561 lines
77 KiB
JavaScript
561 lines
77 KiB
JavaScript
|
/**
|
||
|
|
* The blending weight calculation filter for {@link foundry.canvas.SMAAFilter}.
|
||
|
|
*/
|
||
|
|
export default class SMAABWeightCalculationFilter extends PIXI.Filter {
|
||
|
|
/**
|
||
|
|
* @param {SMAAFilterConfig} config
|
||
|
|
*/
|
||
|
|
constructor(config) {
|
||
|
|
super(generateVertexSource(config), generateFragmentSource(config), {areaTex, searchTex});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* -------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The fragment shader source of {@link SMAABWeightCalculationFilter}.
|
||
|
|
* @param {SMAAFilterConfig} config
|
||
|
|
* @returns {string}
|
||
|
|
*/
|
||
|
|
function generateVertexSource(config) {
|
||
|
|
return `\
|
||
|
|
#define mad(a, b, c) (a * b + c)
|
||
|
|
|
||
|
|
#define SMAA_MAX_SEARCH_STEPS ${config.maxSearchSteps}
|
||
|
|
|
||
|
|
attribute vec2 aVertexPosition;
|
||
|
|
|
||
|
|
uniform mat3 projectionMatrix;
|
||
|
|
uniform vec4 inputSize;
|
||
|
|
uniform vec4 inputPixel;
|
||
|
|
uniform vec4 outputFrame;
|
||
|
|
|
||
|
|
#define resolution (inputPixel.xy)
|
||
|
|
#define SMAA_RT_METRICS (inputPixel.zwxy)
|
||
|
|
|
||
|
|
varying vec2 vTexCoord0;
|
||
|
|
varying vec2 vPixCoord;
|
||
|
|
varying vec4 vOffset[3];
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
vTexCoord0 = aVertexPosition * (outputFrame.zw * inputSize.zw);
|
||
|
|
|
||
|
|
vPixCoord = vTexCoord0 * SMAA_RT_METRICS.zw;
|
||
|
|
|
||
|
|
// We will use these offsets for the searches later on (see @PSEUDO_GATHER4):
|
||
|
|
vOffset[0] = mad(SMAA_RT_METRICS.xyxy, vec4(-0.25, -0.125, 1.25, -0.125), vTexCoord0.xyxy);
|
||
|
|
vOffset[1] = mad(SMAA_RT_METRICS.xyxy, vec4(-0.125, -0.25, -0.125, 1.25), vTexCoord0.xyxy);
|
||
|
|
|
||
|
|
// And these for the searches, they indicate the ends of the loops:
|
||
|
|
vOffset[2] = mad(
|
||
|
|
SMAA_RT_METRICS.xxyy,
|
||
|
|
vec4(-2.0, 2.0, -2.0, 2.0) * float(SMAA_MAX_SEARCH_STEPS),
|
||
|
|
vec4(vOffset[0].xz, vOffset[1].yw)
|
||
|
|
);
|
||
|
|
|
||
|
|
vec3 position = vec3(aVertexPosition * max(outputFrame.zw, vec2(0.0)) + outputFrame.xy, 1.0);
|
||
|
|
gl_Position = vec4((projectionMatrix * position).xy, 0.0, 1.0);
|
||
|
|
}
|
||
|
|
`;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* -------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The fragment shader source of {@link SMAABWeightCalculationFilter}.
