public void setOrthographicView(int w, int h) {
gl.glViewport(0, 0, w, h);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluOrtho2D(0.0, w, 0.0, h);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
}
public void display(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
gl.glRasterPos2i(1, 1);
gl.glDrawPixels(
dim.width,
dim.height, //
GL.GL_RGB,
GL.GL_UNSIGNED_BYTE,
pixels);
gl.glFlush();
}
public GLState(GL gl) {
if (INSTANCES_COUNT == 0) {
GLState.gl = gl;
glTextureObjects = new HashSet<Integer>();
glVertexBuffers = new HashSet<Integer>();
glFrameBuffers = new HashSet<Integer>();
glRenderBuffers = new HashSet<Integer>();
glslPrograms = new HashSet<Integer>();
glslShaders = new HashSet<Integer>();
cgContexts = new HashSet<Object>();
cgPrograms = new HashSet<Object>();
cgEffects = new HashSet<Object>();
getVersionNumbers();
getAvailableExtensions();
int[] val = {0};
gl.glGetIntegerv(GL.GL_MAX_COLOR_ATTACHMENTS_EXT, val, 0);
glMaxColorAttach = val[0];
glu = new GLU();
FBO = new GLFramebufferObject(gl);
fboStack = new Stack<GLFramebufferObject>();
destTexStack = new Stack<GLTexture[]>();
screenFBO = new GLFramebufferObject(gl, true);
currentFBO = screenFBO;
emptyDestTex = new GLTexture[0];
currentDestTex = emptyDestTex;
singleFBO = false;
}
INSTANCES_COUNT++;
}
public void clearColorBuffer(int color) {
float r, g, b, a;
int ir, ig, ib, ia;
ia = (color >> 24) & 0xff;
ir = (color >> 16) & 0xff;
ig = (color >> 8) & 0xff;
ib = color & 0xff;
a = ia / 255.0f;
r = ir / 255.0f;
g = ig / 255.0f;
b = ib / 255.0f;
gl.glClearColor(r, g, b, a);
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
}
public void paintTex(int glid, int target, int w, int h, int color) {
float r, g, b, a;
int ir, ig, ib, ia;
ia = (color >> 24) & 0xff;
ir = (color >> 16) & 0xff;
ig = (color >> 8) & 0xff;
ib = color & 0xff;
a = ia / 255.0f;
r = ir / 255.0f;
g = ig / 255.0f;
b = ib / 255.0f;
pushFramebuffer();
setFramebuffer(FBO);
FBO.setDrawBuffer(target, glid);
saveView();
setOrthographicView(w, h);
gl.glColor4f(r, g, b, a);
gl.glBegin(GL.GL_QUADS);
gl.glVertex2f(0.0f, 0.0f);
gl.glVertex2f(w, 0.0f);
gl.glVertex2f(w, h);
gl.glVertex2f(0.0f, h);
gl.glEnd();
restoreView();
popFramebuffer();
}
private void checkCompressedTextureExtensions(TextureData data) {
GL gl = GLU.getCurrentGL();
if (data.isDataCompressed()) {
switch (data.getInternalFormat()) {
case GL.GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL.GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL.GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL.GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
if (!gl.isExtensionAvailable("GL_EXT_texture_compression_s3tc")
&& !gl.isExtensionAvailable("GL_NV_texture_compression_vtc")) {
throw new GLException("DXTn compressed textures not supported by this graphics card");
}
break;
default:
// FIXME: should test availability of more texture
// compression extensions here
break;
}
}
}
public static int createGLResource(int type, int param) {
int id = 0;
if (type == GL_TEXTURE_OBJECT) {
int[] temp = new int[1];
gl.glGenTextures(1, temp, 0);
id = temp[0];
glTextureObjects.add(id);
} else if (type == GL_VERTEX_BUFFER) {
int[] temp = new int[1];
gl.glGenBuffersARB(1, temp, 0);
id = temp[0];
glVertexBuffers.add(id);
} else if (type == GL_FRAME_BUFFER) {
int[] temp = new int[1];
gl.glGenFramebuffersEXT(1, temp, 0);
id = temp[0];
glFrameBuffers.add(id);
} else if (type == GL_RENDER_BUFFER) {
int[] temp = new int[1];
