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- add initial version of line stipple renderer

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- 'vbo' moved to 'Layers'
This commit is contained in:
Hannes Janetzek
2013-02-22 05:30:24 +01:00
parent a0083ae484
commit 7cf4ca27f3
23 changed files with 1148 additions and 449 deletions
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7
src/org/oscim/utils/FastMath.java
View File

@@ -54,6 +54,13 @@ public class FastMath {
return (pow > 0 ? (1 << pow) : (1.0f / (1 << -pow)));
}
public static int clamp(int value, int max, int min){
return (value < min ? min : (value > max ? max : value));
}
public static byte clampToByte(int value){
return (byte)(value < 0 ? 0 : (value > 255 ? 255 : value));
}
public static float abs(float value){
return value < 0 ? -value : value;

80
src/org/oscim/utils/GlUtils.java
View File

@@ -30,10 +30,25 @@ import android.util.Log;
public class GlUtils {
private static String TAG = "GlUtils";
public static void setTextureParameter(int min_filter, int mag_filter, int wrap_s, int wrap_t) {
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_MIN_FILTER,
min_filter);
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_MAG_FILTER,
mag_filter);
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_WRAP_S,
wrap_s); // Set U Wrapping
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_WRAP_T,
wrap_t); // Set V Wrapping
}
/**
* @param bitmap
* ...
* @return gl identifier
* @return textureId
*/
public static int loadTextures(Bitmap bitmap) {
@@ -44,21 +59,8 @@ public class GlUtils {
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureID);
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_MIN_FILTER,
GLES20.GL_LINEAR);
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_MAG_FILTER,
GLES20.GL_LINEAR);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_WRAP_S,
GLES20.GL_CLAMP_TO_EDGE);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_WRAP_T,
GLES20.GL_CLAMP_TO_EDGE);
setTextureParameter(GLES20.GL_LINEAR, GLES20.GL_LINEAR,
GLES20.GL_CLAMP_TO_EDGE, GLES20.GL_CLAMP_TO_EDGE);
GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);
@@ -66,24 +68,13 @@ public class GlUtils {
}
public static int loadTexture(byte[] pixel, int width, int height, int format,
int wrap_s, int wrap_t) {
int min_filter, int mag_filter, int wrap_s, int wrap_t) {
int[] textureIds = new int[1];
GLES20.glGenTextures(1, textureIds, 0);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureIds[0]);
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_MIN_FILTER,
GLES20.GL_NEAREST);
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_MAG_FILTER,
GLES20.GL_NEAREST);
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_WRAP_S,
wrap_s); // Set U Wrapping
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_WRAP_T,
wrap_t); // Set V Wrapping
setTextureParameter(min_filter, mag_filter, wrap_s, wrap_t);
ByteBuffer buf = ByteBuffer.allocateDirect(width * height).order(ByteOrder.nativeOrder());
buf.put(pixel);
@@ -96,6 +87,37 @@ public class GlUtils {
return textureIds[0];
}
public static int loadStippleTexture(byte[] stipple) {
int sum = 0;
for (byte flip : stipple)
sum += flip;
byte[] pixel = new byte[sum];
boolean on = true;
int pos = 0;
for (byte flip : stipple) {
float max = flip;
for (int s = 0; s < flip; s++) {
float color = Math.abs(s / (max - 1) - 0.5f);
if (on)
color = 255 * (1 - color);
else
color = 255 * color;
pixel[pos + s] = FastMath.clampToByte((int) color);
}
on = !on;
pos += flip;
}
return loadTexture(pixel, sum, 1, GLES20.GL_ALPHA,
GLES20.GL_LINEAR, GLES20.GL_LINEAR,
//GLES20.GL_NEAREST, GLES20.GL_NEAREST,
GLES20.GL_REPEAT, GLES20.GL_REPEAT);
}
/**
* @param shaderType
* shader type