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Diffstat (limited to 'source/blender/draw/engines/eevee_next/shaders/eevee_film_lib.glsl')
| -rw-r--r-- | source/blender/draw/engines/eevee_next/shaders/eevee_film_lib.glsl | 701 |
1 files changed, 701 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee_next/shaders/eevee_film_lib.glsl b/source/blender/draw/engines/eevee_next/shaders/eevee_film_lib.glsl new file mode 100644 index 00000000000..087efa9100d --- /dev/null +++ b/source/blender/draw/engines/eevee_next/shaders/eevee_film_lib.glsl @@ -0,0 +1,701 @@ + +/** + * Film accumulation utils functions. + **/ + +#pragma BLENDER_REQUIRE(common_view_lib.glsl) +#pragma BLENDER_REQUIRE(common_math_geom_lib.glsl) +#pragma BLENDER_REQUIRE(eevee_camera_lib.glsl) +#pragma BLENDER_REQUIRE(eevee_velocity_lib.glsl) +#pragma BLENDER_REQUIRE(eevee_colorspace_lib.glsl) + +/* Return scene linear Z depth from the camera or radial depth for panoramic cameras. */ +float film_depth_convert_to_scene(float depth) +{ + if (false /* Panoramic */) { + /* TODO */ + return 1.0; + } + return abs(get_view_z_from_depth(depth)); +} + +/* Load a texture sample in a specific format. Combined pass needs to use this. */ +vec4 film_texelfetch_as_YCoCg_opacity(sampler2D tx, ivec2 texel) +{ + vec4 color = texelFetch(combined_tx, texel, 0); + /* Convert transmittance to opacity. */ + color.a = saturate(1.0 - color.a); + /* Transform to YCoCg for accumulation. */ + color.rgb = colorspace_YCoCg_from_scene_linear(color.rgb); + return color; +} + +/* Returns a weight based on Luma to reduce the flickering introduced by high energy pixels. */ +float film_luma_weight(float luma) +{ + /* Slide 20 of "High Quality Temporal Supersampling" by Brian Karis at Siggraph 2014. */ + /* To preserve more details in dark areas, we use a bigger bias. */ + return 1.0 / (4.0 + luma * film_buf.exposure_scale); +} + +/* -------------------------------------------------------------------- */ +/** \name Filter + * \{ */ + +FilmSample film_sample_get(int sample_n, ivec2 texel_film) +{ +#ifdef PANORAMIC + /* TODO(fclem): Panoramic projection will be more complex. The samples will have to be retrieve + * at runtime, maybe by scanning a whole region. Offset and weight will have to be computed by + * reprojecting the incoming pixel data into film pixel space. */ +#else + +# ifdef SCALED_RENDERING + texel_film /= film_buf.scaling_factor; +# endif + + FilmSample film_sample = film_buf.samples[sample_n]; + film_sample.texel += texel_film + film_buf.offset; + /* Use extend on borders. */ + film_sample.texel = clamp(film_sample.texel, ivec2(0, 0), film_buf.render_extent - 1); + + /* TODO(fclem): Panoramic projection will need to compute the sample weight in the shader + * instead of precomputing it on CPU. */ +# ifdef SCALED_RENDERING + /* We need to compute the real distance and weight since a sample + * can be used by many final pixel. */ + vec2 offset = film_buf.subpixel_offset - vec2(texel_film % film_buf.scaling_factor); + film_sample.weight = film_filter_weight(film_buf.filter_size, len_squared(offset)); +# endif + +#endif /* PANORAMIC */ + + /* Always return a weight above 0 to avoid blind spots between samples. */ + film_sample.weight = max(film_sample.weight, 1e-6); + + return film_sample; +} + +/* Returns the combined weights of all samples affecting this film pixel. */ +float film_weight_accumulation(ivec2 texel_film) +{ +#if 0 /* TODO(fclem): Reference implementation, also