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Diffstat (limited to 'src/demos/hdr/HDRTexture.java')
-rwxr-xr-xsrc/demos/hdr/HDRTexture.java495
1 files changed, 0 insertions, 495 deletions
diff --git a/src/demos/hdr/HDRTexture.java b/src/demos/hdr/HDRTexture.java
deleted file mode 100755
index bf6bb71..0000000
--- a/src/demos/hdr/HDRTexture.java
+++ /dev/null
@@ -1,495 +0,0 @@
-package demos.hdr;
-
-import java.io.*;
-import java.nio.*;
-
-import javax.media.opengl.*;
-
-public class HDRTexture {
- private RGBE.Header header;
- private byte[] m_data;
- private float[] m_floatdata;
- private int m_width, m_height;
- private float m_max_r, m_max_g, m_max_b;
- private float m_min_r, m_min_g, m_min_b;
- private float m_max;
- private int m_target;
-
- public HDRTexture(String filename) throws IOException {
- this(new FileInputStream(filename));
- }
-
- public HDRTexture(InputStream in) throws IOException {
- DataInputStream datain = new DataInputStream(new BufferedInputStream(in));
- header = RGBE.readHeader(datain);
- m_width = header.getWidth();
- m_height = header.getHeight();
- m_data = new byte[m_width * m_height * 4];
- RGBE.readPixelsRawRLE(datain, m_data, 0, m_width, m_height);
- System.err.println("Loaded HDR image " + m_width + " x " + m_height);
- }
-
- public byte[] getData() { return m_data; }
- public int getPixelIndex(int x, int y) {
- return ((m_width * (m_height - 1 - y)) + x) * 4;
- }
- public float[] getFloatData() { return m_floatdata; }
- public int getPixelFloatIndex(int x, int y) {
- return ((m_width * (m_height - 1 - y)) + x) * 3;
- }
-
- public void analyze() {
- m_max_r = m_max_g = m_max_b = 0.0f;
- m_min_r = m_min_g = m_min_b = 1e10f;
- int mine = 255;
- int maxe = 0;
-
- int ptr = 0;
- float[] rgb = new float[3];
- for(int i=0; i<m_width*m_height; i++) {
- int e = m_data[ptr+3] & 0xFF;
- if (e < mine) mine = e;
- if (e > maxe) maxe = e;
-
- RGBE.rgbe2float(rgb, m_data, ptr);
- float r = rgb[0];
- float g = rgb[1];
- float b = rgb[2];
- if (r > m_max_r) m_max_r = r;
- if (g > m_max_g) m_max_g = g;
- if (b > m_max_b) m_max_b = b;
- if (r < m_min_r) m_min_r = r;
- if (g < m_min_g) m_min_g = g;
- if (b < m_min_b) m_min_b = b;
- ptr += 4;
- }
- System.err.println("max intensity: " + m_max_r + " " + m_max_g + " " + m_max_b);
- System.err.println("min intensity: " + m_min_r + " " + m_min_g + " " + m_min_b);
- System.err.println("max e: " + maxe + " = " + RGBE.ldexp(1.0, maxe-128));
- System.err.println("min e: " + mine + " = " + RGBE.ldexp(1.0, mine-128));
-
- m_max = m_max_r;
- if (m_max_g > m_max) m_max = m_max_g;
- if (m_max_b > m_max) m_max = m_max_b;
- System.err.println("max: " + m_max);
- }
-
- /** Converts from RGBE to floating-point RGB data. */
- public void convert() {
- m_floatdata = new float [m_width*m_height*3];
-
- int src = 0;
- int dest = 0;
- float[] rgb = new float[3];
- for(int i=0; i<m_width*m_height; i++) {
- RGBE.rgbe2float(rgb, m_data, src);
-
- m_floatdata[dest++] = remap(rgb[0], m_max);
- m_floatdata[dest++] = remap(rgb[1], m_max);
- m_floatdata[dest++] = remap(rgb[2], m_max);
-
- src += 4;
- }
- }
-
- public int create2DTextureRGBE(GL gl, int targetTextureType) {
- m_target = targetTextureType;
- int[] tmp = new int[1];
- gl.glGenTextures(1, tmp, 0);
- int texid = tmp[1];
-
- gl.glBindTexture(m_target, texid);
-
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP_TO_EDGE);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP_TO_EDGE);
-
- gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
- gl.glTexParameteri(m_target, GL.GL_GENERATE_MIPMAP_SGIS, GL.GL_TRUE);
- gl.glTexImage2D(m_target, 0, GL.GL_RGBA, m_width, m_height, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, ByteBuffer.wrap(m_data));
-
- return texid;
- }
-
- public int create2DTextureHILO(GL gl, int targetTextureType, boolean rg) {
- m_target = targetTextureType;
- int[] tmp = new int[1];
- gl.glGenTextures(1, tmp, 0);
- int texid = tmp[0];
-
- gl.glBindTexture(m_target, texid);
-
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP_TO_EDGE);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP_TO_EDGE);
-
- gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
- gl.glTexParameteri(m_target, GL.GL_GENERATE_MIPMAP_SGIS, GL.GL_TRUE);
-
- float[] img = new float [m_width * m_height * 2];
- int src = 0;
- int dest = 0;
- for (int j=0; j<m_height; j++) {
- for (int i=0; i<m_width; i++) {
- if (rg) {
- img[dest++] = m_floatdata[src + 0];
- img[dest++] = m_floatdata[src + 1];
- } else {
- img[dest++] = m_floatdata[src + 2];
- img[dest++] = 0;
- }
- src+=3;
- }
- }
-
- gl.glTexImage2D(m_target, 0, GL.GL_HILO16_NV, m_width, m_height, 0, GL.GL_HILO_NV, GL.GL_FLOAT, FloatBuffer.wrap(img));
-
- return texid;
- }
-
- // create a cubemap texture from a 2D image in cross format (thanks to Jonathon McGee)
