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Differential D16243 Diff 58431 source/blender/draw/engines/eevee/shaders/effect_velocity_tile_frag.glsl

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source/blender/draw/engines/eevee/shaders/effect_velocity_tile_frag.glsl

/** /**
* Shaders that down-sample velocity buffer, * Shaders that down-sample velocity buffer,
* *
* Based on: * Based on:
* A Fast and Stable Feature-Aware Motion Blur Filter * A Fast and Stable Feature-Aware Motion Blur Filter
* by Jean-Philippe Guertin, Morgan McGuire, Derek Nowrouzezahrai * by Jean-Philippe Guertin, Morgan McGuire, Derek Nowrouzezahrai
* *
* Adapted from G3D Innovation Engine implementation. * Adapted from G3D Innovation Engine implementation.
*/ */
uniform sampler2D velocityBuffer;
uniform vec2 viewportSize;
uniform vec2 viewportSizeInv;
uniform ivec2 velocityBufferSize;
out vec4 tileMaxVelocity;
vec4 sample_velocity(ivec2 texel) vec4 sample_velocity(ivec2 texel)
{ {
texel = clamp(texel, ivec2(0), velocityBufferSize - 1); texel = clamp(texel, ivec2(0), velocityBufferSize - 1);
vec4 data = texelFetch(velocityBuffer, texel, 0); vec4 data = texelFetch(velocityBuffer, texel, 0);
/* Decode data. */ /* Decode data. */
return (data * 2.0 - 1.0) * viewportSize.xyxy; return (data * 2.0 - 1.0) * viewportSize.xyxy;
} }
vec4 encode_velocity(vec4 velocity) vec4 encode_velocity(vec4 velocity)
{ {
return velocity * viewportSizeInv.xyxy * 0.5 + 0.5; return velocity * viewportSizeInv.xyxy * 0.5 + 0.5;
} }
#ifdef TILE_GATHER #ifdef TILE_GATHER
uniform ivec2 gatherStep;
void main() void main()
{ {
vec4 max_motion = vec4(0.0); vec4 max_motion = vec4(0.0);
float max_motion_len_sqr_prev = 0.0; float max_motion_len_sqr_prev = 0.0;
float max_motion_len_sqr_next = 0.0; float max_motion_len_sqr_next = 0.0;
ivec2 texel = ivec2(gl_FragCoord.xy); ivec2 texel = ivec2(gl_FragCoord.xy);
texel = texel * gatherStep.yx + texel * EEVEE_VELOCITY_TILE_SIZE * gatherStep; texel = texel * gatherStep.yx + texel * EEVEE_VELOCITY_TILE_SIZE * gatherStep;
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