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fix: sao precison bug in some mobile devicd (#2828)

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This commit is contained in:
ChenMo
2025-09-18 16:43:13 +08:00
committed by GitHub
parent 9dbb725f5f
commit dcb16ba25f
4 changed files with 12 additions and 4 deletions
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4
packages/core/src/RenderPipeline/BasicRenderPipeline.ts
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@@ -203,8 +203,8 @@ export class BasicRenderPipeline {
// Scalable ambient obscurance pass
// Before opaque pass so materials can sample ambient occlusion in BRDF
if (ambientOcclusionEnabled && supportDepthTexture) {
const saoPass = this._saoPass;
const saoPass = this._saoPass;
if (ambientOcclusionEnabled && supportDepthTexture && saoPass.isSupported) {
saoPass.onConfig(camera, this._depthOnlyPass.renderTarget);
saoPass.onRender(context);
} else {

3
packages/core/src/lighting/ambientOcclusion/ScalableAmbientObscurancePass.ts
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@@ -29,6 +29,8 @@ export class ScalableAmbientObscurancePass extends PipelinePass {
private static _powerProp = ShaderProperty.getByName("material_power");
private static _invProjScaleXYProp = ShaderProperty.getByName("material_invProjScaleXY");
readonly isSupported: boolean;
// Shader properties for bilateral blur
private static _farPlaneOverEdgeDistanceProp = ShaderProperty.getByName("material_farPlaneOverEdgeDistance");
private static _kernelProp = ShaderProperty.getByName("material_kernel");
@@ -52,6 +54,7 @@ export class ScalableAmbientObscurancePass extends PipelinePass {
const material = new Material(engine, Shader.find(ScalableAmbientObscurancePass.SHADER_NAME));
material._addReferCount(1);
this._material = material;
this.isSupported = this.engine._hardwareRenderer.capability.isFragmentHighPrecision;
}
onConfig(camera: Camera, depthRenderTarget: RenderTarget): void {

4
packages/core/src/lighting/ambientOcclusion/shaders/ScalableAmbientOcclusion.glsl
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@@ -7,7 +7,7 @@
varying vec2 v_uv;
uniform vec4 renderer_texelSize; // x: 1/width, y: 1/height, z: width, w: height
uniform sampler2D renderer_BlitTexture; // Camera_DepthTexture
uniform highp sampler2D renderer_BlitTexture; // Camera_DepthTexture
// float inc = (1.0f / (SAMPLE_COUNT - 0.5f)) * SPIRAL_TURNS * 2.0 * PI
// const vec2 angleIncCosSin = vec2(cos(inc), sin(inc))
@@ -50,7 +50,7 @@ float depthToViewZ(float depth) {
// reconstructing normal from depth buffer
// https://atyuwen.github.io/posts/normal-reconstruction
// https://wickedengine.net/2019/09/22/improved-normal-reconstruction-from-depth/
vec3 computeViewSpaceNormal(vec2 uv, sampler2D depthTexture, float depth, vec3 viewPos, vec2 texel, vec2 invProjScaleXY) {
vec3 computeViewSpaceNormal(vec2 uv, highp sampler2D depthTexture, float depth, vec3 viewPos, vec2 texel, vec2 invProjScaleXY) {
vec3 normal = vec3(0.0);
#if SSAO_QUALITY == 0 || SSAO_QUALITY == 1
vec2 uvdx = uv + vec2(texel.x, 0.0);

5
packages/rhi-webgl/src/GLCapability.ts
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@@ -72,6 +72,11 @@ export class GLCapability {
return this._maxAntiAliasing;
}
get isFragmentHighPrecision(): boolean {
const gl = this._rhi.gl;
return gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT).precision !== 0;
}
get rhi() {
return this._rhi;
}