weight = SSIL_HALOING_REDUCTION_AMOUNT * reduct + (1.0 - SSIL_HALOING_REDUCTION_AMOUNT); + } + + // Translate sampling_uv to last screen's coordinates + const vec4 sample_pos = projection_constants.reprojection * vec4(p_sampling_uv * 2.0 - 1.0, (viewspace_sample_z - params.z_near) / (params.z_far - params.z_near) * 2.0 - 1.0, 1.0); + vec2 reprojected_sampling_uv = (sample_pos.xy / sample_pos.w) * 0.5 + 0.5; + + weight *= p_weight_mod; + + r_obscurance_sum += obscurance * weight; + + vec3 sample_color = textureLod(last_frame, reprojected_sampling_uv, 5.0).rgb; + // Reduce impact of fireflies by tonemapping before averaging: http://graphicrants.blogspot.com/2013/12/tone-mapping.html + sample_color /= (1.0 + dot(sample_color, vec3(0.299, 0.587, 0.114))); + r_color_sum += sample_color * obscurance * weight * mix(1.0, smoothstep(0.0, 0.1, -dot(sample_normal, normalize(hit_delta))), params.normal_rejection_amount); + r_weight_sum += weight; +} + +void SSILTap(const int p_quality_level, inout vec3 r_color_sum, inout float r_obscurance_sum, inout float r_weight_sum, const int p_tap_index, const mat2 p_rot_scale, const vec3 p_pix_center_pos, vec3 p_pixel_normal, const vec2 p_normalized_screen_pos, const float p_mip_offset, const float p_fallof_sq, float p_weight_mod, vec2 p_norm_xy, float p_norm_xy_length) { + vec2 sample_offset; + float sample_pow_2_len; + + // patterns + { + vec4 new_sample = sample_pattern[p_tap_index]; + sample_offset = new_sample.xy * p_rot_scale; + sample_pow_2_len = new_sample.w; // precalculated, same as: sample_pow_2_len = log2( length( new_sample.xy ) ); + p_weight_mod *= new_sample.z; + } + + // snap to pixel center (more correct obscurance math, avoids artifacts) + sample_offset = round(sample_offset); + + // calculate MIP based on the sample distance from the centre, similar to as described + // in http://graphics.cs.williams.edu/papers/SAOHPG12/. + float mip_level = (p_quality_level < SSIL_DEPTH_MIPS_ENABLE_AT_QUALITY_PRESET) ? (0) : (sample_pow_2_len + p_mip_offset); + + vec2 sampling_uv = sample_offset * params.half_screen_pixel_size + p_normalized_screen_pos; + + SSIL_tap_inner(p_quality_level, r_color_sum, r_obscurance_sum, r_weight_sum, sampling_uv, mip_level, p_pix_center_pos, p_pixel_normal, p_fallof_sq, p_weight_mod); + + // for the second tap, just use the mirrored offset + vec2 sample_offset_mirrored_uv = -sample_offset; + + // tilt the second set of samples so that the disk is effectively rotated by the normal + // effective at removing one set of artifacts, but too expensive for lower quality settings + if (p_quality_level >= SSIL_TILT_SAMPLES_ENABLE_AT_QUALITY_PRESET) { + float dot_norm = dot(sample_offset_mirrored_uv, p_norm_xy); + sample_offset_mirrored_uv -= dot_norm * p_norm_xy_length * p_norm_xy; + sample_offset_mirrored_uv = round(sample_offset_mirrored_uv); + } + + // snap to pixel center (more correct obscurance math, avoids artifacts) + vec2 sampling_mirrored_uv = sample_offset_mirrored_uv * params.half_screen_pixel_size + p_normalized_screen_pos; + + SSIL_tap_inner(p_quality_level, r_color_sum, r_obscurance_sum, r_weight_sum, sampling_mirrored_uv, mip_level, p_pix_center_pos, p_pixel_normal, p_fallof_sq, p_weight_mod); +} + +void generate_SSIL(out vec3 r_color, out vec4 r_edges, out float r_obscurance, out float r_weight, const vec2 p_pos, int p_quality_level, bool p_adaptive_base) { + vec2 pos_rounded = trunc(p_pos); + uvec2 upos = uvec2(pos_rounded); + + const int number_of_taps = (p_adaptive_base) ? (SSIL_ADAPTIVE_TAP_BASE_COUNT) : (num_taps[p_quality_level]); + float pix_z, pix_left_z, pix_top_z, pix_right_z, pix_bottom_z; + + vec4 valuesUL = textureGather(source_depth_mipmaps, vec3(pos_rounded * params.half_screen_pixel_size, params.pass)); + vec4 valuesBR = textureGather(source_depth_mipmaps, vec3((pos_rounded + vec2(1.0)) * params.half_screen_pixel_size, params.pass)); + + // get this pixel's viewspace depth + pix_z = valuesUL.y; + + // get left right top bottom neighbouring pixels for edge detection (gets compiled out on quality_level == 0) + pix_left_z = valuesUL.x; + pix_top_z = valuesUL.z; + pix_right_z = valuesBR.z; + pix_bottom_z = valuesBR.x; + + vec2 normalized_screen_pos = pos_rounded * params.half_screen_pixel_size + params.half_screen_pixel_size_x025; + vec3 pix_center_pos = NDC_to_view_space(normalized_screen_pos, pix_z); + + // Load this pixel's viewspace normal + uvec2 full_res_coord = upos * 2 * params.size_multiplier + params.pass_coord_offset.xy; + vec3 pixel_normal = load_normal(ivec2(full_res_coord)); + + const vec2 pixel_size_at_center = NDC_to_view_space(normalized_screen_pos.xy + params.half_screen_pixel_size, pix_center_pos.z).xy - pix_center_pos.xy; + + float pixel_lookup_radius; + float fallof_sq; + + // calculate effect radius and fit our screen sampling pattern inside it + float viewspace_radius; + calculate_radius_parameters(length(pix_center_pos), pixel_size_at_center, pixel_lookup_radius, viewspace_radius, fallof_sq); + + // calculate samples rotation/scaling + mat2 rot_scale_matrix; + uint pseudo_random_index; + + { + vec4 rotation_scale; + // reduce effect radius near the screen edges slightly; ideally, one would render a larger depth buffer (5% on each side) instead + if (!p_adaptive_base && (p_quality_level >= SSIL_REDUCE_RADIUS_NEAR_SCREEN_BORDER_ENABLE_AT_QUALITY_PRESET)) { + float near_screen_border = min(min(normalized_screen_pos.x, 1.0 - normalized_screen_pos.x), min(normalized_screen_pos.y, 1.0 - normalized_screen_pos.y)); + near_screen_border = clamp(10.0 * near_screen_border + 0.6, 0.0, 1.0); + pixel_lookup_radius *= near_screen_border; + } + + // load & update pseudo-random rotation matrix + pseudo_random_index = uint(pos_rounded.y * 2 + pos_rounded.x) % 5; + rotation_scale = constants.rotation_matrices[params.pass * 5 + pseudo_random_index]; + rot_scale_matrix = mat2(rotation_scale.x * pixel_lookup_radius, rotation_scale.y * pixel_lookup_radius, rotation_scale.z * pixel_lookup_radius, rotation_scale.w * pixel_lookup_radius); + } + + // the main obscurance & sample weight storage + vec3 color_sum = vec3(0.0); + float obscurance_sum = 0.0; + float weight_sum = 0.0; + + // edge mask for between this and left/right/top/bottom neighbour pixels - not used in quality level 0 so initialize to "no edge" (1 is no edge, 0 is edge) + vec4 edgesLRTB = vec4(1.0, 1.0, 1.0, 1.0); + + // Move center pixel slightly towards camera to avoid imprecision artifacts due to using of 16bit depth buffer; a lot smaller offsets needed when using 32bit floats + pix_center_pos *= 0.9992; + + if (!p_adaptive_base && (p_quality_level >= SSIL_DEPTH_BASED_EDGES_ENABLE_AT_QUALITY_PRESET)) { + edgesLRTB = calculate_edges(pix_z, pix_left_z, pix_right_z, pix_top_z, pix_bottom_z); + } + + const float global_mip_offset = SSIL_DEPTH_MIPS_GLOBAL_OFFSET; + float mip_offset = (p_quality_level < SSIL_DEPTH_MIPS_ENABLE_AT_QUALITY_PRESET) ? (0) : (log2(pixel_lookup_radius) + global_mip_offset); + + // Used to tilt the second set of samples so that the disk is effectively rotated by the normal + // effective at removing one set of artifacts, but too expensive for lower quality settings + vec2 norm_xy = vec2(pixel_normal.x, pixel_normal.y); + float norm_xy_length = length(norm_xy); + norm_xy /= vec2(norm_xy_length, -norm_xy_length); + norm_xy_length *= SSIL_TILT_SAMPLES_AMOUNT; + + // standard, non-adaptive approach + if ((p_quality_level != 3) || p_adaptive_base) { + for (int i = 0; i < number_of_taps; i++) { + SSILTap(p_quality_level, color_sum, obscurance_sum, weight_sum, i, rot_scale_matrix, pix_center_pos, pixel_normal, normalized_screen_pos, mip_offset, fallof_sq, 1.0, norm_xy, norm_xy_length); + } + } +#ifdef ADAPTIVE + else { + // add new ones if needed + vec2 full_res_uv = normalized_screen_pos + params.pass_uv_offset.xy; + float importance = textureLod(source_importance, full_res_uv, 0.0).x; + + //Need to store obscurance from base pass + // load existing base values + vec4 base_values = imageLoad(source_ssil, ivec3(upos, params.pass)); + weight_sum += imageLoad(edges_weights_image, ivec2(upos)).r * float(SSIL_ADAPTIVE_TAP_BASE_COUNT * 4.0); + color_sum += (base_values.rgb) * weight_sum; + obscurance_sum += (base_values.a) * weight_sum; + + // increase importance around edges + float edge_count = dot(1.0 - edgesLRTB, vec4(1.0, 1.0, 1.0, 1.0)); + + float avg_total_importance = float(counter.sum) * params.load_counter_avg_div; + + float importance_limiter = clamp(params.adaptive_sample_limit / avg_total_importance, 0.0, 1.0); + importance *= importance_limiter; + + float additional_sample_count = SSIL_ADAPTIVE_TAP_FLEXIBLE_COUNT * importance; + + const float blend_range = 3.0; + const float blend_range_inv = 1.0 / blend_range; + + additional_sample_count += 0.5; + uint additional_samples = uint(additional_sample_count); + uint additional_samples_to = min(SSIL_MAX_TAPS, additional_samples + SSIL_ADAPTIVE_TAP_BASE_COUNT); + + for (uint i = SSIL_ADAPTIVE_TAP_BASE_COUNT; i < additional_samples_to; i++) { + additional_sample_count -= 1.0f; + float weight_mod = clamp(additional_sample_count * blend_range_inv, 0.0, 1.0); + SSILTap(p_quality_level, color_sum, obscurance_sum, weight_sum, int(i), rot_scale_matrix, pix_center_pos, pixel_normal, normalized_screen_pos, mip_offset, fallof_sq, weight_mod, norm_xy, norm_xy_length); + } + } +#endif + + // Early out for adaptive base + if (p_adaptive_base) { + vec3 color = color_sum / weight_sum; + + r_color = color; + r_edges = vec4(0.0); + r_obscurance = obscurance_sum / weight_sum; + r_weight = weight_sum; + return; + } + + // Calculate weighted average + vec3 color = color_sum / weight_sum; + color /= 1.0 - dot(color, vec3(0.299, 0.587, 0.114)); + + // Calculate fadeout (1 close, gradient, 0 far) + float fade_out = clamp(pix_center_pos.z * params.fade_out_mul + params.fade_out_add, 0.0, 1.0); + + // Reduce the SSIL if we're on the edge to remove artifacts on edges (we don't care for the lower quality one) + if (!p_adaptive_base && (p_quality_level >= SSIL_DEPTH_BASED_EDGES_ENABLE_AT_QUALITY_PRESET)) { + // when there's more than 2 opposite edges, start fading out the occlusion to reduce aliasing artifacts + float edge_fadeout_factor = clamp((1.0 - edgesLRTB.x - edgesLRTB.y) * 0.35, 0.0, 1.0) + clamp((1.0 - edgesLRTB.z - edgesLRTB.w) * 0.35, 0.0, 1.0); + + fade_out *= clamp(1.0 - edge_fadeout_factor, 0.0, 1.0); + } + + color = params.intensity * color; + + color *= fade_out; + + // outputs! + r_color = color; + r_edges = edgesLRTB; // These are used to prevent blurring across edges, 1 means no edge, 0 means edge, 0.5 means half way there, etc. + r_obscurance = clamp((obscurance_sum / weight_sum) * params.intensity, 0.0, 1.0); + r_weight = weight_sum; +} + +void main() { + vec3 out_color; + float out_obscurance; + float out_weight; + vec4 out_edges; + ivec2 ssC = ivec2(gl_GlobalInvocationID.xy); + if (any(greaterThanEqual(ssC, params.screen_size))) { //too large, do nothing + return; + } + + vec2 uv = vec2(gl_GlobalInvocationID) + vec2(0.5); +#ifdef