diff options
Diffstat (limited to 'source/blender/draw/engines/eevee_next/eevee_shader_shared.hh')
| -rw-r--r-- | source/blender/draw/engines/eevee_next/eevee_shader_shared.hh | 192 |
1 files changed, 187 insertions, 5 deletions
diff --git a/source/blender/draw/engines/eevee_next/eevee_shader_shared.hh b/source/blender/draw/engines/eevee_next/eevee_shader_shared.hh index 1261c855a82..62eb5a2b965 100644 --- a/source/blender/draw/engines/eevee_next/eevee_shader_shared.hh +++ b/source/blender/draw/engines/eevee_next/eevee_shader_shared.hh @@ -12,7 +12,7 @@ # include "BLI_memory_utils.hh" # include "DRW_gpu_wrapper.hh" -// # include "eevee_defines.hh" +# include "eevee_defines.hh" # include "GPU_shader_shared.h" @@ -28,6 +28,63 @@ using draw::TextureFromPool; #define UBO_MIN_MAX_SUPPORTED_SIZE 1 << 14 /* -------------------------------------------------------------------- */ +/** \name Sampling + * \{ */ + +enum eSamplingDimension : uint32_t { + SAMPLING_FILTER_U = 0u, + SAMPLING_FILTER_V = 1u, + SAMPLING_LENS_U = 2u, + SAMPLING_LENS_V = 3u, + SAMPLING_TIME = 4u, + SAMPLING_SHADOW_U = 5u, + SAMPLING_SHADOW_V = 6u, + SAMPLING_SHADOW_W = 7u, + SAMPLING_SHADOW_X = 8u, + SAMPLING_SHADOW_Y = 9u, + SAMPLING_CLOSURE = 10u, + SAMPLING_LIGHTPROBE = 11u, + SAMPLING_TRANSPARENCY = 12u, + SAMPLING_SSS_U = 13u, + SAMPLING_SSS_V = 14u, + SAMPLING_RAYTRACE_U = 15u, + SAMPLING_RAYTRACE_V = 16u, + SAMPLING_RAYTRACE_W = 17u, + SAMPLING_RAYTRACE_X = 18u +}; + +/** + * IMPORTANT: Make sure the array can contain all sampling dimensions. + * Also note that it needs to be multiple of 4. + */ +#define SAMPLING_DIMENSION_COUNT 20 + +/* NOTE(@fclem): Needs to be used in #StorageBuffer because of arrays of scalar. */ +struct SamplingData { + /** Array containing random values from Low Discrepancy Sequence in [0..1) range. */ + float dimensions[SAMPLING_DIMENSION_COUNT]; +}; +BLI_STATIC_ASSERT_ALIGN(SamplingData, 16) + +/* Returns total sample count in a web pattern of the given size. */ +static inline int sampling_web_sample_count_get(int web_density, int ring_count) +{ + return ((ring_count * ring_count + ring_count) / 2) * web_density + 1; +} + +/* Returns lowest possible ring count that contains at least sample_count samples. */ +static inline int sampling_web_ring_count_get(int web_density, int sample_count) +{ + /* Inversion of web_sample_count_get(). */ + float x = 2.0f * (float(sample_count) - 1.0f) / float(web_density); + /* Solving polynomial. We only search positive solution. */ + float discriminant = 1.0f + 4.0f * x; + return int(ceilf(0.5f * (sqrtf(discriminant) - 1.0f))); +} + +/** \} */ + +/* -------------------------------------------------------------------- */ /** \name Camera * \{ */ @@ -65,15 +122,137 @@ struct CameraData { /** Clipping distances. */ float clip_near; float clip_far; - /** Film pixel filter radius. */ - float filter_size; eCameraType type; + + int _pad0; }; BLI_STATIC_ASSERT_ALIGN(CameraData, 16) /** \} */ /* -------------------------------------------------------------------- */ +/** \name Film + * \{ */ + +#define FILM_PRECOMP_SAMPLE_MAX 16 + +struct FilmSample { + int2 texel; + float weight; + /** Used for accumulation. */ + float weight_sum_inv; +}; +BLI_STATIC_ASSERT_ALIGN(FilmSample, 16) + +struct FilmData { + /** Size of the film in pixels. */ + int2 extent; + /** Offset of the film in the full-res frame, in pixels. */ + int2 offset; + /** Sub-pixel offset applied to the window matrix. + * NOTE: In final film pixel unit. + * NOTE: Positive values makes the view translate in the negative axes direction. + * NOTE: The origin is the center of the lower left film pixel of the area covered by a render + * pixel if using scaled resolution rendering. + */ + float2 subpixel_offset; + /** Is true if history is valid and can be sampled. Bypass history to resets accumulation. */ + bool1 use_history; + /** Is true if combined buffer is valid and can be re-projected to reduce variance. */ + bool1 use_reprojection; + /** Is true if accumulation of non-filtered passes is needed. */ + bool1 has_data; + /** Is true if accumulation of filtered passes