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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Composite a picture cache tile into the framebuffer.
#include shared,yuv
#ifdef WR_FEATURE_YUV
flat varying mat3 vYuvColorMatrix;
flat varying vec3 vYuvOffsetVector;
flat varying float vYuvCoefficient;
flat varying int vYuvFormat;
flat varying vec3 vYuvLayers;
#ifdef SWGL
flat varying int vYuvColorSpace;
flat varying int vRescaleFactor;
#endif
varying vec2 vUV_y;
varying vec2 vUV_u;
varying vec2 vUV_v;
flat varying vec4 vUVBounds_y;
flat varying vec4 vUVBounds_u;
flat varying vec4 vUVBounds_v;
#else
flat varying vec4 vColor;
flat varying float vLayer;
varying vec2 vUv;
flat varying vec4 vUVBounds;
#endif
#ifdef WR_VERTEX_SHADER
// CPU side data is in CompositeInstance (gpu_types.rs) and is
// converted to GPU data using desc::COMPOSITE (renderer.rs) by
// filling vaos.composite_vao with VertexArrayKind::Composite.
PER_INSTANCE in vec4 aDeviceRect;
PER_INSTANCE in vec4 aDeviceClipRect;
PER_INSTANCE in vec4 aColor;
PER_INSTANCE in vec4 aParams;
PER_INSTANCE in vec3 aTextureLayers;
#ifdef WR_FEATURE_YUV
// YUV treats these as a UV clip rect (clamp)
PER_INSTANCE in vec4 aUvRect0;
PER_INSTANCE in vec4 aUvRect1;
PER_INSTANCE in vec4 aUvRect2;
#else
PER_INSTANCE in vec4 aUvRect0;
#endif
void main(void) {
// Get world position
vec2 world_pos = aDeviceRect.xy + aPosition.xy * aDeviceRect.zw;
// Clip the position to the world space clip rect
vec2 clipped_world_pos = clamp(world_pos, aDeviceClipRect.xy, aDeviceClipRect.xy + aDeviceClipRect.zw);
// Derive the normalized UV from the clipped vertex position
vec2 uv = (clipped_world_pos - aDeviceRect.xy) / aDeviceRect.zw;
#ifdef WR_FEATURE_YUV
int yuv_color_space = int(aParams.y);
int yuv_format = int(aParams.z);
float yuv_coefficient = aParams.w;
vYuvColorMatrix = get_yuv_color_matrix(yuv_color_space);
vYuvOffsetVector = get_yuv_offset_vector(yuv_color_space);
vYuvCoefficient = yuv_coefficient;
vYuvFormat = yuv_format;
vYuvLayers = aTextureLayers.xyz;
#ifdef SWGL
// swgl_commitTextureLinearYUV needs to know the color space specifier and
// also needs to know how many bits of scaling are required to normalize
// HDR textures.
vYuvColorSpace = yuv_color_space;
vRescaleFactor = int(log2(yuv_coefficient));
#endif
write_uv_rect(
aUvRect0.xy,
aUvRect0.zw,
uv,
TEX_SIZE(sColor0),
vUV_y,
vUVBounds_y
);
write_uv_rect(
aUvRect1.xy,
aUvRect1.zw,
uv,
TEX_SIZE(sColor1),
vUV_u,
vUVBounds_u
);
write_uv_rect(
aUvRect2.xy,
aUvRect2.zw,
uv,
TEX_SIZE(sColor2),
vUV_v,
vUVBounds_v
);
#else
vUv = mix(aUvRect0.xy, aUvRect0.zw, uv);
// flip_y might have the UV rect "upside down", make sure
// clamp works correctly:
vUVBounds = vec4(aUvRect0.x, min(aUvRect0.y, aUvRect0.w),
aUvRect0.z, max(aUvRect0.y, aUvRect0.w));
int rescale_uv = int(aParams.y);
if (rescale_uv == 1)
{
// using an atlas, so UVs are in pixels, and need to be
// normalized and clamped.