|
||
|
|
* @param {SMAAFilterConfig} config
|
||
|
|
* @returns {string}
|
||
|
|
*/
|
||
|
|
function generateFragmentSource(config) {
|
||
|
|
return `\
|
||
|
|
precision highp float;
|
||
|
|
precision highp int;
|
||
|
|
|
||
|
|
#define SMAA_THRESHOLD ${config.threshold.toFixed(8)}
|
||
|
|
#define SMAA_MAX_SEARCH_STEPS ${config.maxSearchSteps}
|
||
|
|
#define SMAA_MAX_SEARCH_STEPS_DIAG ${config.maxSearchStepsDiag}
|
||
|
|
#define SMAA_CORNER_ROUNDING ${config.cornerRounding}
|
||
|
|
${config.disableDiagDetection ? "#define SMAA_DISABLE_DIAG_DETECTION" : ""}
|
||
|
|
${config.disableCornerDetection ? "#define SMAA_DISABLE_CORNER_DETECTION" : ""}
|
||
|
|
|
||
|
|
// Non-Configurable Defines
|
||
|
|
#define SMAA_AREATEX_MAX_DISTANCE 16
|
||
|
|
#define SMAA_AREATEX_MAX_DISTANCE_DIAG 20
|
||
|
|
#define SMAA_AREATEX_PIXEL_SIZE (1.0 / vec2(160.0, 560.0))
|
||
|
|
#define SMAA_AREATEX_SUBTEX_SIZE (1.0 / 7.0)
|
||
|
|
#define SMAA_SEARCHTEX_SIZE vec2(66.0, 33.0)
|
||
|
|
#define SMAA_SEARCHTEX_PACKED_SIZE vec2(64.0, 16.0)
|
||
|
|
#define SMAA_CORNER_ROUNDING_NORM (float(SMAA_CORNER_ROUNDING) / 100.0)
|
||
|
|
|
||
|
|
// Texture Access Defines
|
||
|
|
#ifndef SMAA_AREATEX_SELECT
|
||
|
|
#define SMAA_AREATEX_SELECT(sample) sample.rg
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef SMAA_SEARCHTEX_SELECT
|
||
|
|
#define SMAA_SEARCHTEX_SELECT(sample) sample.r
|
||
|
|
#endif
|
||
|
|
|
||
|
|
uniform sampler2D uSampler; // edgesTex
|
||
|
|
uniform sampler2D areaTex;
|
||
|
|
uniform sampler2D searchTex;
|
||
|
|
uniform vec4 inputPixel;
|
||
|
|
|
||
|
|
#define edgesTex uSampler
|
||
|
|
#define resolution (inputPixel.xy)
|
||
|
|
#define SMAA_RT_METRICS (inputPixel.zwxy)
|
||
|
|
|
||
|
|
varying vec2 vTexCoord0;
|
||
|
|
varying vec4 vOffset[3];
|
||
|
|
varying vec2 vPixCoord;
|
||
|
|
|
||
|
|
#define mad(a, b, c) (a * b + c)
|
||
|
|
#define saturate(a) clamp(a, 0.0, 1.0)
|
||
|
|
#define round(v) floor(v + 0.5)
|
||
|
|
#define SMAASampleLevelZeroOffset(tex, coord, offset) texture2D(tex, coord + offset * SMAA_RT_METRICS.xy)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Conditional move:
|
||
|
|
*/
|
||
|
|
void SMAAMovc(bvec2 cond, inout vec2 variable, vec2 value) {
|
||
|
|
if (cond.x) variable.x = value.x;
|
||
|
|
if (cond.y) variable.y = value.y;
|
||
|
|
}
|
||
|
|
|
||
|
|
void SMAAMovc(bvec4 cond, inout vec4 variable, vec4 value) {
|
||
|
|
SMAAMovc(cond.xy, variable.xy, value.xy);
|
||
|
|
SMAAMovc(cond.zw, variable.zw, value.zw);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Allows to decode two binary values from a bilinear-filtered access.
|
||
|
|
*/
|
||
|
|
vec2 SMAADecodeDiagBilinearAccess(vec2 e) {
|
||
|
|
// Bilinear access for fetching 'e' have a 0.25 offset, and we are
|
||
|
|
// interested in the R and G edges:
|
||
|
|
//
|
||
|
|
// +---G---+-------+
|
||
|
|
// | x o R x |
|
||
|
|
// +-------+-------+
|
||
|
|
//
|
||
|
|
// Then, if one of these edge is enabled:
|
||
|
|
// Red: (0.75 * X + 0.25 * 1) => 0.25 or 1.0
|
||
|
|
// Green: (0.75 * 1 + 0.25 * X) => 0.75 or 1.0
|
||
|
|
//
|
||
|
|
// This function will unpack the values (mad + mul + round):
|
||
|
|
// wolframalpha.com: round(x * abs(5 * x - 5 * 0.75)) plot 0 to 1
|
||
|
|
e.r = e.r * abs(5.0 * e.r - 5.0 * 0.75);
|
||
|
|
return round(e);
|
||
|
|
}
|
||
|
|
|
||
|
|
vec4 SMAADecodeDiagBilinearAccess(vec4 e) {
|
||
|
|
e.rb = e.rb * abs(5.0 * e.rb - 5.0 * 0.75);
|
||
|
|
return round(e);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* These functions allows to perform diagonal pattern searches.