SSIL_BASE + generate_SSIL(out_color, out_edges, out_obscurance, out_weight, uv, params.quality, true); + + imageStore(dest_image, ssC, vec4(out_color, out_obscurance)); + imageStore(edges_weights_image, ssC, vec4(out_weight / (float(SSIL_ADAPTIVE_TAP_BASE_COUNT) * 4.0))); +#else + generate_SSIL(out_color, out_edges, out_obscurance, out_weight, uv, params.quality, false); // pass in quality levels + + imageStore(dest_image, ssC, vec4(out_color, out_obscurance)); + imageStore(edges_weights_image, ssC, vec4(pack_edges(out_edges))); +#endif +} diff --git a/servers/rendering/renderer_rd/shaders/ssil_blur.glsl b/servers/rendering/renderer_rd/shaders/ssil_blur.glsl new file mode 100644 index 0000000000..11861e261f --- /dev/null +++ b/servers/rendering/renderer_rd/shaders/ssil_blur.glsl @@ -0,0 +1,124 @@ +#[compute] + +#version 450 + +#VERSION_DEFINES + +layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in; + +layout(set = 0, binding = 0) uniform sampler2D source_ssil; + +layout(rgba16, set = 1, binding = 0) uniform restrict writeonly image2D dest_image; + +layout(r8, set = 2, binding = 0) uniform restrict readonly image2D source_edges; + +layout(push_constant, binding = 1, std430) uniform Params { + float edge_sharpness; + float pad; + vec2 half_screen_pixel_size; +} +params; + +vec4 unpack_edges(float p_packed_val) { + uint packed_val = uint(p_packed_val * 255.5); + vec4 edgesLRTB; + edgesLRTB.x = float((packed_val >> 6) & 0x03) / 3.0; + edgesLRTB.y = float((packed_val >> 4) & 0x03) / 3.0; + edgesLRTB.z = float((packed_val >> 2) & 0x03) / 3.0; + edgesLRTB.w = float((packed_val >> 0) & 0x03) / 3.0; + + return clamp(edgesLRTB + params.edge_sharpness, 0.0, 1.0); +} + +void add_sample(vec4 p_ssil_value, float p_edge_value, inout vec4 r_sum, inout float r_sum_weight) { + float weight = p_edge_value; + + r_sum += (weight * p_ssil_value); + r_sum_weight += weight; +} + +#ifdef MODE_WIDE +vec4 sample_blurred_wide(ivec2 p_pos, vec2 p_coord) { + vec4 ssil_value = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, 0)); + vec4 ssil_valueL = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(-2, 0)); + vec4 ssil_valueT = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, -2)); + vec4 ssil_valueR = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(2, 0)); + vec4 ssil_valueB = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, 2)); + + vec4 edgesLRTB = unpack_edges(imageLoad(source_edges, p_pos).r); + edgesLRTB.x *= unpack_edges(imageLoad(source_edges, p_pos + ivec2(-2, 0)).r).y; + edgesLRTB.z *= unpack_edges(imageLoad(source_edges, p_pos + ivec2(0, -2)).r).w; + edgesLRTB.y *= unpack_edges(imageLoad(source_edges, p_pos + ivec2(2, 0)).r).x; + edgesLRTB.w *= unpack_edges(imageLoad(source_edges, p_pos + ivec2(0, 2)).r).z; + + float sum_weight = 0.8; + vec4 sum = ssil_value * sum_weight; + + add_sample(ssil_valueL, edgesLRTB.x, sum, sum_weight); + add_sample(ssil_valueR, edgesLRTB.y, sum, sum_weight); + add_sample(ssil_valueT, edgesLRTB.z, sum, sum_weight); + add_sample(ssil_valueB, edgesLRTB.w, sum, sum_weight); + + vec4 ssil_avg = sum / sum_weight; + + ssil_value = ssil_avg; + + return ssil_value; +} +#endif + +#ifdef MODE_SMART +vec4 sample_blurred(ivec2 p_pos, vec2 p_coord) { + vec4 vC = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, 0)); + vec4 vL = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(-1, 0)); + vec4 vT = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, -1)); + vec4 vR = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(1, 0)); + vec4 vB = textureLodOffset(source_ssil, vec2(p_coord), 0.0, ivec2(0, 1)); + + float packed_edges = imageLoad(source_edges, p_pos).r; + vec4 