vec2 texture_size = TEX_SIZE(sColor0);
vUVBounds += vec4(0.5, 0.5, -0.5, -0.5);
#ifndef WR_FEATURE_TEXTURE_RECT
vUv /= texture_size;
vUVBounds /= texture_size.xyxy;
#endif
}
// Pass through color and texture array layer
vColor = aColor;
vLayer = aTextureLayers.x;
#endif
gl_Position = uTransform * vec4(clipped_world_pos, aParams.x /* z_id */, 1.0);
}
#endif
#ifdef WR_FRAGMENT_SHADER
void main(void) {
#ifdef WR_FEATURE_YUV
vec4 color = sample_yuv(
vYuvFormat,
vYuvColorMatrix,
vYuvOffsetVector,
vYuvCoefficient,
vYuvLayers,
vUV_y,
vUV_u,
vUV_v,
vUVBounds_y,
vUVBounds_u,
vUVBounds_v
);
#else
// The color is just the texture sample modulated by a supplied color
vec2 uv = clamp(vUv.xy, vUVBounds.xy, vUVBounds.zw);
# if defined(WR_FEATURE_TEXTURE_EXTERNAL) || defined(WR_FEATURE_TEXTURE_2D) || defined(WR_FEATURE_TEXTURE_RECT)
vec4 texel = TEX_SAMPLE(sColor0, vec3(uv, vLayer));
# else
vec4 texel = textureLod(sColor0, vec3(uv, vLayer), 0.0);
# endif
vec4 color = vColor * texel;
#endif
write_output(color);
}
#ifdef SWGL
void swgl_drawSpanRGBA8() {
#ifdef WR_FEATURE_YUV
if (vYuvFormat == YUV_FORMAT_PLANAR) {
if (!swgl_isTextureLinear(sColor0) || !swgl_isTextureLinear(sColor1) || !swgl_isTextureLinear(sColor2)) {
return;
}
int layer0 = swgl_textureLayerOffset(sColor0, vYuvLayers.x);
vec2 uv0 = swgl_linearQuantize(sColor0, vUV_y);
vec2 min_uv0 = swgl_linearQuantize(sColor0, vUVBounds_y.xy);
vec2 max_uv0 = swgl_linearQuantize(sColor0, vUVBounds_y.zw);
vec2 step_uv0 = swgl_linearQuantizeStep(sColor0, swgl_interpStep(vUV_y));
int layer1 = swgl_textureLayerOffset(sColor1, vYuvLayers.y);
vec2 uv1 = swgl_linearQuantize(sColor1, vUV_u);
vec2 min_uv1 = swgl_linearQuantize(sColor1, vUVBounds_u.xy);
vec2 max_uv1 = swgl_linearQuantize(sColor1, vUVBounds_u.zw);
vec2 step_uv1 = swgl_linearQuantizeStep(sColor1, swgl_interpStep(vUV_u));
int layer2 = swgl_textureLayerOffset(sColor2, vYuvLayers.z);
vec2 uv2 = swgl_linearQuantize(sColor2, vUV_v);
vec2 min_uv2 = swgl_linearQuantize(sColor2, vUVBounds_v.xy);
vec2 max_uv2 = swgl_linearQuantize(sColor2, vUVBounds_v.zw);
vec2 step_uv2 = swgl_linearQuantizeStep(sColor2, swgl_interpStep(vUV_v));
while (swgl_SpanLength > 0) {
swgl_commitTextureLinearYUV(sColor0, clamp(uv0, min_uv0, max_uv0), layer0,
sColor1, clamp(uv1, min_uv1, max_uv1), layer1,
sColor2, clamp(uv2, min_uv2, max_uv2), layer2,
vYuvColorSpace, vRescaleFactor);
uv0 += step_uv0;
uv1 += step_uv1;
uv2 += step_uv2;
}
} else if (vYuvFormat == YUV_FORMAT_NV12) {
