Tweak the galaxy (cac80a6e) · Commits · e / os / android_frameworks_base

libs/rs/java/Galaxy/res/drawable-hdpi/flares.png

−244 B (413 B)

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libs/rs/java/Galaxy/res/raw/galaxy.c

+15 −12

Original line number	Diff line number	Diff line
		@@ -30,7 +30,7 @@

		#define PARTICLES_TEXTURES_COUNT 2

		#define ELLIPSE_RATIO 0.86f
		#define ELLIPSE_RATIO 0.892f
		#define ELLIPSE_TWIST 0.02333333333f

		void drawSpace(int width, int height) {
		@@ -47,15 +47,18 @@ void drawSpace(int width, int height) {
		}

		void drawLights(int width, int height) {
		float x = (width - 512.0f) / 2.0f;
		float y = (height - 512.0f) / 2.0f;
		float x = (width - 512.0f) * 0.5f;
		float y = (height - 512.0f) * 0.5f;

		// increase the size of the texture by 5% on each side
		x -= 512.0f * 0.05f;

		bindProgramFragment(NAMED_PFBackground);
		bindTexture(NAMED_PFBackground, 0, NAMED_TLight1);
		drawQuad(x + 512.0f, y , 0.0f,
		drawQuad(x + 512.0f * 1.1f, y , 0.0f,
		x , y , 0.0f,
		x , y + 512.0f, 0.0f,
		x + 512.0f, y + 512.0f, 0.0f);
		x + 512.0f * 1.1f, y + 512.0f, 0.0f);
		}

		void drawParticle(float particle, int index, float particleBuffer, int bufferIndex,
		@@ -67,11 +70,11 @@ void drawParticle(float particle, int index, float particleBuffer, int bufferI
		float r = particle[index + PARTICLE_STRUCT_RADIUS];

		float a = angle + speed;
		float x = distance * sinf(a);
		float y = distance * cosf(a) * ELLIPSE_RATIO;
		float x = distance * sinf_fast(a);
		float y = distance * cosf_fast(a) * ELLIPSE_RATIO;
		float z = distance * ELLIPSE_TWIST;
		float s = cosf(z);
		float t = sinf(z);
		float s = cosf_fast(z);
		float t = sinf_fast(z);

		float sX = t * x + s * y + w;
		float sY = s * x - t * y + h;

libs/rs/java/Galaxy/src/com/android/galaxy/rs/GalaxyRS.java

+10 −12

Original line number	Diff line number	Diff line
		@@ -49,7 +49,6 @@ class GalaxyRS {
		private static final int RSID_STATE = 0;

		private static final int TEXTURES_COUNT = 3;
		private static final int PARTICLES_TEXTURES_COUNT = 2;
		private static final int RSID_TEXTURE_SPACE = 0;
		private static final int RSID_TEXTURE_LIGHT1 = 1;
		private static final int RSID_TEXTURE_FLARES = 2;
		@@ -216,13 +215,15 @@ class GalaxyRS {

		@SuppressWarnings({"PointlessArithmeticExpression"})
		private void createParticle(float[] particles, int index, int bufferIndex) {
		float d = abs(randomGauss()) * GALAXY_RADIUS / 2.0f;
		float d = abs(randomGauss()) * GALAXY_RADIUS / 2.0f + random(-4.0f, 4.0f);
		float z = randomGauss() * 0.5f * 0.8f * ((GALAXY_RADIUS - d) / (float) GALAXY_RADIUS);
		z += 1.0f;

		particles[index + PARTICLE_STRUCT_ANGLE] = random(0.0f, (float) (Math.PI * 2.0));
		particles[index + PARTICLE_STRUCT_DISTANCE] = d;
		particles[index + PARTICLE_STRUCT_SPEED] = random(0.0015f, 0.0025f) *
		(0.5f + (0.5f * (float) GALAXY_RADIUS / d));
		particles[index + PARTICLE_STRUCT_RADIUS] = random(1.0f, 2.1f);
		(0.5f + (0.5f * (float) GALAXY_RADIUS / d)) * 0.7f;
		particles[index + PARTICLE_STRUCT_RADIUS] = z * random(1.2f, 2.1f);

		int red, green, blue;
		if (d < GALAXY_RADIUS / 3.0f) {
		@@ -235,26 +236,23 @@ class GalaxyRS {
		blue = (int) constrain(140 + (d / (float) GALAXY_RADIUS) * 115, 140, 255);
		}

		final int color = 0xFF000000 \| red \| green << 8 \| blue << 16;
		final int sprite = random(PARTICLES_TEXTURES_COUNT);
		final float u1 = sprite / (float) PARTICLES_TEXTURES_COUNT;
		final float u2 = (sprite + 1) / (float) PARTICLES_TEXTURES_COUNT;
		final int color = red \| green << 8 \| blue << 16 \| 0xff000000;

		final float[] floatData = mFloatData5;
		final Allocation buffer = mParticlesBuffer;

		floatData[0] = Float.intBitsToFloat(color);
		floatData[3] = u1;
		floatData[3] = 0.0f;
		floatData[4] = 1.0f;
		buffer.subData1D(bufferIndex, 1, floatData);

		bufferIndex++;
		floatData[3] = u2;
		floatData[3] = 1.0f;
		floatData[4] = 1.0f;
		buffer.subData1D(bufferIndex, 1, floatData);

		bufferIndex++;
		floatData[3] = u1 + (u2 - u1) / 2.0f;
		floatData[3] = 0.5f;
		floatData[4] = 0.0f;
		buffer.subData1D(bufferIndex, 1, floatData);
		}

libs/rs/rsScriptC_Lib.cpp

+42 −0

Original line number	Diff line number	Diff line
		@@ -170,6 +170,44 @@ static void SC_storeMatrix(uint32_t bank, uint32_t offset, const rsc_Matrix *m)
		#define DEG_TO_RAD PI / 180.0f
		#define RAD_TO_DEG 180.0f / PI

		static float SC_sinf_fast(float x)
		{
		const float A = 1.0f / (2.0f * M_PI);
		const float B = -16.0f;
		const float C = 8.0f;

		// scale angle for easy argument reduction
		x *= A;

		if (fabsf(x) >= 0.5f) {
		// argument reduction
		x = x - ceilf(x + 0.5f) + 1.0f;
		}

		const float y = B * x * fabsf(x) + C * x;
		return 0.2215f * (y * fabsf(y) - y) + y;
		}

		static float SC_cosf_fast(float x)
		{
		x += float(M_PI / 2);

		const float A = 1.0f / (2.0f * M_PI);
		const float B = -16.0f;
		const float C = 8.0f;

		// scale angle for easy argument reduction
		x *= A;

		if (fabsf(x) >= 0.5f) {
		// argument reduction
		x = x - ceilf(x + 0.5f) + 1.0f;
		}

		const float y = B * x * fabsf(x) + C * x;
		return 0.2215f * (y * fabsf(y) - y) + y;
		}

		static float SC_randf(float max)
		{
		float r = (float)rand();
		@@ -846,6 +884,10 @@ ScriptCState::SymbolTable_t ScriptCState::gSyms[] = {
		"int", "(int)" },
		{ "absf", (void *)&fabs,
		"float", "(float)" },
		{ "sinf_fast", (void *)&SC_sinf_fast,
		"float", "(float)" },
		{ "cosf_fast", (void *)&SC_cosf_fast,
		"float", "(float)" },
		{ "sinf", (void *)&sinf,
		"float", "(float)" },
		{ "cosf", (void *)&cosf,