Add more shadow control knobs (f5be3ca5) · Commits · e / os / android_frameworks_base

libs/hwui/Caches.cpp

+17 −12

Original line number	Diff line number	Diff line
		@@ -691,9 +691,10 @@ void Caches::initTempProperties() {
		propertyAmbientShadowStrength = 25;
		propertySpotShadowStrength = 25;

		propertyLightPosXScale = 0.5f;
		propertyLightPosYScale = 0.0f;
		propertyLightPosZScale = 1.0f;
		propertyLightDiameter = -1.0f;
		propertyLightPosY = -1.0f;
		propertyLightPosZ = -1.0f;
		propertyAmbientRatio = -1.0f;
		}

		void Caches::setTempProperty(const char* name, const char* value) {
		@@ -706,17 +707,21 @@ void Caches::setTempProperty(const char* name, const char* value) {
		propertySpotShadowStrength = atoi(value);
		ALOGD("spot shadow strength = 0x%x out of 0xff", propertySpotShadowStrength);
		return;
		} else if (!strcmp(name, "lightPosXScale")) {
		propertyLightPosXScale = fmin(fmax(atof(value), 0.0), 1.0);
		ALOGD("lightPos X Scale = %.2f", propertyLightPosXScale);
		} else if (!strcmp(name, "ambientRatio")) {
		propertyAmbientRatio = fmin(fmax(atof(value), 0.0), 10.0);
		ALOGD("ambientRatio = %.2f", propertyAmbientRatio);
		return;
		} else if (!strcmp(name, "lightPosYScale")) {
		propertyLightPosYScale = fmin(fmax(atof(value), 0.0), 1.0);
		ALOGD("lightPos Y Scale = %.2f", propertyLightPosXScale);
		} else if (!strcmp(name, "lightDiameter")) {
		propertyLightDiameter = fmin(fmax(atof(value), 0.0), 3000.0);
		ALOGD("lightDiameter = %.2f", propertyLightDiameter);
		return;
		} else if (!strcmp(name, "lightPosZScale")) {
		propertyLightPosZScale = fmin(fmax(atof(value), 0.0), 1.0);
		ALOGD("lightPos Z Scale = %.2f", propertyLightPosXScale);
		} else if (!strcmp(name, "lightPosY")) {
		propertyLightPosY = fmin(fmax(atof(value), 0.0), 3000.0);
		ALOGD("lightPos Y = %.2f", propertyLightPosY);
		return;
		} else if (!strcmp(name, "lightPosZ")) {
		propertyLightPosZ = fmin(fmax(atof(value), 0.0), 3000.0);
		ALOGD("lightPos Z = %.2f", propertyLightPosZ);
		return;
		}
		ALOGD(" failed");

libs/hwui/Caches.h

+4 −7

Original line number	Diff line number	Diff line
		@@ -352,13 +352,10 @@ public:
		void initTempProperties();
		void setTempProperty(const char* name, const char* value);

		// These scaling factors range from 0 to 1, to scale the light position
		// within the bound of (screenwidth, screenheight, max(screenwidth, screenheight));
		// The default scale is (0.5, 0, 1) which put the light at
		// (screenwidth / 2, 0, max(screenwidth, screenheight)).
		float propertyLightPosXScale;
		float propertyLightPosYScale;
		float propertyLightPosZScale;
		float propertyLightDiameter;
		float propertyLightPosY;
		float propertyLightPosZ;
		float propertyAmbientRatio;
		int propertyAmbientShadowStrength;
		int propertySpotShadowStrength;

libs/hwui/OpenGLRenderer.cpp

+1 −3

Original line number	Diff line number	Diff line
		@@ -3287,10 +3287,8 @@ status_t OpenGLRenderer::drawShadow(const mat4& casterTransformXY, const mat4& c
		if (mCaches.propertySpotShadowStrength > 0) {
		paint.setARGB(casterAlpha * mCaches.propertySpotShadowStrength, 0, 0, 0);
		VertexBuffer spotShadowVertexBuffer;
		Vector3 lightPosScale(mCaches.propertyLightPosXScale,
		mCaches.propertyLightPosYScale, mCaches.propertyLightPosZScale);
		VertexBufferMode vertexBufferMode = ShadowTessellator::tessellateSpotShadow(
		isCasterOpaque, casterPolygon, casterVertexCount, lightPosScale,
		isCasterOpaque, casterPolygon, casterVertexCount,
		*currentTransform(), getWidth(), getHeight(), casterBounds, localClip,
		spotShadowVertexBuffer);
		drawVertexBuffer(vertexBufferMode, spotShadowVertexBuffer, &paint);

libs/hwui/ShadowTessellator.cpp

+25 −5

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@
		#include <utils/Trace.h>