|
||
|
|
*/
|
||
|
|
vec2 SMAASearchDiag1(sampler2D edgesTex, vec2 texcoord, vec2 dir, out vec2 e) {
|
||
|
|
vec4 coord = vec4(texcoord, -1.0, 1.0);
|
||
|
|
vec3 t = vec3(SMAA_RT_METRICS.xy, 1.0);
|
||
|
|
|
||
|
|
for (int i = 0; i < SMAA_MAX_SEARCH_STEPS; i++) {
|
||
|
|
if (!(coord.z < float(SMAA_MAX_SEARCH_STEPS_DIAG - 1) && coord.w > 0.9)) break;
|
||
|
|
coord.xyz = mad(t, vec3(dir, 1.0), coord.xyz);
|
||
|
|
e = texture2D(edgesTex, coord.xy).rg; // LinearSampler
|
||
|
|
coord.w = dot(e, vec2(0.5, 0.5));
|
||
|
|
}
|
||
|
|
return coord.zw;
|
||
|
|
}
|
||
|
|
|
||
|
|
vec2 SMAASearchDiag2(sampler2D edgesTex, vec2 texcoord, vec2 dir, out vec2 e) {
|
||
|
|
vec4 coord = vec4(texcoord, -1.0, 1.0);
|
||
|
|
coord.x += 0.25 * SMAA_RT_METRICS.x; // See @SearchDiag2Optimization
|
||
|
|
vec3 t = vec3(SMAA_RT_METRICS.xy, 1.0);
|
||
|
|
|
||
|
|
for (int i = 0; i < SMAA_MAX_SEARCH_STEPS; i++) {
|
||
|
|
if (!(coord.z < float(SMAA_MAX_SEARCH_STEPS_DIAG - 1) && coord.w > 0.9)) break;
|
||
|
|
coord.xyz = mad(t, vec3(dir, 1.0), coord.xyz);
|
||
|
|
|
||
|
|
// @SearchDiag2Optimization
|
||
|
|
// Fetch both edges at once using bilinear filtering:
|
||
|
|
e = texture2D(edgesTex, coord.xy).rg; // LinearSampler
|
||
|
|
e = SMAADecodeDiagBilinearAccess(e);
|
||
|
|
|
||
|
|
// Non-optimized version:
|
||
|
|
// e.g = texture2D(edgesTex, coord.xy).g; // LinearSampler
|
||
|
|
// e.r = SMAASampleLevelZeroOffset(edgesTex, coord.xy, vec2(1, 0)).r;
|
||
|
|
|
||
|
|
coord.w = dot(e, vec2(0.5, 0.5));
|
||
|
|
}
|
||
|
|
return coord.zw;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Similar to SMAAArea, this calculates the area corresponding to a certain
|
||
|
|
* diagonal distance and crossing edges 'e'.
|
||
|
|
*/
|
||
|
|
vec2 SMAAAreaDiag(sampler2D areaTex, vec2 dist, vec2 e, float offset) {
|
||
|
|
vec2 texcoord = mad(vec2(SMAA_AREATEX_MAX_DISTANCE_DIAG, SMAA_AREATEX_MAX_DISTANCE_DIAG), e, dist);
|
||
|
|
|
||
|
|
// We do a scale and bias for mapping to texel space:
|
||
|
|
texcoord = mad(SMAA_AREATEX_PIXEL_SIZE, texcoord, 0.5 * SMAA_AREATEX_PIXEL_SIZE);
|
||
|
|
|
||
|
|
// Diagonal areas are on the second half of the texture:
|
||
|
|
texcoord.x += 0.5;
|
||
|
|
|
||
|
|
// Move to proper place, according to the subpixel offset:
|
||
|
|
texcoord.y += SMAA_AREATEX_SUBTEX_SIZE * offset;
|
||
|
|
|
||
|
|
// Do it!
|
||
|
|
return SMAA_AREATEX_SELECT(texture2D(areaTex, texcoord)); // LinearSampler
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This searches for diagonal patterns and returns the corresponding weights.