needed for panoramic cameras. */ + float weight = 0.0; + for (int i = 0; i < film_buf.samples_len; i++) { + weight += film_sample_get(i, texel_film).weight; + } + return weight; +#endif + return film_buf.samples_weight_total; +} + +void film_sample_accum(FilmSample samp, int pass_id, sampler2D tex, inout vec4 accum) +{ + if (pass_id == -1) { + return; + } + accum += texelFetch(tex, samp.texel, 0) * samp.weight; +} + +void film_sample_accum(FilmSample samp, int pass_id, sampler2D tex, inout float accum) +{ + if (pass_id == -1) { + return; + } + accum += texelFetch(tex, samp.texel, 0).x * samp.weight; +} + +void film_sample_accum( + FilmSample samp, int pass_id, uint layer, sampler2DArray tex, inout vec4 accum) +{ + if (pass_id == -1) { + return; + } + accum += texelFetch(tex, ivec3(samp.texel, layer), 0) * samp.weight; +} + +void film_sample_accum(FilmSample samp, int pass_id, sampler2DArray tex, inout vec4 accum) +{ + film_sample_accum(samp, pass_id, pass_id, tex, accum); +} + +void film_sample_accum(FilmSample samp, int pass_id, sampler2DArray tex, inout float accum) +{ + if (pass_id == -1) { + return; + } + accum += texelFetch(tex, ivec3(samp.texel, pass_id), 0).x * samp.weight; +} + +void film_sample_accum_mist(FilmSample samp, inout float accum) +{ + if (film_buf.mist_id == -1) { + return; + } + float depth = texelFetch(depth_tx, samp.texel, 0).x; + vec2 uv = (vec2(samp.texel) + 0.5) / textureSize(depth_tx, 0).xy; + vec3 vP = get_view_space_from_depth(uv, depth); + bool is_persp = ProjectionMatrix[3][3] == 0.0; + float mist = (is_persp) ? length(vP) : abs(vP.z); + /* Remap to 0..1 range. */ + mist = saturate(mist * film_buf.mist_scale + film_buf.mist_bias); + /* Falloff. */ + mist = pow(mist, film_buf.mist_exponent); + accum += mist * samp.weight; +} + +void film_sample_accum_combined(FilmSample samp, inout vec4 accum, inout float weight_accum) +{ + if (film_buf.combined_id == -1) { + return; + } + vec4 color = film_texelfetch_as_YCoCg_opacity(combined_tx, samp.texel); + + /* Weight by luma to remove fireflies. */ + float weight = film_luma_weight(color.x) * samp.weight; + + accum += color * weight; + weight_accum += weight; +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Load/Store Data + * \{ */ + +/* Returns the distance used to store nearest interpolation data. */ +float film_distance_load(ivec2 texel) +{ + /* Repeat texture coordinates as the weight can be optimized to a small portion of the film. */ + texel = texel % imageSize(in_weight_img).xy; + + if (!film_buf.use_history || film_buf.use_reprojection) { + return 1.0e16; + } + return imageLoad(in_weight_img, ivec3(texel, FILM_WEIGHT_LAYER_DISTANCE)).x; +} + +float film_weight_load(ivec2 texel) +{ + /* Repeat texture coordinates as the weight can be optimized to a small portion of the film. */ + texel = texel % imageSize(in_weight_img).xy; + + if (!film_buf.use_history || film_buf.use_reprojection) { + return 0.0; + } + return imageLoad(in_weight_img, ivec3(texel, FILM_WEIGHT_LAYER_ACCUMULATION)).x; +} + +/* Returns motion in pixel space to retrieve the pixel history. */ +vec2 film_pixel_history_motion_vector(ivec2 texel_sample) +{ + /** + * Dilate velocity by using the nearest pixel in a cross pattern. + * "High Quality Temporal Supersampling" by Brian Karis at Siggraph 2014 (Slide 27) + */ + const ivec2 corners[4] = ivec2[4](ivec2(-2, -2), ivec2(2, -2), ivec2(-2, 2), ivec2(2, 2)); + float min_depth = texelFetch(depth_tx, texel_sample, 0).x; + ivec2 nearest_texel = texel_sample; + for (int i = 0; i < 4; i++) { + ivec2 texel = clamp(texel_sample + corners[i], ivec2(0), textureSize(depth_tx, 0).xy - 1); + float depth = texelFetch(depth_tx, texel, 0).x; + if (min_depth > depth) { + min_depth = depth; + nearest_texel = texel; + } + } + + vec4 vector = velocity_resolve(vector_tx, nearest_texel, min_depth); + + /* Transform to pixel space. */ + vector.xy *= vec2(film_buf.extent); + + return vector.xy; +} + +/* \a t is inter-pixel position. 