		#include "AmbientShadow.h"
		#include "Caches.h"
		#include "ShadowTessellator.h"
		#include "SpotShadow.h"

		@@ -41,9 +42,14 @@ VertexBufferMode ShadowTessellator::tessellateAmbientShadow(bool isCasterOpaque,

		// A bunch of parameters to tweak the shadow.
		// TODO: Allow some of these changable by debug settings or APIs.
		const float heightFactor = 1.0f / 128;
		float heightFactor = 1.0f / 128;
		const float geomFactor = 64;

		Caches& caches = Caches::getInstance();
		if (CC_UNLIKELY(caches.propertyAmbientRatio > 0.0f)) {
		heightFactor *= caches.propertyAmbientRatio;
		}

		Rect ambientShadowBounds(casterBounds);
		ambientShadowBounds.outset(maxZ * geomFactor * heightFactor);

		@@ -62,16 +68,26 @@ VertexBufferMode ShadowTessellator::tessellateAmbientShadow(bool isCasterOpaque,

		VertexBufferMode ShadowTessellator::tessellateSpotShadow(bool isCasterOpaque,
		const Vector3* casterPolygon, int casterVertexCount,
		const Vector3& lightPosScale, const mat4& receiverTransform,
		const mat4& receiverTransform,
		int screenWidth, int screenHeight, const Rect& casterBounds,
		const Rect& localClip, VertexBuffer& shadowVertexBuffer) {
		ATRACE_CALL();

		Caches& caches = Caches::getInstance();

		// A bunch of parameters to tweak the shadow.
		// TODO: Allow some of these changable by debug settings or APIs.
		int maximal = max(screenWidth, screenHeight);
		Vector3 lightCenter(screenWidth * lightPosScale.x, screenHeight * lightPosScale.y,
		maximal * lightPosScale.z);
		Vector3 lightCenter(screenWidth * 0.5f, 0, maximal);

		if (CC_UNLIKELY(caches.propertyLightPosY > 0)) {
		lightCenter.y = - caches.propertyLightPosY; // negated since this shifts up
		}
		if (CC_UNLIKELY(caches.propertyLightPosZ > 0)) {
		lightCenter.z = caches.propertyLightPosZ;
		}


		#if DEBUG_SHADOW
		ALOGD("light center %f %f %f", lightCenter.x, lightCenter.y, lightCenter.z);
		#endif
		@@ -82,9 +98,13 @@ VertexBufferMode ShadowTessellator::tessellateSpotShadow(bool isCasterOpaque,
		reverseReceiverTransform.loadInverse(receiverTransform);
		reverseReceiverTransform.mapPoint3d(lightCenter);

		const float lightSize = maximal / 4;
		float lightSize = maximal / 4;
		const int lightVertexCount = 8;

		if (CC_UNLIKELY(caches.propertyLightDiameter > 0)) {
		lightSize = caches.propertyLightDiameter;
		}

		// Now light and caster are both in local space, we will check whether
		// the shadow is within the clip area.
		Rect lightRect = Rect(lightCenter.x - lightSize, lightCenter.y - lightSize,

libs/hwui/ShadowTessellator.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -73,7 +73,7 @@ public:

		static VertexBufferMode tessellateSpotShadow(bool isCasterOpaque,
		const Vector3* casterPolygon, int casterVertexCount,
		const Vector3& lightPosScale, const mat4& receiverTransform,
		const mat4& receiverTransform,
		int screenWidth, int screenHeight, const Rect& casterBounds,
		const Rect& localClip, VertexBuffer& shadowVertexBuffer);