Revision faa3ff56
Added by Leszek Koltunski almost 7 years ago
| src/main/java/org/distorted/library/effect/PostprocessEffectGlow.java | ||
|---|---|---|
| 64 | 64 |
private static int mIndex1, mIndex2; |
| 65 | 65 |
|
| 66 | 66 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 67 |
// This implements the 'Better separable implementation using GPU fixed function sampling' from |
|
| 68 |
// https://software.intel.com/en-us/blogs/2014/07/15/an-investigation-of-fast-real-time-gpu-based-image-blur-algorithms |
|
| 67 | 69 |
|
| 68 |
/** |
|
| 69 |
* Make the object glow with a specific color and a halo of specific radius. |
|
| 70 |
* |
|
| 71 |
* @param glowRadius The 'strength' if the effect, in pixels. 0 = no halo, 10 = halo of roughly 10 pixels |
|
| 72 |
* around the whole object. |
|
| 73 |
* @param color RGBA of the color with which to draw the glow. |
|
| 74 |
*/ |
|
| 75 |
public PostprocessEffectGlow(Data1D glowRadius, Data4D color) |
|
| 70 |
private void computeGaussianKernel(int radius) |
|
| 76 | 71 |
{
|
| 77 |
super(EffectName.GLOW); |
|
| 78 |
mGlowRadius = glowRadius; |
|
| 79 |
mColor = color; |
|
| 72 |
int offset = radius + radius*radius/4; |
|
| 73 |
|
|
| 74 |
if( weightsCache[offset]==0.0f ) |
|
| 75 |
{
|
|
| 76 |
float z, x= 0.0f, P= (float)NUM_GAUSSIAN / (radius>3 ? radius:3); |
|
| 77 |
mWeights[0] = GAUSSIAN[0]; |
|
| 78 |
float sum = GAUSSIAN[0]; |
|
| 79 |
int j; |
|
| 80 |
|
|
| 81 |
for(int i=1; i<=radius; i++) |
|
| 82 |
{
|
|
| 83 |
x += P; |
|
| 84 |
j = (int)x; |
|
| 85 |
z = x-j; |
|
| 86 |
|
|
| 87 |
mWeights[i] = (1-z)*GAUSSIAN[j] + z*GAUSSIAN[j+1]; |
|
| 88 |
sum += 2*mWeights[i]; |
|
| 89 |
} |
|
| 90 |
|
|
| 91 |
for(int i=0; i<=radius; i++) mWeights[i] /= sum; |
|
| 92 |
|
|
| 93 |
int numloops = radius/2; |
|
| 94 |
weightsCache[offset] = mWeights[0]; |
|
| 95 |
offsetsCache[offset] = 0.0f; |
|
| 96 |
|
|
| 97 |
for(int i=0; i<numloops; i++) |
|
| 98 |
{
|
|
| 99 |
offsetsCache[offset+i+1] = mWeights[2*i+1]*(2*i+1) + mWeights[2*i+2]*(2*i+2); |
|
| 100 |
weightsCache[offset+i+1] = mWeights[2*i+1] + mWeights[2*i+2]; |
|
| 101 |
offsetsCache[offset+i+1]/= weightsCache[offset+i+1]; |
|
| 102 |
} |
|
| 103 |
|
|
| 104 |
if( radius%2 == 1 ) |
|
| 105 |
{
|
|
| 106 |
int index = offset + radius/2 +1; |
|
| 107 |
offsetsCache[index]=radius; |
|
| 108 |
weightsCache[index]=mWeights[radius]; |
|
| 109 |
} |
|
| 110 |
} |
|
| 80 | 111 |
} |
| 81 | 112 |
|
| 82 | 113 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 83 |
|
|
| 114 |
/** |
|
| 115 |
* Only for use by the library itself. |
|
| 116 |
* |
|
| 117 |
* @y.exclude |
|
| 118 |
*/ |
|
| 84 | 119 |
public boolean compute(float[] uniforms, int index, long currentDuration, long step ) |
| 85 | 120 |
{
|
| 86 | 121 |
mColor.get(uniforms,index+1,currentDuration,step); |
| ... | ... | |
| 88 | 123 |
} |
| 89 | 124 |
|
| 90 | 125 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 91 |
|
|
| 126 |
/** |
|
| 127 |
* Only for use by the library itself. |
|
| 128 |
* |
|
| 129 |
* @y.exclude |
|
| 130 |