- public int createCubemapRGBE(GL gl) {
- // cross is 3 faces wide, 4 faces high
- int face_width = m_width / 3;
- int face_height = m_height / 4;
- byte[] face = new byte[face_width * face_height * 4];
-
- m_target = GL.GL_TEXTURE_CUBE_MAP;
- int[] tmp = new int[1];
- gl.glGenTextures(1, tmp, 0);
- int texid = tmp[0];
- gl.glBindTexture(m_target, texid);
-
- gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
- gl.glTexParameteri(m_target, GL.GL_GENERATE_MIPMAP_SGIS, GL.GL_TRUE);
-
- // gl.glTexParameteri(m_target, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
- // gl.glTexParameteri(m_target, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR_MIPMAP_LINEAR);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP_TO_EDGE);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP_TO_EDGE);
-
- // extract 6 faces
-
- // positive Y
- int ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelIndex(2 * face_width - (i + 1), 3 * face_height + j);
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, GL.GL_RGBA, face_width, face_height, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, ByteBuffer.wrap(face));
-
- // positive X
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelIndex(i, m_height - (face_height + j + 1));
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, GL.GL_RGBA, face_width, face_height, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, ByteBuffer.wrap(face));
-
- // negative Z
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelIndex(face_width + i, m_height - (face_height + j + 1));
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, GL.GL_RGBA, face_width, face_height, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, ByteBuffer.wrap(face));
-
- // negative X
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelIndex(2 * face_width + i, m_height - (face_height + j + 1));
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, GL.GL_RGBA, face_width, face_height, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, ByteBuffer.wrap(face));
-
- // negative Y
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelIndex(2 * face_width - (i + 1), face_height + j);
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, GL.GL_RGBA, face_width, face_height, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, ByteBuffer.wrap(face));
-
- // positive Z
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelIndex(2 * face_width - (i + 1), j);
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- face[ptr++] = m_data[src++];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, GL.GL_RGBA, face_width, face_height, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, ByteBuffer.wrap(face));
-
- return texid;
- }
-
- public int createCubemapHILO(GL gl, boolean rg) {
- // cross is 3 faces wide, 4 faces high
- int face_width = m_width / 3;
- int face_height = m_height / 4;
- float[] face = new float [face_width * face_height * 2];
-
- m_target = GL.GL_TEXTURE_CUBE_MAP;
- int[] tmp = new int[1];
- gl.glGenTextures(1, tmp, 0);
- int texid = tmp[0];
- gl.glBindTexture(m_target, texid);
-
- gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
- gl.glTexParameteri(m_target, GL.GL_GENERATE_MIPMAP_SGIS, GL.GL_TRUE);
-
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR_MIPMAP_LINEAR);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP_TO_EDGE);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP_TO_EDGE);
-
- // extract 6 faces
-
- // positive Y
- int ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(2 * face_width - (i + 1), 3 * face_height + j);
- if (rg) {
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- } else {
- face[ptr++] = m_floatdata[src + 2];
- face[ptr++] = 0;
- }
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, GL.GL_HILO16_NV, face_width, face_height, 0, GL.GL_HILO_NV, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // positive X
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(i, m_height - (face_height + j + 1));
- if (rg) {
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- } else {
- face[ptr++] = m_floatdata[src + 2];
- face[ptr++] = 0;
- }
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, GL.GL_HILO16_NV, face_width, face_height, 0, GL.GL_HILO_NV, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // negative Z
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(face_width + i, m_height - (face_height + j + 1));
- if (rg) {
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- } else {
- face[ptr++] = m_floatdata[src + 2];
- face[ptr++] = 0;
- }
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, GL.GL_HILO16_NV, face_width, face_height, 0, GL.GL_HILO_NV, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // negative X