edgesLRTB = unpack_edges(packed_edges); + + float sum_weight = 0.5; + vec4 sum = vC * sum_weight; + + add_sample(vL, edgesLRTB.x, sum, sum_weight); + add_sample(vR, edgesLRTB.y, sum, sum_weight); + add_sample(vT, edgesLRTB.z, sum, sum_weight); + add_sample(vB, edgesLRTB.w, sum, sum_weight); + + vec4 ssil_avg = sum / sum_weight; + + vec4 ssil_value = ssil_avg; + + return ssil_value; +} +#endif + +void main() { + // Pixel being shaded + ivec2 ssC = ivec2(gl_GlobalInvocationID.xy); + +#ifdef MODE_NON_SMART + + vec2 half_pixel = params.half_screen_pixel_size * 0.5; + + vec2 uv = (vec2(gl_GlobalInvocationID.xy) + vec2(0.5, 0.5)) * params.half_screen_pixel_size; + + vec4 centre = textureLod(source_ssil, uv, 0.0); + + vec4 value = textureLod(source_ssil, vec2(uv + vec2(-half_pixel.x * 3, -half_pixel.y)), 0.0) * 0.2; + value += textureLod(source_ssil, vec2(uv + vec2(+half_pixel.x, -half_pixel.y * 3)), 0.0) * 0.2; + value += textureLod(source_ssil, vec2(uv + vec2(-half_pixel.x, +half_pixel.y * 3)), 0.0) * 0.2; + value += textureLod(source_ssil, vec2(uv + vec2(+half_pixel.x * 3, +half_pixel.y)), 0.0) * 0.2; + + vec4 sampled = value + centre * 0.2; + +#else +#ifdef MODE_SMART + vec4 sampled = sample_blurred(ssC, (vec2(gl_GlobalInvocationID.xy) + vec2(0.5, 0.5)) * params.half_screen_pixel_size); +#else // MODE_WIDE + vec4 sampled = sample_blurred_wide(ssC, (vec2(gl_GlobalInvocationID.xy) + vec2(0.5, 0.5)) * params.half_screen_pixel_size); +#endif +#endif // MODE_NON_SMART + imageStore(dest_image, ssC, sampled); +} diff --git a/servers/rendering/renderer_rd/shaders/ssil_importance_map.glsl b/servers/rendering/renderer_rd/shaders/ssil_importance_map.glsl new file mode 100644 index 0000000000..815aa55fd4 --- /dev/null +++ b/servers/rendering/renderer_rd/shaders/ssil_importance_map.glsl @@ -0,0 +1,124 @@ +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Copyright (c) 2016, Intel Corporation +// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated +// documentation files (the "Software"), to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to +// permit persons to whom the Software is furnished to do so, subject to the following conditions: +// The above copyright notice and this permission notice shall be included in all copies or substantial portions of +// the Software. +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO +// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// File changes (yyyy-mm-dd) +// 2016-09-07: filip.strugar@intel.com: first commit +// 2020-12-05: clayjohn: convert to Vulkan and Godot +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + +#[compute] + +#version 450 + +#VERSION_DEFINES + +layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in; + +#ifdef GENERATE_MAP +layout(set = 0, binding = 0) uniform sampler2DArray source_texture; +#else +layout(set = 0, binding = 0) uniform sampler2D source_importance; +#endif +layout(r8, set = 1, binding = 0) uniform restrict writeonly image2D dest_image; + +#ifdef PROCESS_MAPB +layout(set = 2, binding = 0, std430) buffer Counter { + uint sum; +} +counter; +#endif + +layout(push_constant, binding = 1, std430) uniform Params { + vec2 half_screen_pixel_size; + float intensity; + float pad; +} +params; + +void main() { + // Pixel being shaded + ivec2 ssC = ivec2(gl_GlobalInvocationID.xy); + +#ifdef GENERATE_MAP + // importance map stuff + uvec2 base_position = ssC * 2; + + float avg = 0.0; + float minV = 1.0; + float maxV = 0.0; + for (int i = 0; i < 4; i++) { + vec3 value_a = texelFetch(source_texture, ivec3(base_position, i), 0).rgb * params.intensity; + vec3 value_b = texelFetch(source_texture, ivec3(base_position, i) + ivec3(0, 