if (!swgl_isTextureLinear(sColor0) || !swgl_isTextureLinear(sColor1)) {
return;
}
int layer0 = swgl_textureLayerOffset(sColor0, vYuvLayers.x);
vec2 uv0 = swgl_linearQuantize(sColor0, vUV_y);
vec2 min_uv0 = swgl_linearQuantize(sColor0, vUVBounds_y.xy);
vec2 max_uv0 = swgl_linearQuantize(sColor0, vUVBounds_y.zw);
vec2 step_uv0 = swgl_linearQuantizeStep(sColor0, swgl_interpStep(vUV_y));
int layer1 = swgl_textureLayerOffset(sColor1, vYuvLayers.y);
vec2 uv1 = swgl_linearQuantize(sColor1, vUV_u);
vec2 min_uv1 = swgl_linearQuantize(sColor1, vUVBounds_u.xy);
vec2 max_uv1 = swgl_linearQuantize(sColor1, vUVBounds_u.zw);
vec2 step_uv1 = swgl_linearQuantizeStep(sColor1, swgl_interpStep(vUV_u));
while (swgl_SpanLength > 0) {
swgl_commitTextureLinearYUV(sColor0, clamp(uv0, min_uv0, max_uv0), layer0,
sColor1, clamp(uv1, min_uv1, max_uv1), layer1,
vYuvColorSpace, vRescaleFactor);
uv0 += step_uv0;
uv1 += step_uv1;
}
} else if (vYuvFormat == YUV_FORMAT_INTERLEAVED) {
if (!swgl_isTextureLinear(sColor0) || !swgl_isTextureLinear(sColor1)) {
return;
}
int layer0 = swgl_textureLayerOffset(sColor0, vYuvLayers.x);
vec2 uv0 = swgl_linearQuantize(sColor0, vUV_y);
vec2 min_uv0 = swgl_linearQuantize(sColor0, vUVBounds_y.xy);
vec2 max_uv0 = swgl_linearQuantize(sColor0, vUVBounds_y.zw);
vec2 step_uv0 = swgl_linearQuantizeStep(sColor0, swgl_interpStep(vUV_y));
while (swgl_SpanLength > 0) {
swgl_commitTextureLinearYUV(sColor0, clamp(uv0, min_uv0, max_uv0), layer0,
vYuvColorSpace, vRescaleFactor);
uv0 += step_uv0;
}
}
#else
if (!swgl_isTextureRGBA8(sColor0) || !swgl_isTextureLinear(sColor0)) {
return;
}
int layer = swgl_textureLayerOffset(sColor0, vLayer);
if (swgl_allowTextureNearest(sColor0, vUv)) {
if (vColor != vec4(1.0)) {
swgl_commitTextureNearestColorRGBA8(sColor0, vUv, vUVBounds, vColor, layer);
} else {
swgl_commitTextureNearestRGBA8(sColor0, vUv, vUVBounds, layer);
}
return;
}
vec2 uv = swgl_linearQuantize(sColor0, vUv);
vec2 min_uv = swgl_linearQuantize(sColor0, vUVBounds.xy);
vec2 max_uv = swgl_linearQuantize(sColor0, vUVBounds.zw);
vec2 step_uv = swgl_linearQuantizeStep(sColor0, swgl_interpStep(vUv));
if (vColor != vec4(1.0)) {
while (swgl_SpanLength > 0) {
swgl_commitTextureLinearColorRGBA8(sColor0, clamp(uv, min_uv, max_uv), vColor, layer);
uv += step_uv;
}
} else {
while (swgl_SpanLength > 0) {
swgl_commitTextureLinearRGBA8(sColor0, clamp(uv, min_uv, max_uv), layer);
uv += step_uv;
}
}
#endif
}
#endif
#endif
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