0 means perfectly on a pixel center. + * Returns weights in both dimensions. + * Multiply each dimension weights to get final pixel weights. */ +void film_get_catmull_rom_weights(vec2 t, out vec2 weights[4]) +{ + vec2 t2 = t * t; + vec2 t3 = t2 * t; + float fc = 0.5; /* Catmull-Rom. */ + + vec2 fct = t * fc; + vec2 fct2 = t2 * fc; + vec2 fct3 = t3 * fc; + weights[0] = (fct2 * 2.0 - fct3) - fct; + weights[1] = (t3 * 2.0 - fct3) + (-t2 * 3.0 + fct2) + 1.0; + weights[2] = (-t3 * 2.0 + fct3) + (t2 * 3.0 - (2.0 * fct2)) + fct; + weights[3] = fct3 - fct2; +} + +/* Load color using a special filter to avoid losing detail. + * \a texel is sample position with subpixel accuracy. */ +vec4 film_sample_catmull_rom(sampler2D color_tx, vec2 input_texel) +{ + vec2 center_texel; + vec2 inter_texel = modf(input_texel, center_texel); + vec2 weights[4]; + film_get_catmull_rom_weights(inter_texel, weights); + +#if 0 /* Reference. 16 Taps. */ + vec4 color = vec4(0.0); + for (int y = 0; y < 4; y++) { + for (int x = 0; x < 4; x++) { + ivec2 texel = ivec2(center_texel) + ivec2(x, y) - 1; + texel = clamp(texel, ivec2(0), textureSize(color_tx, 0).xy - 1); + color += texelFetch(color_tx, texel, 0) * weights[x].x * weights[y].y; + } + } + return color; + +#elif 1 /* Optimize version. 5 Bilinear Taps. */ + /** + * Use optimized version by leveraging bilinear filtering from hardware sampler and by removing + * corner taps. + * From "Filmic SMAA" by Jorge Jimenez at Siggraph 2016 + * http://advances.realtimerendering.com/s2016/Filmic%20SMAA%20v7.pptx + */ + center_texel += 0.5; + + /* Slide 92. */ + vec2 weight_12 = weights[1] + weights[2]; + vec2 uv_12 = (center_texel + weights[2] / weight_12) * film_buf.extent_inv; + vec2 uv_0 = (center_texel - 1.0) * film_buf.extent_inv; + vec2 uv_3 = (center_texel + 2.0) * film_buf.extent_inv; + + vec4 color; + vec4 weight_cross = weight_12.xyyx * vec4(weights[0].yx, weights[3].xy); + float weight_center = weight_12.x * weight_12.y; + + color = textureLod(color_tx, uv_12, 0.0) * weight_center; + color += textureLod(color_tx, vec2(uv_12.x, uv_0.y), 0.0) * weight_cross.x; + color += textureLod(color_tx, vec2(uv_0.x, uv_12.y), 0.0) * weight_cross.y; + color += textureLod(color_tx, vec2(uv_3.x, uv_12.y), 0.0) * weight_cross.z; + color += textureLod(color_tx, vec2(uv_12.x, uv_3.y), 0.0) * weight_cross.w; + /* Re-normalize for the removed corners. */ + return color / (weight_center + sum(weight_cross)); + +#else /* Nearest interpolation for debugging. 