|
||
|
|
*/
|
||
|
|
vec2 SMAACalculateDiagWeights(sampler2D edgesTex, sampler2D areaTex, vec2 texcoord, vec2 e, vec4 subsampleIndices) {
|
||
|
|
vec2 weights = vec2(0.0, 0.0);
|
||
|
|
|
||
|
|
// Search for the line ends:
|
||
|
|
vec4 d;
|
||
|
|
vec2 end;
|
||
|
|
if (e.r > 0.0) {
|
||
|
|
d.xz = SMAASearchDiag1(edgesTex, texcoord, vec2(-1.0, 1.0), end);
|
||
|
|
d.x += float(end.y > 0.9);
|
||
|
|
} else
|
||
|
|
d.xz = vec2(0.0, 0.0);
|
||
|
|
d.yw = SMAASearchDiag1(edgesTex, texcoord, vec2(1.0, -1.0), end);
|
||
|
|
|
||
|
|
if (d.x + d.y > 2.0) { // d.x + d.y + 1 > 3
|
||
|
|
// Fetch the crossing edges:
|
||
|
|
vec4 coords = mad(vec4(-d.x + 0.25, d.x, d.y, -d.y - 0.25), SMAA_RT_METRICS.xyxy, texcoord.xyxy);
|
||
|
|
vec4 c;
|
||
|
|
c.xy = SMAASampleLevelZeroOffset(edgesTex, coords.xy, vec2(-1, 0)).rg;
|
||
|
|
c.zw = SMAASampleLevelZeroOffset(edgesTex, coords.zw, vec2( 1, 0)).rg;
|
||
|
|
c.yxwz = SMAADecodeDiagBilinearAccess(c.xyzw);
|
||
|
|
|
||
|
|
// Non-optimized version:
|
||
|
|
// vec4 coords = mad(vec4(-d.x, d.x, d.y, -d.y), SMAA_RT_METRICS.xyxy, texcoord.xyxy);
|
||
|
|
// vec4 c;
|
||
|
|
// c.x = SMAASampleLevelZeroOffset(edgesTex, coords.xy, vec2(-1, 0)).g;
|
||
|
|
// c.y = SMAASampleLevelZeroOffset(edgesTex, coords.xy, vec2( 0, 0)).r;
|
||
|
|
// c.z = SMAASampleLevelZeroOffset(edgesTex, coords.zw, vec2( 1, 0)).g;
|
||
|
|
// c.w = SMAASampleLevelZeroOffset(edgesTex, coords.zw, vec2( 1, -1)).r;
|
||
|
|
|
||
|
|
// Merge crossing edges at each side into a single value:
|
||
|
|
vec2 cc = mad(vec2(2.0, 2.0), c.xz, c.yw);
|
||
|
|
|
||
|
|
// Remove the crossing edge if we didn't found the end of the line:
|
||
|
|
SMAAMovc(bvec2(step(0.9, d.zw)), cc, vec2(0.0, 0.0));
|
||
|
|
|
||
|
|
// Fetch the areas for this line:
|
||
|
|
weights += SMAAAreaDiag(areaTex, d.xy, cc, subsampleIndices.z);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Search for the line ends:
|
||
|
|
d.xz = SMAASearchDiag2(edgesTex, texcoord, vec2(-1.0, -1.0), end);
|
||
|
|
if (SMAASampleLevelZeroOffset(edgesTex, texcoord, vec2(1, 0)).r > 0.0) {
|
||
|
|
d.yw = SMAASearchDiag2(edgesTex, texcoord, vec2(1.0, 1.0), end);
|
||
|
|
d.y += float(end.y > 0.9);
|
||
|
|
} else {
|
||
|
|
d.yw = vec2(0.0, 0.0);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (d.x + d.y > 2.0) { // d.x + d.y + 1 > 3
|
||
|
|
// Fetch the crossing edges:
|
||
|
|
vec4 coords = mad(vec4(-d.x, -d.x, d.y, d.y), SMAA_RT_METRICS.xyxy, texcoord.xyxy);
|
||
|
|
vec4 c;
|
||
|
|
c.x = SMAASampleLevelZeroOffset(edgesTex, coords.xy, vec2(-1, 0)).g;
|
||
|
|
c.y = SMAASampleLevelZeroOffset(edgesTex, coords.xy, vec2( 0, -1)).r;
|
||
|
|
c.zw = SMAASampleLevelZeroOffset(edgesTex, coords.zw, vec2( 1, 0)).gr;
|
||
|
|
vec2 cc = mad(vec2(2.0, 2.0), c.xz, c.yw);
|
||
|
|
|
||
|
|
// Remove the crossing edge if we didn't found the end of the line:
|
||
|
|
SMAAMovc(bvec2(step(0.9, d.zw)), cc, vec2(0.0, 0.0));
|
||
|
|
|
||
|
|
// Fetch the areas for this line:
|
||
|
|
weights += SMAAAreaDiag(areaTex, d.xy, cc, subsampleIndices.w).gr;
|
||
|
|
}
|
||
|
|
|
||
|
|
return weights;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This allows to determine how much length should we add in the last step
|
||
|
|
* of the searches. It takes the bilinearly interpolated edge (see
|
||
|
|
* @PSEUDO_GATHER4), and adds 0, 1 or 2, depending on which edges and
|
||
|
|
* crossing edges are active.
