Kawase blur feedback (0ede0213) · Commits · e / os / android_frameworks_native

libs/renderengine/gl/filters/KawaseBlurFilter.cpp

+8 −10

Original line number	Diff line number	Diff line
		@@ -106,21 +106,19 @@ string KawaseBlurFilter::getFragmentShader() const {
		precision mediump float;

		uniform sampler2D uTexture;
		highp uniform vec2 uOffset;
		uniform vec2 uOffset;

		highp in vec2 vUV;
		out vec4 fragColor;

		vec4 kawaseBlur() {
		return (texture(uTexture, vec2(-1.0, 1.0) * uOffset + vUV, 0.0)
		+ texture(uTexture, uOffset + vUV, 0.0)
		+ texture(uTexture, vec2(1.0, -1.0) * uOffset + vUV, 0.0)
		+ texture(uTexture, vec2(-1.0) * uOffset + vUV, 0.0))
		* 0.25;
		}

		void main() {
		fragColor = kawaseBlur();
		fragColor = texture(uTexture, vUV, 0.0);
		fragColor += texture(uTexture, vUV + vec2( uOffset.x, uOffset.y), 0.0);
		fragColor += texture(uTexture, vUV + vec2( uOffset.x, -uOffset.y), 0.0);
		fragColor += texture(uTexture, vUV + vec2(-uOffset.x, uOffset.y), 0.0);
		fragColor += texture(uTexture, vUV + vec2(-uOffset.x, -uOffset.y), 0.0);

		fragColor = vec4(fragColor.rgb * 0.2, 1.0);
		}
		)SHADER";
		}

+1 −1

Original line number	Diff line number	Diff line
		@@ -30,7 +30,7 @@ namespace gl {

		class KawaseBlurFilter : public BlurFilter {
		public:
		static constexpr uint32_t kMaxPasses = 8;
		static constexpr uint32_t kMaxPasses = 6;

		explicit KawaseBlurFilter(GLESRenderEngine& engine);
		status_t prepare() override;