gl.glGenRenderbuffersEXT(1, temp, 0);
id = temp[0];
glRenderBuffers.add(id);
} else if (type == GLSL_PROGRAM) {
id = gl.glCreateProgram();
glslPrograms.add(id);
} else if (type == GLSL_SHADER) {
id = gl.glCreateShader(param);
glslShaders.add(id);
}
return id;
}
public void clearTex(int glid, int target, int color) {
float r, g, b, a;
int ir, ig, ib, ia;
ia = (color >> 24) & 0xff;
ir = (color >> 16) & 0xff;
ig = (color >> 8) & 0xff;
ib = color & 0xff;
a = ia / 255.0f;
r = ir / 255.0f;
g = ig / 255.0f;
b = ib / 255.0f;
pushFramebuffer();
setFramebuffer(FBO);
FBO.setDrawBuffer(target, glid);
gl.glClearColor(r, g, b, a);
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
popFramebuffer();
}
public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h) {
GL gl = drawable.getGL();
gl.glViewport(0, 0, w, h);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
gl.glOrtho(0, w, 0, h, -1.0, 1.0);
gl.glMatrixMode(GL.GL_MODELVIEW);
}
public void init(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
float m[] = {
0.0f, 1.0f, 0.0f, 0.0f, //
0.0f, 0.0f, 1.0f, 0.0f, //
1.0f, 0.0f, 0.0f, 0.0f, //
0.0f, 0.0f, 0.0f, 1.0f
};
pixels = readImage("Data/leeds.bin", dim);
System.out.println(pixels.toString());
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
gl.glMatrixMode(GL.GL_COLOR);
gl.glLoadMatrixf(m, 0);
gl.glMatrixMode(GL.GL_MODELVIEW);
}
public static void deleteGLResource(int id, int type) {
if (type == GL_TEXTURE_OBJECT) {
if (glTextureObjects.contains(id)) {
int[] temp = {id};
gl.glDeleteTextures(1, temp, 0);
glTextureObjects.remove(id);
}
} else if (type == GL_VERTEX_BUFFER) {
if (glVertexBuffers.contains(id)) {
int[] temp = {id};
gl.glDeleteBuffersARB(1, temp, 0);
glVertexBuffers.remove(id);
}
} else if (type == GL_FRAME_BUFFER) {
if (glFrameBuffers.contains(id)) {
int[] temp = {id};
gl.glDeleteFramebuffersEXT(1, temp, 0);
glFrameBuffers.remove(id);
}
} else if (type == GL_RENDER_BUFFER) {
if (glRenderBuffers.contains(id)) {
int[] temp = {id};
gl.glDeleteRenderbuffersEXT(1, temp, 0);
glRenderBuffers.remove(id);
}
} else if (type == GLSL_PROGRAM) {
if (glslPrograms.contains(id)) {
gl.glDeleteProgram(id);
glslPrograms.remove(id);
}
} else if (type == GLSL_SHADER) {
if (glslShaders.contains(id)) {
gl.glDeleteShader(id);
glslShaders.remove(id);
}
}
}
/**
* Sets the OpenGL multi-integer texture parameter for the texture's target. Causes this texture
* to be bound to the current texture state.
*
* @throws GLException if no OpenGL context was current or if any OpenGL-related errors occurred
*/
public void setTexParameteriv(int parameterName, IntBuffer params) {
bind();
GL gl = GLU.getCurrentGL();
gl.glTexParameteriv(target, parameterName, params);
}
/**
* Sets the OpenGL integer texture parameter for the texture's target. This gives control over
* parameters such as GL_TEXTURE_WRAP_S and GL_TEXTURE_WRAP_T, which by default are set to
* GL_CLAMP_TO_EDGE if OpenGL 1.2 is supported on the current platform and GL_CLAMP if not. Causes
* this texture to be bound to the current texture state.
*
* @throws GLException if no OpenGL context was current or if any OpenGL-related errors occurred
*/
public void setTexParameteri(int parameterName, int value) {
bind();
GL gl = GLU.getCurrentGL();
gl.glTexParameteri(target, parameterName, value);
}
/**
* Updates the content area of the specified target of this texture using the data in the given
* image. In general this is intended for construction of cube maps.