|
||
|
|
*/
|
||
|
|
float SMAASearchLength(sampler2D searchTex, vec2 e, float offset) {
|
||
|
|
// The texture is flipped vertically, with left and right cases taking half
|
||
|
|
// of the space horizontally:
|
||
|
|
vec2 scale = SMAA_SEARCHTEX_SIZE * vec2(0.5, -1.0);
|
||
|
|
vec2 bias = SMAA_SEARCHTEX_SIZE * vec2(offset, 1.0);
|
||
|
|
|
||
|
|
// Scale and bias to access texel centers:
|
||
|
|
scale += vec2(-1.0, 1.0);
|
||
|
|
bias += vec2( 0.5, -0.5);
|
||
|
|
|
||
|
|
// Convert from pixel coordinates to texcoords:
|
||
|
|
// (We use SMAA_SEARCHTEX_PACKED_SIZE because the texture is cropped)
|
||
|
|
scale *= 1.0 / SMAA_SEARCHTEX_PACKED_SIZE;
|
||
|
|
bias *= 1.0 / SMAA_SEARCHTEX_PACKED_SIZE;
|
||
|
|
|
||
|
|
// Lookup the search texture:
|
||
|
|
return SMAA_SEARCHTEX_SELECT(texture2D(searchTex, mad(scale, e, bias))); // LinearSampler
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Horizontal/vertical search functions for the 2nd pass.
|
||
|
|
*/
|
||
|
|
float SMAASearchXLeft(sampler2D edgesTex, sampler2D searchTex, vec2 texcoord, float end) {
|
||
|
|
/**
|
||
|
|
* @PSEUDO_GATHER4
|
||
|
|
* This texcoord has been offset by (-0.25, -0.125) in the vertex shader to
|
||
|
|
* sample between edge, thus fetching four edges in a row.
|
||
|
|
* Sampling with different offsets in each direction allows to disambiguate
|
||
|
|
* which edges are active from the four fetched ones.
|
||
|
|
*/
|
||
|
|
vec2 e = vec2(0.0, 1.0);
|
||
|
|
for (int i = 0; i < SMAA_MAX_SEARCH_STEPS; i++) {
|
||
|
|
if (!(texcoord.x > end && e.g > 0.8281 && e.r == 0.0)) break;
|
||
|
|
e = texture2D(edgesTex, texcoord).rg; // LinearSampler
|
||
|
|
texcoord = mad(-vec2(2.0, 0.0), SMAA_RT_METRICS.xy, texcoord);
|
||
|
|
}
|
||
|
|
|
||
|
|
float offset = mad(-(255.0 / 127.0), SMAASearchLength(searchTex, e, 0.0), 3.25);
|
||
|
|
return mad(SMAA_RT_METRICS.x, offset, texcoord.x);
|
||
|
|
|
||
|
|
// Non-optimized version:
|
||
|
|
// We correct the previous (-0.25, -0.125) offset we applied:
|
||
|
|
// texcoord.x += 0.25 * SMAA_RT_METRICS.x;
|
||
|
|
|
||
|
|
// The searches are bias by 1, so adjust the coords accordingly:
|
||
|
|
// texcoord.x += SMAA_RT_METRICS.x;
|
||
|
|
|
||
|
|
// Disambiguate the length added by the last step:
|
||
|
|
// texcoord.x += 2.0 * SMAA_RT_METRICS.x; // Undo last step
|
||
|
|
// texcoord.x -= SMAA_RT_METRICS.x * (255.0 / 127.0) * SMAASearchLength(searchTex, e, 0.0);
|
||
|
|
// return mad(SMAA_RT_METRICS.x, offset, texcoord.x);
|
||
|
|
}
|
||
|
|
|
||
|
|
float SMAASearchXRight(sampler2D edgesTex, sampler2D searchTex, vec2 texcoord, float end) {
|
||
|
|
vec2 e = vec2(0.0, 1.0);
|
||
|
|
for (int i = 0; i < SMAA_MAX_SEARCH_STEPS; i++) { if (!(texcoord.x < end && e.g > 0.8281 && e.r == 0.0)) break;
|
||