1 Tap. */ + ivec2 texel = ivec2(center_texel) + ivec2(greaterThan(inter_texel, vec2(0.5))); + texel = clamp(texel, ivec2(0), textureSize(color_tx, 0).xy - 1); + return texelFetch(color_tx, texel, 0); +#endif +} + +/* Return history clipping bounding box in YCoCg color space. */ +void film_combined_neighbor_boundbox(ivec2 texel, out vec4 min_c, out vec4 max_c) +{ + /* Plus (+) shape offsets. */ + const ivec2 plus_offsets[5] = ivec2[5](ivec2(0, 0), /* Center */ + ivec2(-1, 0), + ivec2(0, -1), + ivec2(1, 0), + ivec2(0, 1)); +#if 0 + /** + * Compute Variance of neighborhood as described in: + * "An Excursion in Temporal Supersampling" by Marco Salvi at GDC 2016. + * and: + * "A Survey of Temporal Antialiasing Techniques" by Yang et al. + */ + + /* First 2 moments. */ + vec4 mu1 = vec4(0), mu2 = vec4(0); + for (int i = 0; i < 5; i++) { + vec4 color = film_texelfetch_as_YCoCg_opacity(combined_tx, texel + plus_offsets[i]); + mu1 += color; + mu2 += sqr(color); + } + mu1 *= (1.0 / 5.0); + mu2 *= (1.0 / 5.0); + + /* Extent scaling. Range [0.75..1.25]. + * Balance between more flickering (0.75) or more ghosting (1.25). */ + const float gamma = 1.25; + /* Standard deviation. */ + vec4 sigma = sqrt(abs(mu2 - sqr(mu1))); + /* eq. 6 in "A Survey of Temporal Antialiasing Techniques". */ + min_c = mu1 - gamma * sigma; + max_c = mu1 + gamma * sigma; +#else + /** + * Simple bounding box calculation in YCoCg as described in: + * "High Quality Temporal Supersampling" by Brian Karis at Siggraph 2014 + */ + min_c = vec4(1e16); + max_c = vec4(-1e16); + for (int i = 0; i < 5; i++) { + vec4 color = film_texelfetch_as_YCoCg_opacity(combined_tx, texel + plus_offsets[i]); + min_c = min(min_c, color); + max_c = max(max_c, color); + } + /* (Slide 32) Simple clamp to min/max of 8 neighbors results in 3x3 box artifacts. + * Round bbox shape by averaging 2 different min/max from 2 different neighborhood. */ + vec4 min_c_3x3 = min_c; + vec4 max_c_3x3 = max_c; + const ivec2 corners[4] = ivec2[4](ivec2(-1, -1), ivec2(1, -1), ivec2(-1, 1), ivec2(1, 1)); + for (int i = 0; i < 4; i++) { + vec4 color = film_texelfetch_as_YCoCg_opacity(combined_tx, texel + corners[i]); + min_c_3x3 = min(min_c_3x3, color); + max_c_3x3 = max(max_c_3x3, color); + } + min_c = (min_c + min_c_3x3) * 0.5; + max_c = (max_c + max_c_3x3) * 0.5; +#endif +} + +/* 1D equivalent of line_aabb_clipping_dist(). */ +float film_aabb_clipping_dist_alpha(float origin, float direction, float aabb_min, float aabb_max) +{ + if (abs(direction) < 1e-5) { + return 0.0; + } + float nearest_plane = (direction > 0.0) ? aabb_min : aabb_max; + return (nearest_plane - origin) / direction; +} + +/* Modulate the history color to avoid ghosting artifact. */ +vec4 film_amend_combined_history( + vec4 min_color, vec4 max_color, vec4 color_history, vec4 src_color, ivec2 src_texel) +{ + /* Clip instead of clamping to avoid color accumulating in the AABB corners. */ + vec4 clip_dir = src_color - color_history; + + float t = line_aabb_clipping_dist(color_history.rgb, clip_dir.rgb, min_color.rgb, max_color.rgb); + color_history.rgb += clip_dir.rgb * saturate(t); + + /* Clip alpha on its own to avoid interference with other channels. */ + float t_a = film_aabb_clipping_dist_alpha(color_history.a, clip_dir.a, min_color.a, max_color.a); + color_history.a += clip_dir.a * saturate(t_a); + + return color_history; +} + +float film_history_blend_factor(float velocity, + vec2 texel, + float luma_min, + float luma_max, + float luma_incoming, + float luma_history) +{ + /* 5% of incoming color by default. */ + float blend = 0.05; + /* Blend less history if the pixel has substantial velocity. */ + blend = mix(blend, 0.20, saturate(velocity * 0.02)); + /** + * "High Quality Temporal Supersampling" by Brian Karis at Siggraph 2014 (Slide 43) + * Bias towards history if incoming pixel is near clamping. Reduces flicker. + */ + float distance_to_luma_clip = min_v2(vec2(luma_history - luma_min, luma_max - luma_history)); + /* Divide by bbox size to get a factor. 