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(2 * face_width + i, m_height - (face_height + j + 1));
- if (rg) {
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- } else {
- face[ptr++] = m_floatdata[src + 2];
- face[ptr++] = 0;
- }
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, GL.GL_HILO16_NV, face_width, face_height, 0, GL.GL_HILO_NV, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // negative Y
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(2 * face_width - (i + 1), face_height + j);
- if (rg) {
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- } else {
- face[ptr++] = m_floatdata[src + 2];
- face[ptr++] = 0;
- }
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, GL.GL_HILO16_NV, face_width, face_height, 0, GL.GL_HILO_NV, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // positive Z
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(2 * face_width - (i + 1), j);
- if (rg) {
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- } else {
- face[ptr++] = m_floatdata[src + 2];
- face[ptr++] = 0;
- }
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, GL.GL_HILO16_NV, face_width, face_height, 0, GL.GL_HILO_NV, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- return texid;
- }
-
- public int createCubemap(GL gl, int format) {
- // cross is 3 faces wide, 4 faces high
- int face_width = m_width / 3;
- int face_height = m_height / 4;
- float[] face = new float [face_width * face_height * 3];
-
- m_target = GL.GL_TEXTURE_CUBE_MAP;
- int[] tmp = new int[1];
- gl.glGenTextures(1, tmp, 0);
- int texid = tmp[0];
- gl.glBindTexture(m_target, texid);
-
- gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
- gl.glTexParameteri(m_target, GL.GL_GENERATE_MIPMAP_SGIS, GL.GL_TRUE);
-
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR_MIPMAP_LINEAR);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP_TO_EDGE);
- gl.glTexParameteri(m_target, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP_TO_EDGE);
-
- // extract 6 faces
-
- // positive Y
- int ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(2 * face_width - (i + 1), 3 * face_height + j);
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- face[ptr++] = m_floatdata[src + 2];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, format, face_width, face_height, 0, GL.GL_RGB, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // positive X
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(i, m_height - (face_height + j + 1));
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- face[ptr++] = m_floatdata[src + 2];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, format, face_width, face_height, 0, GL.GL_RGB, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // negative Z
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(face_width + i, m_height - (face_height + j + 1));
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- face[ptr++] = m_floatdata[src + 2];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, format, face_width, face_height, 0, GL.GL_RGB, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // negative X
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(2 * face_width + i, m_height - (face_height + j + 1));
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- face[ptr++] = m_floatdata[src + 2];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, format, face_width, face_height, 0, GL.GL_RGB, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // negative Y
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(2 * face_width - (i + 1), face_height + j);
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- face[ptr++] = m_floatdata[src + 2];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, format, face_width, face_height, 0, GL.GL_RGB, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- // positive Z
- ptr = 0;
- for (int j=0; j<face_height; j++) {
- for (int i=0; i<face_width; i++) {
- int src = getPixelFloatIndex(2 * face_width - (i + 1), j);
- face[ptr++] = m_floatdata[src + 0];
- face[ptr++] = m_floatdata[src + 1];
- face[ptr++] = m_floatdata[src + 2];
- }
- }
- gl.glTexImage2D(GL.GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, format, face_width, face_height, 0, GL.GL_RGB, GL.GL_FLOAT, FloatBuffer.wrap(face));
-
- return texid;
- }
-
- //----------------------------------------------------------------------
- // Internals only below this point
- //
-
- private static float remap(float x, float max) {
- if (x > max) x = max;
- return (float) Math.sqrt(x / max);
- }
-
- public static void main(String[] args) {
- for (int i = 0; i < args.length; i++) {
- try {
- HDRTexture tex = new HDRTexture(args[i]);
- tex.analyze();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
-}
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