|
|
e = texture2D(edgesTex, texcoord).rg; // LinearSampler
|
||
|
|
texcoord = mad(vec2(2.0, 0.0), SMAA_RT_METRICS.xy, texcoord);
|
||
|
|
}
|
||
|
|
float offset = mad(-(255.0 / 127.0), SMAASearchLength(searchTex, e, 0.5), 3.25);
|
||
|
|
return mad(-SMAA_RT_METRICS.x, offset, texcoord.x);
|
||
|
|
}
|
||
|
|
|
||
|
|
float SMAASearchYUp(sampler2D edgesTex, sampler2D searchTex, vec2 texcoord, float end) {
|
||
|
|
vec2 e = vec2(1.0, 0.0);
|
||
|
|
for (int i = 0; i < SMAA_MAX_SEARCH_STEPS; i++) { if (!(texcoord.y > end && e.r > 0.8281 && e.g == 0.0)) break;
|
||
|
|
e = texture2D(edgesTex, texcoord).rg; // LinearSampler
|
||
|
|
texcoord = mad(-vec2(0.0, 2.0), SMAA_RT_METRICS.xy, texcoord);
|
||
|
|
}
|
||
|
|
float offset = mad(-(255.0 / 127.0), SMAASearchLength(searchTex, e.gr, 0.0), 3.25);
|
||
|
|
return mad(SMAA_RT_METRICS.y, offset, texcoord.y);
|
||
|
|
}
|
||
|
|
|
||
|
|
float SMAASearchYDown(sampler2D edgesTex, sampler2D searchTex, vec2 texcoord, float end) {
|
||
|
|
vec2 e = vec2(1.0, 0.0);
|
||
|
|
for (int i = 0; i < SMAA_MAX_SEARCH_STEPS; i++) { if (!(texcoord.y < end && e.r > 0.8281 && e.g == 0.0)) break;
|
||
|
|
e = texture2D(edgesTex, texcoord).rg; // LinearSampler
|
||
|
|
texcoord = mad(vec2(0.0, 2.0), SMAA_RT_METRICS.xy, texcoord);
|
||
|
|
}
|
||
|
|
float offset = mad(-(255.0 / 127.0), SMAASearchLength(searchTex, e.gr, 0.5), 3.25);
|
||
|
|
return mad(-SMAA_RT_METRICS.y, offset, texcoord.y);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Ok, we have the distance and both crossing edges. So, what are the areas
|
||
|
|
* at each side of current edge?
|
||
|
|
*/
|
||
|
|
vec2 SMAAArea(sampler2D areaTex, vec2 dist, float e1, float e2, float offset) {
|
||
|
|
// Rounding prevents precision errors of bilinear filtering:
|
||
|
|
vec2 texcoord = mad(vec2(SMAA_AREATEX_MAX_DISTANCE, SMAA_AREATEX_MAX_DISTANCE), round(4.0 * vec2(e1, e2)), dist);
|
||
|
|
|
||
|
|
// We do a scale and bias for mapping to texel space:
|
||
|
|
texcoord = mad(SMAA_AREATEX_PIXEL_SIZE, texcoord, 0.5 * SMAA_AREATEX_PIXEL_SIZE);
|
||
|
|
|
||
|
|
// Move to proper place, according to the subpixel offset:
|
||
|
|
texcoord.y = mad(SMAA_AREATEX_SUBTEX_SIZE, offset, texcoord.y);
|
||
|
|
|
||
|
|
// Do it!
|
||
|
|
return SMAA_AREATEX_SELECT(texture2D(areaTex, texcoord)); // LinearSampler
|
||
|
|
}
|
||
|
|
|
||
|
|
// Corner Detection Functions
|
||
|
|
void SMAADetectHorizontalCornerPattern(sampler2D edgesTex, inout vec2 weights, vec4 texcoord, vec2 d) {
|
||
|
|
#if !defined(SMAA_DISABLE_CORNER_DETECTION)
|
||
|
|
vec2 leftRight = step(d.xy, d.yx);
|
||
|
|
vec2 rounding = (1.0 - SMAA_CORNER_ROUNDING_NORM) * leftRight;
|
||
|
|
|
||
|
|
rounding /= leftRight.x + leftRight.y; // Reduce blending for pixels in the center of a line.