*
* @throws GLException if no OpenGL context was current or if any OpenGL-related errors occurred
*/
public void updateImage(TextureData data, int target) throws GLException {
GL gl = GLU.getCurrentGL();
imgWidth = data.getWidth();
imgHeight = data.getHeight();
aspectRatio = (float) imgWidth / (float) imgHeight;
mustFlipVertically = data.getMustFlipVertically();
int texTarget = 0;
int texParamTarget = this.target;
// See whether we have automatic mipmap generation support
boolean haveAutoMipmapGeneration =
(gl.isExtensionAvailable("GL_VERSION_1_4")
|| gl.isExtensionAvailable("GL_SGIS_generate_mipmap"));
// Indicate to the TextureData what functionality is available
data.setHaveEXTABGR(gl.isExtensionAvailable("GL_EXT_abgr"));
data.setHaveGL12(gl.isExtensionAvailable("GL_VERSION_1_2"));
// Note that automatic mipmap generation doesn't work for
// GL_ARB_texture_rectangle
if ((!isPowerOfTwo(imgWidth) || !isPowerOfTwo(imgHeight)) && !haveNPOT(gl)) {
haveAutoMipmapGeneration = false;
}
boolean expandingCompressedTexture = false;
if (data.getMipmap() && !haveAutoMipmapGeneration) {
// GLU always scales the texture's dimensions to be powers of
// two. It also doesn't really matter exactly what the texture
// width and height are because the texture coords are always
// between 0.0 and 1.0.
imgWidth = nextPowerOfTwo(imgWidth);
imgHeight = nextPowerOfTwo(imgHeight);
texWidth = imgWidth;
texHeight = imgHeight;
texTarget = GL.GL_TEXTURE_2D;
} else if ((isPowerOfTwo(imgWidth) && isPowerOfTwo(imgHeight)) || haveNPOT(gl)) {
if (DEBUG) {
if (isPowerOfTwo(imgWidth) && isPowerOfTwo(imgHeight)) {
System.err.println("Power-of-two texture");
} else {
System.err.println("Using GL_ARB_texture_non_power_of_two");
}
}
texWidth = imgWidth;
texHeight = imgHeight;
texTarget = GL.GL_TEXTURE_2D;
} else if (haveTexRect(gl) && !data.isDataCompressed()) {
// GL_ARB_texture_rectangle does not work for compressed textures
if (DEBUG) {
System.err.println("Using GL_ARB_texture_rectangle");
}
texWidth = imgWidth;
texHeight = imgHeight;
texTarget = GL.GL_TEXTURE_RECTANGLE_ARB;
} else {
// If we receive non-power-of-two compressed texture data and
// don't have true hardware support for compressed textures, we
// can fake this support by producing an empty "compressed"
// texture image, using glCompressedTexImage2D with that to
// allocate the texture, and glCompressedTexSubImage2D with the
// incoming data.
if (data.isDataCompressed()) {
if (data.getMipmapData() != null) {
// We don't currently support expanding of compressed,
// mipmapped non-power-of-two textures to the nearest power
// of two; the obvious port of the non-mipmapped code didn't
// work
throw new GLException(
"Mipmapped non-power-of-two compressed textures only supported on OpenGL 2.0 hardware (GL_ARB_texture_non_power_of_two)");
}
expandingCompressedTexture = true;
}
if (DEBUG) {
System.err.println("Expanding texture to power-of-two dimensions");
}
if (data.getBorder() != 0) {
throw new RuntimeException(
"Scaling up a non-power-of-two texture which has a border won't work");
}
texWidth = nextPowerOfTwo(imgWidth);
texHeight = nextPowerOfTwo(imgHeight);
texTarget = GL.GL_TEXTURE_2D;
}
texParamTarget = texTarget;
setImageSize(imgWidth, imgHeight, texTarget);
if (target != 0) {
// Allow user to override auto detection and skip bind step (for
// cubemap construction)
texTarget = target;
if (this.target == 0) {
throw new GLException("Override of target failed; no target specified yet");
}
texParamTarget = this.target;
gl.glBindTexture(texParamTarget, texID);
} else {
gl.glBindTexture(texTarget, texID);
}
if (data.getMipmap() && !haveAutoMipmapGeneration) {
int[] align = new int[1];
gl.glGetIntegerv(GL.GL_UNPACK_ALIGNMENT, align, 0); // save alignment
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, data.getAlignment());
if (data.isDataCompressed()) {