2 factor to compensate the line above. */ + distance_to_luma_clip *= 2.0 * safe_rcp(luma_max - luma_min); + /* Linearly blend when history gets below to 25% of the bbox size. */ + blend *= saturate(distance_to_luma_clip * 4.0 + 0.1); + /* Discard out of view history. */ + if (any(lessThan(texel, vec2(0))) || any(greaterThanEqual(texel, film_buf.extent))) { + blend = 1.0; + } + /* Discard history if invalid. */ + if (film_buf.use_history == false) { + blend = 1.0; + } + return blend; +} + +/* Returns resolved final color. */ +void film_store_combined( + FilmSample dst, ivec2 src_texel, vec4 color, float color_weight, inout vec4 display) +{ + if (film_buf.combined_id == -1) { + return; + } + + vec4 color_src, color_dst; + float weight_src, weight_dst; + + /* Undo the weighting to get final spatialy-filtered color. */ + color_src = color / color_weight; + + if (film_buf.use_reprojection) { + /* Interactive accumulation. Do reprojection and Temporal Anti-Aliasing. */ + + /* Reproject by finding where this pixel was in the previous frame. */ + vec2 motion = film_pixel_history_motion_vector(src_texel); + vec2 history_texel = vec2(dst.texel) + motion; + + float velocity = length(motion); + + /* Load weight if it is not uniform across the whole buffer (i.e: upsampling, panoramic). */ + // dst.weight = film_weight_load(texel_combined); + + color_dst = film_sample_catmull_rom(in_combined_tx, history_texel); + color_dst.rgb = colorspace_YCoCg_from_scene_linear(color_dst.rgb); + + /* Get local color bounding box of source neighborhood. */ + vec4 min_color, max_color; + film_combined_neighbor_boundbox(src_texel, min_color, max_color); + + float blend = film_history_blend_factor( + velocity, history_texel, min_color.x, max_color.x, color_src.x, color_dst.x); + + color_dst = film_amend_combined_history(min_color, max_color, color_dst, color_src, src_texel); + + /* Luma weighted blend to avoid flickering. */ + weight_dst = film_luma_weight(color_dst.x) * (1.0 - blend); + weight_src = film_luma_weight(color_src.x) * (blend); + } + else { + /* Everything is static. Use render accumulation. */ + color_dst = texelFetch(in_combined_tx, dst.texel, 0); + color_dst.rgb = colorspace_YCoCg_from_scene_linear(color_dst.rgb); + + /* Luma weighted blend to avoid flickering. */ + weight_dst = film_luma_weight(color_dst.x) * dst.weight; + weight_src = color_weight; + } + /* Weighted blend. */ + color = color_dst * weight_dst + color_src * weight_src; + color /= weight_src + weight_dst; + + color.rgb = colorspace_scene_linear_from_YCoCg(color.rgb); + + /* Fix alpha not accumulating to 1 because of float imprecision. */ + if (color.a > 0.995) { + color.a = 1.0; + } + + /* Filter NaNs. */ + if (any(isnan(color))) { + color = vec4(0.0, 0.0, 0.0, 1.0); + } + + if (film_buf.display_id == -1) { + display = color; + } + imageStore(out_combined_img, dst.texel, color); +} + +void film_store_color(FilmSample dst, int pass_id, vec4 color, inout vec4 display) +{ + if (pass_id == -1) { + return; + } + + vec4 data_film = imageLoad(color_accum_img, ivec3(dst.texel, pass_id)); + + color = (data_film * dst.weight + color) * dst.weight_sum_inv; + + /* Filter NaNs. */ + if (any(isnan(color))) { + color = vec4(0.0, 0.0, 0.0, 1.0); + } + + if (film_buf.display_id == pass_id) { + display = color; + } + imageStore(color_accum_img, ivec3(dst.texel, pass_id), color); +} + +void film_store_value(FilmSample dst, int pass_id, float value, inout