|
||
|
|
|
||
|
|
vec2 factor = vec2(1.0, 1.0);
|
||
|
|
factor.x -= rounding.x * SMAASampleLevelZeroOffset(edgesTex, texcoord.xy, vec2(0, 1)).r;
|
||
|
|
factor.x -= rounding.y * SMAASampleLevelZeroOffset(edgesTex, texcoord.zw, vec2(1, 1)).r;
|
||
|
|
factor.y -= rounding.x * SMAASampleLevelZeroOffset(edgesTex, texcoord.xy, vec2(0, -2)).r;
|
||
|
|
factor.y -= rounding.y * SMAASampleLevelZeroOffset(edgesTex, texcoord.zw, vec2(1, -2)).r;
|
||
|
|
|
||
|
|
weights *= saturate(factor);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void SMAADetectVerticalCornerPattern(sampler2D edgesTex, inout vec2 weights, vec4 texcoord, vec2 d) {
|
||
|
|
#if !defined(SMAA_DISABLE_CORNER_DETECTION)
|
||
|
|
vec2 leftRight = step(d.xy, d.yx);
|
||
|
|
vec2 rounding = (1.0 - SMAA_CORNER_ROUNDING_NORM) * leftRight;
|
||
|
|
|
||
|
|
rounding /= leftRight.x + leftRight.y;
|
||
|
|
|
||
|
|
vec2 factor = vec2(1.0, 1.0);
|
||
|
|
factor.x -= rounding.x * SMAASampleLevelZeroOffset(edgesTex, texcoord.xy, vec2( 1, 0)).g;
|
||
|
|
factor.x -= rounding.y * SMAASampleLevelZeroOffset(edgesTex, texcoord.zw, vec2( 1, 1)).g;
|
||
|
|
factor.y -= rounding.x * SMAASampleLevelZeroOffset(edgesTex, texcoord.xy, vec2(-2, 0)).g;
|
||
|
|
factor.y -= rounding.y * SMAASampleLevelZeroOffset(edgesTex, texcoord.zw, vec2(-2, 1)).g;
|
||
|
|
|
||
|
|
weights *= saturate(factor);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
vec4 subsampleIndices = vec4(0.0); // Just pass zero for SMAA 1x, see @SUBSAMPLE_INDICES.
|
||
|
|
// subsampleIndices = vec4(1.0, 1.0, 1.0, 0.0);
|
||
|
|
vec4 weights = vec4(0.0, 0.0, 0.0, 0.0);
|
||
|
|
vec2 e = texture2D(edgesTex, vTexCoord0).rg;
|
||
|
|
|
||
|
|
if (e.g > 0.0) { // Edge at north
|
||
|
|
|
||
|
|
#if !defined(SMAA_DISABLE_DIAG_DETECTION)
|
||
|
|
// Diagonals have both north and west edges, so searching for them in
|
||
|
|
// one of the boundaries is enough.
|
||
|
|
weights.rg = SMAACalculateDiagWeights(edgesTex, areaTex, vTexCoord0, e, subsampleIndices);
|
||
|
|
|
||
|
|
// We give priority to diagonals, so if we find a diagonal we skip
|
||
|
|
// horizontal/vertical processing.
|
||
|
|
if (weights.r == -weights.g) { // weights.r + weights.g == 0.0
|
||
|
|
#endif
|
||
|
|
|
||
|
|
vec2 d;
|
||
|
|
|
||
|
|
// Find the distance to the left:
|
||
|
|
vec3 coords;
|
||
|
|
coords.x = SMAASearchXLeft(edgesTex, searchTex, vOffset[0].xy, vOffset[2].x);
|
||
|
|
coords.y = vOffset[1].y; // vOffset[1].y = vTexCoord0.y - 0.25 * SMAA_RT_METRICS.y (@CROSSING_OFFSET)
|
||
|
|
d.x = coords.x;
|
||
|
|
|
||
|
|
// Now fetch the left crossing edges, two at a time using bilinear
|
||
|
|
// filtering. Sampling at -0.25 (see @CROSSING_OFFSET) enables to
|
||
|
|
// discern what value each edge has:
|
||
|
|
float e1 = texture2D(edgesTex, coords.xy).r; // LinearSampler
|
||
|
|
|
||
|
|
// Find the distance to the right:
|
||
|
|
coords.z = SMAASearchXRight(edgesTex, searchTex, vOffset[0].zw, vOffset[2].y);
|
||
|
|
d.y = coords.z;
|
||
|
|
|
||
|
|
// We want the distances to be in pixel units (doing this here allow to
|
||
|
|
// better interleave arithmetic and memory accesses):
|
||
|
|
d = abs(round(mad(SMAA_RT_METRICS.zz, d, -vPixCoord.xx)));
|
||
|
|
|
||
|
|
// SMAAArea below needs a sqrt, as the areas texture is compressed
|
||
|
|
// quadratically:
|
||
|
|
vec2 sqrt_d = sqrt(d);
|
||
|
|
|
||
|
|
// Fetch the right crossing edges:
|
||
|
|
float e2 = SMAASampleLevelZeroOffset(edgesTex, coords.zy, vec2(1, 0)).r;
|
||
|
|
|
||
|
|
// Ok, we know how this pattern looks like, now it is time for getting
|
||
|
|
// the actual area:
|
||
|
|
weights.rg = SMAAArea(areaTex, sqrt_d, e1, e2, subsampleIndices.y);
|
||
|
|
|
||
|
|
// Fix corners:
|
||
|
|
coords.y = vTexCoord0.y;
|
||
|
|
SMAADetectHorizontalCornerPattern(edgesTex, weights.rg, coords.xyzy, d);
|
||
|
|
|
||
|
|
#if !defined(SMAA_DISABLE_DIAG_DETECTION)
|
||
|
|
} else
|
||
|
|
e.r = 0.0; // Skip vertical processing.