is needed. */ + bool1 any_render_pass_1; + bool1 any_render_pass_2; + int _pad0, _pad1; + /** Output counts per type. */ + int color_len, value_len; + /** Index in color_accum_img or value_accum_img of each pass. -1 if pass is not enabled. */ + int mist_id; + int normal_id; + int vector_id; + int diffuse_light_id; + int diffuse_color_id; + int specular_light_id; + int specular_color_id; + int volume_light_id; + int emission_id; + int environment_id; + int shadow_id; + int ambient_occlusion_id; + /** Not indexed but still not -1 if enabled. */ + int depth_id; + int combined_id; + /** Id of the render-pass to be displayed. -1 for combined. */ + int display_id; + /** True if the render-pass to be displayed is from the value accum buffer. */ + bool1 display_is_value; + /** True if we bypass the accumulation and directly output the accumulation buffer. */ + bool1 display_only; + /** Start of AOVs and number of aov. */ + int aov_color_id, aov_color_len; + int aov_value_id, aov_value_len; + /** Settings to render mist pass */ + float mist_scale, mist_bias, mist_exponent; + /** Scene exposure used for better noise reduction. */ + float exposure; + /** Scaling factor for scaled resolution rendering. */ + int scaling_factor; + /** Film pixel filter radius. */ + float filter_size; + /** Precomputed samples. First in the table is the closest one. The rest is unordered. */ + int samples_len; + /** Sum of the weights of all samples in the sample table. */ + float samples_weight_total; + FilmSample samples[FILM_PRECOMP_SAMPLE_MAX]; +}; +BLI_STATIC_ASSERT_ALIGN(FilmData, 16) + +static inline float film_filter_weight(float filter_size, float sample_distance_sqr) +{ +#if 1 /* Faster */ + /* Gaussian fitted to Blackman-Harris. */ + float r = sample_distance_sqr / (filter_size * filter_size); + const float sigma = 0.284; + const float fac = -0.5 / (sigma * sigma); + float weight = expf(fac * r); +#else + /* Blackman-Harris filter. */ + float r = M_2PI * saturate(0.5 + sqrtf(sample_distance_sqr) / (2.0 * filter_size)); + float weight = 0.35875 - 0.48829 * cosf(r) + 0.14128 * cosf(2.0 * r) - 0.01168 * cosf(3.0 * r); +#endif + return weight; +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Arbitrary Output Variables + * \{ */ + +/* Theoretical max is 128 as we are using texture array and VRAM usage. + * However, the output_aov() function perform a linear search inside all the hashes. + * If we find a way to avoid this we could bump this number up. */ +#define AOV_MAX 16 + +/* NOTE(@fclem): Needs to be used in #StorageBuffer because of arrays of scalar. */ +struct AOVsInfoData { + uint hash_value[AOV_MAX]; + uint hash_color[AOV_MAX]; + /* Length of used data. */ + uint color_len; + uint value_len; + /** Id of the AOV to be displayed (from the start of the AOV array). -1 for combined. */ + int display_id; + /** True if the AOV to be displayed is from the value accum buffer. */ + bool1 display_is_value; +}; +BLI_STATIC_ASSERT_ALIGN(AOVsInfoData, 16) + +/** \} */ + +/* -------------------------------------------------------------------- */ /** \name VelocityModule * \{ */ @@ -126,7 +305,7 @@ BLI_STATIC_ASSERT_ALIGN(VelocityGeometryIndex, 16) * \{ */ enum eClosureBits : uint32_t { - /** NOTE: Theses are used as stencil bits. So we are limited to 8bits. */ + /** NOTE: These are used as stencil bits. So we are limited to 8bits. */ CLOSURE_DIFFUSE = (1u << 0u), CLOSURE_SSS = (1u << 1u), CLOSURE_REFLECTION = (1u << 2u), @@ -178,10 +357,13 @@ float4 utility_tx_sample(sampler2DArray util_tx, float2 uv, float layer) #ifdef __cplusplus +using AOVsInfoDataBuf = draw::StorageBuffer<AOVsInfoData>; using CameraDataBuf = draw::UniformBuffer<CameraData>; +using FilmDataBuf = draw::UniformBuffer<FilmData>; +using SamplingDataBuf = draw::StorageBuffer<SamplingData>; +using VelocityGeometryBuf = draw::StorageArrayBuffer<float4, 16, true>; using VelocityIndexBuf = draw::StorageArrayBuffer<VelocityIndex, 16>; using VelocityObjectBuf = draw::StorageArrayBuffer<float4x4, 16>; -using VelocityGeometryBuf = draw::StorageArrayBuffer<float4, 16, true>; } // namespace blender::eevee #endif |