vec4 display) +{ + if (pass_id == -1) { + return; + } + + float data_film = imageLoad(value_accum_img, ivec3(dst.texel, pass_id)).x; + + value = (data_film * dst.weight + value) * dst.weight_sum_inv; + + /* Filter NaNs. */ + if (isnan(value)) { + value = 0.0; + } + + if (film_buf.display_id == pass_id) { + display = vec4(value, value, value, 1.0); + } + imageStore(value_accum_img, ivec3(dst.texel, pass_id), vec4(value)); +} + +/* Nearest sample variant. Always stores the data. */ +void film_store_data(ivec2 texel_film, int pass_id, vec4 data_sample, inout vec4 display) +{ + if (pass_id == -1) { + return; + } + + if (film_buf.display_id == pass_id) { + display = data_sample; + } + imageStore(color_accum_img, ivec3(texel_film, pass_id), data_sample); +} + +void film_store_depth(ivec2 texel_film, float value, out float out_depth) +{ + if (film_buf.depth_id == -1) { + return; + } + + out_depth = film_depth_convert_to_scene(value); + + imageStore(depth_img, texel_film, vec4(out_depth)); +} + +void film_store_distance(ivec2 texel, float value) +{ + imageStore(out_weight_img, ivec3(texel, FILM_WEIGHT_LAYER_DISTANCE), vec4(value)); +} + +void film_store_weight(ivec2 texel, float value) +{ + imageStore(out_weight_img, ivec3(texel, FILM_WEIGHT_LAYER_ACCUMULATION), vec4(value)); +} + +float film_display_depth_ammend(ivec2 texel, float depth) +{ + /* This effectively offsets the depth of the whole 2x2 region to the lowest value of the region + * twice. One for X and one for Y direction. */ + /* TODO(fclem): This could be improved as it gives flickering result at depth discontinuity. + * But this is the quickest stable result I could come with for now. */ +#ifdef GPU_FRAGMENT_SHADER + depth += fwidth(depth); +#endif + /* Small offset to avoid depth test lessEqual failing because of all the conversions loss. */ + depth += 2.4e-7 * 4.0; + return saturate(depth); +} + +/** \} */ + +/** NOTE: out_depth is scene linear depth from the camera origin. */ +void film_process_data(ivec2 texel_film, out vec4 out_color, out float out_depth) +{ + out_color = vec4(0.0); + out_depth = 0.0; + + float weight_accum = film_weight_accumulation(texel_film); + float film_weight = film_weight_load(texel_film); + float weight_sum = film_weight + weight_accum; + film_store_weight(texel_film, weight_sum); + + FilmSample dst; + dst.texel = texel_film; + dst.weight = film_weight; + dst.weight_sum_inv = 1.0 / weight_sum; + + /* NOTE: We split the accumulations into separate loops to avoid using too much registers and + * maximize occupancy. */ + + if (film_buf.combined_id != -1) { + /* NOTE: Do weight accumulation again since we use custom weights. */ + float weight_accum = 0.0; + vec4 combined_accum = vec4(0.0); + + FilmSample src; + for (int i = film_buf.samples_len - 1; i >= 0; i--) { + src = film_sample_get(i, texel_film); + film_sample_accum_combined(src, combined_accum, weight_accum); + } + /* NOTE: src.texel is center texel in incoming data buffer. */ + film_store_combined(dst, src.texel, combined_accum, weight_accum, out_color); + } + + if (film_buf.has_data) { + float film_distance = film_distance_load(texel_film); + + /* Get sample closest to target texel. It is always sample 0. */ + FilmSample film_sample = film_sample_get(0, texel_film); + + if (film_buf.use_reprojection || film_sample.weight < film_distance) { + vec4 normal = texelFetch(normal_tx, film_sample.texel, 0); + float depth = texelFetch(depth_tx, film_sample.texel, 0).x; + vec4 vector = velocity_resolve(vector_tx, film_sample.texel, depth); + /* Transform to pixel space. */ + vector *= vec4(film_buf.render_extent, -film_buf.render_extent); + + film_store_depth(texel_film, depth, out_depth); + film_store_data(texel_film, film_buf.normal_id, normal, out_color); + film_store_data(texel_film, film_buf.vector_id, vector, out_color); + film_store_distance(texel_film, film_sample.weight); + } + else { + out_depth = imageLoad(depth_img, texel_film).r; + } + } + + if (film_buf.any_render_pass_1) { + vec4 diffuse_light_accum = vec4(0.0); + vec4 specular_light_accum = vec4(0.0); + vec4 volume_light_accum = vec4(0.0); + vec4 emission_accum = vec4(0.0); + + for (int i = 0; i < film_buf.samples_len; i++) { + FilmSample src = film_sample_get(i, texel_film); + film_sample_accum(src, + film_buf.diffuse_light_id, + RENDER_PASS_LAYER_DIFFUSE_LIGHT, + light_tx, + diffuse_light_accum); + film_sample_accum(src, + film_buf.specular_light_id, + RENDER_PASS_LAYER_SPECULAR_LIGHT, + light_tx, + specular_light_accum); + film_sample_accum(src, film_buf.volume_light_id, volume_light_tx, volume_light_accum); + film_sample_accum(src, film_buf.emission_id, emission_tx, emission_accum); + } + film_store_color(dst, film_buf.diffuse_light_id, diffuse_light_accum, out_color); + film_store_color(dst, film_buf.specular_light_id, specular_light_accum, out_color); + film_store_color(dst, film_buf.volume_light_id, volume_light_accum, out_color); + film_store_color(dst, film_buf.emission_id, emission_accum, out_color); + } + + if (film_buf.any_render_pass_2) { + vec4 diffuse_color_accum = vec4(0.0); + vec4 specular_color_accum = vec4(0.0); + vec4 environment_accum = vec4(0.0); + float mist_accum = 0.0; + float shadow_accum = 0.0; + float ao_accum = 0.0; + + for (int i = 0; i < film_buf.samples_len; i++) { + FilmSample src = film_sample_get(i, texel_film); + film_sample_accum(src, film_buf.diffuse_color_id, diffuse_color_tx, diffuse_color_accum); + film_sample_accum(src, film_buf.specular_color_id, specular_color_tx, specular_color_accum); + film_sample_accum(src, film_buf.environment_id, environment_tx, environment_accum); + film_sample_accum(src, film_buf.shadow_id, shadow_tx, shadow_accum); + film_sample_accum(src, film_buf.ambient_occlusion_id, ambient_occlusion_tx, ao_accum); + film_sample_accum_mist(src, mist_accum); + } + film_store_color(dst, film_buf.diffuse_color_id, diffuse_color_accum, out_color); + film_store_color(dst, film_buf.specular_color_id, specular_color_accum, out_color); + film_store_color(dst, film_buf.environment_id, environment_accum, out_color); + film_store_value(dst, film_buf.shadow_id, shadow_accum, out_color); + film_store_value(dst, film_buf.ambient_occlusion_id, ao_accum, out_color); + film_store_value(dst, film_buf.mist_id, mist_accum, out_color); + } + + for (int aov = 0; aov < film_buf.aov_color_len; aov++) { + vec4 aov_accum = vec4(0.0); + + for (int i = 0; i < film_buf.samples_len; i++) { + FilmSample src = film_sample_get(i, texel_film); + film_sample_accum(src, aov, aov_color_tx, aov_accum); + } + film_store_color(dst, film_buf.aov_color_id + aov, aov_accum, out_color); + } + + for (int aov = 0; aov < film_buf.aov_value_len; aov++) { + float aov_accum = 0.0; + + for (int i = 0; i < film_buf.samples_len; i++) { + FilmSample src = film_sample_get(i, texel_film); + film_sample_accum(src, aov, aov_value_tx, aov_accum); + } + film_store_value(dst, film_buf.aov_value_id + aov, aov_accum, out_color); + } +} |