1, 0), 0).rgb * params.intensity; + vec3 value_c = texelFetch(source_texture, ivec3(base_position, i) + ivec3(1, 0, 0), 0).rgb * params.intensity; + vec3 value_d = texelFetch(source_texture, ivec3(base_position, i) + ivec3(1, 1, 0), 0).rgb * params.intensity; + + // Calculate luminance (black and white value) + float a = dot(value_a, vec3(0.2125, 0.7154, 0.0721)); + float b = dot(value_b, vec3(0.2125, 0.7154, 0.0721)); + float c = dot(value_c, vec3(0.2125, 0.7154, 0.0721)); + float d = dot(value_d, vec3(0.2125, 0.7154, 0.0721)); + + maxV = max(maxV, max(max(a, b), max(c, d))); + minV = min(minV, min(min(a, b), min(c, d))); + } + + float min_max_diff = maxV - minV; + + imageStore(dest_image, ssC, vec4(pow(clamp(min_max_diff * 2.0, 0.0, 1.0), 0.6))); +#endif + +#ifdef PROCESS_MAPA + vec2 uv = (vec2(ssC) + 0.5) * params.half_screen_pixel_size * 2.0; + + float centre = textureLod(source_importance, uv, 0.0).x; + + vec2 half_pixel = params.half_screen_pixel_size; + + vec4 vals; + vals.x = textureLod(source_importance, uv + vec2(-half_pixel.x * 3, -half_pixel.y), 0.0).x; + vals.y = textureLod(source_importance, uv + vec2(+half_pixel.x, -half_pixel.y * 3), 0.0).x; + vals.z = textureLod(source_importance, uv + vec2(+half_pixel.x * 3, +half_pixel.y), 0.0).x; + vals.w = textureLod(source_importance, uv + vec2(-half_pixel.x, +half_pixel.y * 3), 0.0).x; + + float avg = dot(vals, vec4(0.25, 0.25, 0.25, 0.25)); + + imageStore(dest_image, ssC, vec4(avg)); +#endif + +#ifdef PROCESS_MAPB + vec2 uv = (vec2(ssC) + 0.5f) * params.half_screen_pixel_size * 2.0; + + float centre = textureLod(source_importance, uv, 0.0).x; + + vec2 half_pixel = params.half_screen_pixel_size; + + vec4 vals; + vals.x = textureLod(source_importance, uv + vec2(-half_pixel.x, -half_pixel.y * 3), 0.0).x; + vals.y = textureLod(source_importance, uv + vec2(+half_pixel.x * 3, -half_pixel.y), 0.0).x; + vals.z = textureLod(source_importance, uv + vec2(+half_pixel.x, +half_pixel.y * 3), 0.0).x; + vals.w = textureLod(source_importance, uv + vec2(-half_pixel.x * 3, +half_pixel.y), 0.0).x; + + float avg = dot(vals, vec4(0.25, 0.25, 0.25, 0.25)); + + imageStore(dest_image, ssC, vec4(avg)); + + // sum the average; to avoid overflowing we assume max AO resolution is not bigger than 16384x16384; so quarter res (used here) will be 4096x4096, which leaves us with 8 bits per pixel + uint sum = uint(clamp(avg, 0.0, 1.0) * 255.0 + 0.5); + + // save every 9th to avoid InterlockedAdd congestion - since we're blurring, this is good enough; compensated by multiplying load_counter_avg_div by 9 + if (((ssC.x % 3) + (ssC.y % 3)) == 0) { + atomicAdd(counter.sum, sum); + } +#endif +} diff --git a/servers/rendering/renderer_rd/shaders/ssil_interleave.glsl b/servers/rendering/renderer_rd/shaders/ssil_interleave.glsl new file mode 100644 index 0000000000..8a7a5ae4fd --- /dev/null +++ b/servers/rendering/renderer_rd/shaders/ssil_interleave.glsl @@ -0,0 +1,102 @@ +#[compute] + +#version 450 + +#VERSION_DEFINES + +layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in; + +layout(rgba16, set = 0, binding = 0) uniform restrict writeonly image2D dest_image; +layout(set = 1, binding = 0) uniform sampler2DArray source_texture; +layout(r8, set = 2, binding = 0) uniform restrict readonly image2DArray source_edges; + +layout(push_constant, binding = 1, std430) uniform Params { + float inv_sharpness; + uint size_modifier; + vec2 pixel_size; +} +params; + +vec4 unpack_edges(float p_packed_val) { + uint packed_val = uint(p_packed_val * 255.5); + vec4 edgesLRTB; + edgesLRTB.x = float((packed_val >> 6) & 0x03) / 3.0; + edgesLRTB.y = float((packed_val >> 4) & 0x03) / 3.0; + edgesLRTB.z = float((packed_val >> 2) & 0x03) / 3.0; + edgesLRTB.w = float((packed_val >> 0) & 0x03) / 3.0; + + return clamp(edgesLRTB + params.inv_sharpness, 0.0, 1.0); +} + +void main() { + ivec2 ssC = ivec2(gl_GlobalInvocationID.xy); + if (any(greaterThanEqual(ssC, ivec2(1.0 / params.pixel_size)))) { //too large, do nothing + return; + } + +#ifdef MODE_SMART + uvec2 pix_pos = uvec2(gl_GlobalInvocationID.xy); + vec2 uv = (gl_GlobalInvocationID.xy + vec2(0.5)) * params.pixel_size; + + // calculate index in the four deinterleaved source array texture + int mx = int(pix_pos.x % 2); + int my = int(pix_pos.y % 2); + int index_center = mx + my * 2; // center index + int index_horizontal = (1 - mx) + my * 2; // neighbouring, horizontal + int index_vertical = mx + (1 - my) * 2; // neighbouring, vertical + int index_diagonal = (1 - mx) + (1 - my) * 2; // diagonal + + vec4 color = texelFetch(source_texture, ivec3(pix_pos / uvec2(params.size_modifier), index_center), 0); + + vec4 edgesLRTB = unpack_edges(imageLoad(source_edges, ivec3(pix_pos / uvec2(params.size_modifier), index_center)).r); + + // convert index shifts to sampling offsets + float fmx = float(mx); + float fmy = float(my); + + // in case of an edge, push sampling offsets away from the edge (towards pixel center) + float fmxe = (edgesLRTB.y - edgesLRTB.x); + float fmye = (edgesLRTB.w - edgesLRTB.z); + + // calculate final sampling offsets and sample using bilinear filter + vec2 uv_horizontal = (gl_GlobalInvocationID.xy + vec2(0.5) + vec2(fmx + fmxe - 0.5, 0.5 - fmy)) * params.pixel_size; + vec4 color_horizontal = textureLod(source_texture, vec3(uv_horizontal, index_horizontal), 0.0); + vec2 uv_vertical = (gl_GlobalInvocationID.xy + vec2(0.5) + vec2(0.5 - fmx, fmy - 0.5 + fmye)) * params.pixel_size; + vec4 color_vertical = textureLod(source_texture, vec3(uv_vertical, index_vertical), 0.0); + vec2 uv_diagonal = (gl_GlobalInvocationID.xy + vec2(0.5) + vec2(fmx - 0.5 + fmxe, fmy - 0.5 + fmye)) * params.pixel_size; + vec4 color_diagonal = textureLod(source_texture, vec3(uv_diagonal, index_diagonal), 0.0); + + // reduce weight for samples near edge - if the edge is on both sides, weight goes to 0 + vec4 blendWeights; + blendWeights.x = 1.0; + blendWeights.y = (edgesLRTB.x + edgesLRTB.y) * 0.5; + blendWeights.z = (edgesLRTB.z + edgesLRTB.w) * 0.5; + blendWeights.w = (blendWeights.y + blendWeights.z) * 0.5; + + // calculate weighted average + float blendWeightsSum = dot(blendWeights, vec4(1.0, 1.0, 1.0, 1.0)); + color += color_horizontal * blendWeights.y; + color += color_vertical * blendWeights.z; + color += color_diagonal * blendWeights.w; + color /= blendWeightsSum; + + imageStore(dest_image, ivec2(gl_GlobalInvocationID.xy), color); +#else // !MODE_SMART + + vec2 uv = (gl_GlobalInvocationID.xy + vec2(0.5)) * params.pixel_size; +#ifdef MODE_HALF + vec4 a = textureLod(source_texture, vec3(uv, 0), 0.0); + vec4 d = textureLod(source_texture, vec3(uv, 3), 0.0); + vec4 avg = (a + d) * 0.5; + +#else + vec4 a = textureLod(source_texture, vec3(uv, 0), 0.0); + vec4 b = textureLod(source_texture, vec3(uv, 1), 0.0); + vec4 c = textureLod(source_texture, vec3(uv, 2), 0.0); + vec4 d = textureLod(source_texture, vec3(uv, 3), 0.0); + vec4 avg = (a + b + c + d) * 0.25; + +#endif + imageStore(dest_image, ivec2(gl_GlobalInvocationID.xy), avg); +#endif +} diff --git a/servers/rendering/renderer_rd/shaders/volumetric_fog_process.glsl b/servers/rendering/renderer_rd/shaders/volumetric_fog_process.glsl index 999e8d0844..7c8d4f7f99 100644 --- a/servers/rendering/renderer_rd/shaders/volumetric_fog_process.glsl +++ b/servers/rendering/renderer_rd/shaders/volumetric_fog_process.glsl @@ -76,19 +76,15 @@ layout(set = 0, binding = 10) uniform sampler shadow_sampler; #define MAX_VOXEL_GI_INSTANCES 8 struct VoxelGIData { - mat4 xform; - vec3 bounds; - float dynamic_range; + mat4 xform; // 64 - 64 - float bias; - float normal_bias; - bool blend_ambient; - uint texture_slot; + vec3 bounds; // 12 - 76 + float dynamic_range; // 4 - 80 - float anisotropy_strength; - float ambient_occlusion; - float ambient_occlusion_size; - uint mipmaps; + float bias; // 4 - 84 + float normal_bias; // 4 - 88 + bool blend_ambient; // 4 - 92 + uint mipmaps; // 4 - 96 }; layout(set = 0, binding = 11, std140) uniform VoxelGIs { diff --git a/servers/rendering/renderer_rd/shaders/voxel_gi.glsl b/servers/rendering/renderer_rd/shaders/voxel_gi.glsl index 779f04ed35..73a97d9df1 100644 --- a/servers/rendering/renderer_rd/shaders/voxel_gi.glsl +++ b/servers/rendering/renderer_rd/shaders/voxel_gi.glsl @@ -13,7 +13,6 @@ layout(local_size_x = 64, local_size_y = 1, local_size_z = 1) in; #ifndef MODE_DYNAMIC #define NO_CHILDREN 0xFFFFFFFF -#define GREY_VEC vec3(0.33333, 0.33333, 0.33333) struct CellChildren { uint children[8]; diff --git a/servers/rendering/renderer_rd/shaders/voxel_gi_debug.glsl b/servers/rendering/renderer_rd/shaders/voxel_gi_debug.glsl index 281c496df3..3f3437f527 100644 --- a/servers/rendering/renderer_rd/shaders/voxel_gi_debug.glsl +++ b/servers/rendering/renderer_rd/shaders/voxel_gi_debug.glsl @@ -90,66 +90,10 @@ void main() { #endif #ifdef MODE_DEBUG_LIGHT - -#ifdef USE_ANISOTROPY - -#define POS_X 0 -#define POS_Y 1 -#define POS_Z 2 -#define NEG_X 3 -#define NEG_Y 4 -#define NEG_Z 5 - - const uint triangle_aniso[12] = uint[]( - NEG_X, - NEG_Z, - NEG_Y, - NEG_Z, - NEG_X, - NEG_Y, - POS_Z, - POS_X, - POS_X, - POS_Y, - POS_Y, - POS_Z); - - color_interp.xyz = texelFetch(sampler3D(color_tex, tex_sampler), ivec3(posu), int(params.level)).xyz * params.dynamic_range; - vec3 aniso_pos = texelFetch(sampler3D(aniso_pos_tex, tex_sampler), ivec3(posu), int(params.level)).xyz; - vec3 aniso_neg = texelFetch(sampler3D(aniso_neg_tex, tex_sampler), ivec3(posu), int(params.level)).xyz; - uint side = triangle_aniso[gl_VertexIndex / 3]; - - float strength = 0.0; - switch (side) { - case POS_X: - strength = aniso_pos.x; - break; - case POS_Y: - strength = aniso_pos.y; - break; - case POS_Z: - strength = aniso_pos.z; - break; - case NEG_X: - strength = aniso_neg.x; - break; - case NEG_Y: - strength = aniso_neg.y; - break; - case NEG_Z: - strength = aniso_neg.z; - break; - } - - color_interp.xyz *= strength; - -#else color_interp = texelFetch(sampler3D(color_tex, tex_sampler), ivec3(posu), int(params.level)); color_interp.xyz *params.dynamic_range; - #endif -#endif float scale = (1 << params.level); gl_Position = params.projection * vec4((vec3(posu) + vertex) * scale, 1.0); diff --git a/servers/rendering/renderer_rd/shaders/voxel_gi_sdf.glsl b/servers/rendering/renderer_rd/shaders/voxel_gi_sdf.glsl index e20b3f680d..3bb4421646 100644 --- a/servers/rendering/renderer_rd/shaders/voxel_gi_sdf.glsl +++ b/servers/rendering/renderer_rd/shaders/voxel_gi_sdf.glsl @@ -6,10 +6,9 @@ layout(local_size_x = 4, local_size_y = 4, local_size_z = 4) in; -#define MAX_DISTANCE 100000 +#define MAX_DISTANCE 100000.0 #define NO_CHILDREN 0xFFFFFFFF -#define GREY_VEC vec3(0.33333, 0.33333, 0.33333) struct CellChildren { uint children[8]; @@ -44,7 +43,7 @@ params; void main() { vec3 pos = vec3(gl_GlobalInvocationID); - float closest_dist = 100000.0; + float closest_dist = MAX_DISTANCE; for (uint i = params.offset; i < params.end; i++) { vec3 posu = vec3(uvec3(cell_data.data[i].position & 0x7FF, (cell_data.data[i].position >> 11) & 0x3FF, cell_data.data[i].position >> 21)); |