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
if (e.r > 0.0) { // Edge at west
|
||
|
|
vec2 d;
|
||
|
|
|
||
|
|
// Find the distance to the top:
|
||
|
|
vec3 coords;
|
||
|
|
coords.y = SMAASearchYUp(edgesTex, searchTex, vOffset[1].xy, vOffset[2].z);
|
||
|
|
coords.x = vOffset[0].x; // vOffset[1].x = vTexCoord0.x - 0.25 * SMAA_RT_METRICS.x;
|
||
|
|
d.x = coords.y;
|
||
|
|
|
||
|
|
// Fetch the top crossing edges:
|
||
|
|
float e1 = texture2D(edgesTex, coords.xy).g; // LinearSampler
|
||
|
|
|
||
|
|
// Find the distance to the bottom:
|
||
|
|
coords.z = SMAASearchYDown(edgesTex, searchTex, vOffset[1].zw, vOffset[2].w);
|
||
|
|
d.y = coords.z;
|
||
|
|
|
||
|
|
// We want the distances to be in pixel units:
|
||
|
|
d = abs(round(mad(SMAA_RT_METRICS.ww, d, -vPixCoord.yy)));
|
||
|
|
|
||
|
|
// SMAAArea below needs a sqrt, as the areas texture is compressed
|
||
|
|
// quadratically:
|
||
|
|
vec2 sqrt_d = sqrt(d);
|
||
|
|
|
||
|
|
// Fetch the bottom crossing edges:
|
||
|
|
float e2 = SMAASampleLevelZeroOffset(edgesTex, coords.xz, vec2(0, 1)).g;
|
||
|
|
|
||
|
|
// Get the area for this direction:
|
||
|
|
weights.ba = SMAAArea(areaTex, sqrt_d, e1, e2, subsampleIndices.x);
|
||
|
|
|
||
|
|
// Fix corners:
|
||
|
|
coords.x = vTexCoord0.x;
|
||
|
|
SMAADetectVerticalCornerPattern(edgesTex, weights.ba, coords.xyxz, d);
|
||
|
|
}
|
||
|
|
|
||
|
|
gl_FragColor = weights;
|
||
|
|
}
|
||
|
|
`;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* -------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The area texture of {@link SMAABWeightCalculationFilter}.
|
||
|
|
* @type {PIXI.Texture}
|
||
|
|
*/
|
||
|
|
const areaTex = new PIXI.Texture(new PIXI.BaseTexture(
|
||
|
|
"data:image/webp;base64,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
|
||
|
|
{
|
||
|
|
mipmap: PIXI.MIPMAP_MODES.OFF,
|
||
|
|
anisotropicLevel: 0,
|
||
|
|
wrapMode: PIXI.WRAP_MODES.CLAMP,
|
||
|
|
scaleMode: PIXI.SCALE_MODES.LINEAR,
|
||
|
|
format: PIXI.FORMATS.RG,
|
||
|
|
type: PIXI.TYPES.UNSIGNED_BYTE
|
||
|
|
}
|
||
|
|
));
|
||
|
|
|
||
|
|
/* -------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The search texture of {@link SMAABWeightCalculationFilter}.
|
||
|
|
* @type {PIXI.Texture}
|
||
|
|
*/
|
||
|
|
const searchTex = new PIXI.Texture(new PIXI.BaseTexture(
|
||
|
|
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAAAAAQCAYAAACm53kpAAAAAXNSR0IArs4c6QAAAIBJREFUWEftl1ELgCAMhD/749Ift1pNEBlRvfRw82XisQ3mbqelwQawANU2wOq2uY0wh0IzxpljRpidWc6edww6+9/l/YIV+QIcF392gOrKDkgKqFNAfgZU7wCToCeSFUnVPEDfymD3/0UG5QuQFEgKXA8h2RkgT4EsQD6EtD9DO7PRXAFvjEKRAAAAAElFTkSuQmCC",
|
||
|
|
{
|
||
|
|
mipmap: PIXI.MIPMAP_MODES.OFF,
|
||
|
|
anisotropicLevel: 0,
|
||
|
|
wrapMode: PIXI.WRAP_MODES.CLAMP,
|
||
|
|
scaleMode: PIXI.SCALE_MODES.LINEAR,
|
||
|
|
format: PIXI.FORMATS.RED,
|
||
|
|
type: PIXI.TYPES.UNSIGNED_BYTE
|
||
|
|
}
|
||
|
|
));
|