*/ |
|
| 92 | 131 |
public int apply(float[] uniforms, int index, float qualityScale, DistortedFramebuffer buffer) |
| 93 | 132 |
{
|
| 94 | 133 |
if( mProgram1 ==null) |
| ... | ... | |
| 151 | 190 |
} |
| 152 | 191 |
|
| 153 | 192 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 154 |
|
|
| 193 |
// PUBLIC API |
|
| 194 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
|
| 195 |
/** |
|
| 196 |
* Have to call this before the shaders get compiled (i.e before Distorted.onCreate()) for the Effect to work. |
|
| 197 |
*/ |
|
| 155 | 198 |
public static void enable() |
| 156 | 199 |
{
|
| 157 | 200 |
final String glowVertex = |
| ... | ... | |
| 220 | 263 |
} |
| 221 | 264 |
|
| 222 | 265 |
/////////////////////////////////////////////////////////////////////////////////////////////////// |
| 223 |
// This implements the 'Better separable implementation using GPU fixed function sampling' from |
|
| 224 |
// https://software.intel.com/en-us/blogs/2014/07/15/an-investigation-of-fast-real-time-gpu-based-image-blur-algorithms |
|
| 225 | 266 |
|
| 226 |
private void computeGaussianKernel(int radius) |
|
| 267 |
/** |
|
| 268 |
* Make the object glow with a specific color and a halo of specific radius. |
|
| 269 |
* |
|
| 270 |
* @param glowRadius The 'strength' if the effect, in pixels. 0 = no halo, 10 = halo of roughly 10 pixels |
|
| 271 |
* around the whole object. |
|
| 272 |
* @param color RGBA of the color with which to draw the glow. |
|
| 273 |
*/ |
|
| 274 |
public PostprocessEffectGlow(Data1D glowRadius, Data4D color) |
|
| 227 | 275 |
{
|
| 228 |
int offset = radius + radius*radius/4; |
|
| 229 |
|
|
| 230 |
if( weightsCache[offset]==0.0f ) |
|
| 231 |
{
|
|
| 232 |
float z, x= 0.0f, P= (float)NUM_GAUSSIAN / (radius>3 ? radius:3); |
|
| 233 |
mWeights[0] = GAUSSIAN[0]; |
|
| 234 |
float sum = GAUSSIAN[0]; |
|
| 235 |
int j; |
|
| 236 |
|
|
| 237 |
for(int i=1; i<=radius; i++) |
|
| 238 |
{
|
|
| 239 |
x += P; |
|
| 240 |
j = (int)x; |
|
| 241 |
z = x-j; |
|
| 242 |
|
|
| 243 |
mWeights[i] = (1-z)*GAUSSIAN[j] + z*GAUSSIAN[j+1]; |
|
| 244 |
sum += 2*mWeights[i]; |
|
| 245 |
} |
|
| 246 |
|
|
| 247 |
for(int i=0; i<=radius; i++) mWeights[i] /= sum; |
|
| 248 |
|
|
| 249 |
int numloops = radius/2; |
|
| 250 |
weightsCache[offset] = mWeights[0]; |
|
| 251 |
offsetsCache[offset] = 0.0f; |
|
| 252 |
|
|
| 253 |
for(int i=0; i<numloops; i++) |
|
| 254 |
{
|
|
| 255 |
offsetsCache[offset+i+1] = mWeights[2*i+1]*(2*i+1) + mWeights[2*i+2]*(2*i+2); |
|
| 256 |
weightsCache[offset+i+1] = mWeights[2*i+1] + mWeights[2*i+2]; |
|
| 257 |
offsetsCache[offset+i+1]/= weightsCache[offset+i+1]; |
|
| 258 |
} |
|
| 259 |
|
|
| 260 |
if( radius%2 == 1 ) |
|
| 261 |
{
|
|
| 262 |
int index = offset + radius/2 +1; |
|
| 263 |
offsetsCache[index]=radius; |
|
| 264 |
weightsCache[index]=mWeights[radius]; |
|
| 265 |
} |
|
| 266 |
} |
|
| 276 |
super(EffectName.GLOW); |
|
| 277 |
mGlowRadius = glowRadius; |
|
| 278 |
mColor = color; |
|
| 267 | 279 |
} |
| 268 | 280 |
} |
Also available in: Unified diff
Javadoc.