throw new GLException("May not request mipmap generation for compressed textures");
}
try {
GLU glu = new GLU();
glu.gluBuild2DMipmaps(
texTarget,
data.getInternalFormat(),
data.getWidth(),
data.getHeight(),
data.getPixelFormat(),
data.getPixelType(),
data.getBuffer());
} finally {
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, align[0]); // restore alignment
}
} else {
checkCompressedTextureExtensions(data);
Buffer[] mipmapData = data.getMipmapData();
if (mipmapData != null) {
int width = texWidth;
int height = texHeight;
for (int i = 0; i < mipmapData.length; i++) {
if (data.isDataCompressed()) {
// Need to use glCompressedTexImage2D directly to allocate and fill this image
// Avoid spurious memory allocation when possible
gl.glCompressedTexImage2D(
texTarget,
i,
data.getInternalFormat(),
width,
height,
data.getBorder(),
mipmapData[i].remaining(),
mipmapData[i]);
} else {
// Allocate texture image at this level
gl.glTexImage2D(
texTarget,
i,
data.getInternalFormat(),
width,
height,
data.getBorder(),
data.getPixelFormat(),
data.getPixelType(),
null);
updateSubImageImpl(data, texTarget, i, 0, 0, 0, 0, data.getWidth(), data.getHeight());
}
width = Math.max(width / 2, 1);
height = Math.max(height / 2, 1);
}
} else {
if (data.isDataCompressed()) {
if (!expandingCompressedTexture) {
// Need to use glCompressedTexImage2D directly to allocate and fill this image
// Avoid spurious memory allocation when possible
gl.glCompressedTexImage2D(
texTarget,
0,
data.getInternalFormat(),
texWidth,
texHeight,
data.getBorder(),
data.getBuffer().capacity(),
data.getBuffer());
} else {
ByteBuffer buf =
DDSImage.allocateBlankBuffer(texWidth, texHeight, data.getInternalFormat());
gl.glCompressedTexImage2D(
texTarget,
0,
data.getInternalFormat(),
texWidth,
texHeight,
data.getBorder(),
buf.capacity(),
buf);
updateSubImageImpl(data, texTarget, 0, 0, 0, 0, 0, data.getWidth(), data.getHeight());
}
} else {
if (data.getMipmap() && haveAutoMipmapGeneration) {
// For now, only use hardware mipmapping for uncompressed 2D
// textures where the user hasn't explicitly specified
// mipmap data; don't know about interactions between
// GL_GENERATE_MIPMAP and glCompressedTexImage2D
gl.glTexParameteri(texParamTarget, GL.GL_GENERATE_MIPMAP, GL.GL_TRUE);
usingAutoMipmapGeneration = true;
}
gl.glTexImage2D(
texTarget,
0,
data.getInternalFormat(),
texWidth,
texHeight,
data.getBorder(),
data.getPixelFormat(),
data.getPixelType(),
null);
updateSubImageImpl(data, texTarget, 0, 0, 0, 0, 0, data.getWidth(), data.getHeight());
}
}
}
int minFilter = (data.getMipmap() ? GL.GL_LINEAR_MIPMAP_LINEAR : GL.GL_LINEAR);
int magFilter = GL.GL_LINEAR;
int wrapMode = (gl.isExtensionAvailable("GL_VERSION_1_2") ? GL.GL_CLAMP_TO_EDGE : GL.GL_CLAMP);
// REMIND: figure out what to do for GL_TEXTURE_RECTANGLE_ARB
if (texTarget != GL.GL_TEXTURE_RECTANGLE_ARB) {
gl.glTexParameteri(texParamTarget, GL.GL_TEXTURE_MIN_FILTER, minFilter);
gl.glTexParameteri(texParamTarget, GL.GL_TEXTURE_MAG_FILTER, magFilter);
gl.glTexParameteri(texParamTarget, GL.GL_TEXTURE_WRAP_S, wrapMode);
gl.glTexParameteri(texParamTarget, GL.GL_TEXTURE_WRAP_T, wrapMode);
if (this.target == GL.GL_TEXTURE_CUBE_MAP) {
gl.glTexParameteri(texParamTarget, GL.GL_TEXTURE_WRAP_R, wrapMode);
}
}
// Don't overwrite target if we're loading e.g. faces of a cube
// map
if ((this.target == 0)
|| (this.target == GL.GL_TEXTURE_2D)
|| (this.target == GL.GL_TEXTURE_RECTANGLE_ARB)) {
this.target = texTarget;
}
// This estimate will be wrong for cube maps
estimatedMemorySize = data.getEstimatedMemorySize();
}
private static boolean haveTexRect(GL gl) {
return (!disableTexRect
&& TextureIO.isTexRectEnabled()
&& gl.isExtensionAvailable("GL_ARB_texture_rectangle"));
}
// Helper routines for disabling certain codepaths
private static boolean haveNPOT(GL gl) {
return (!disableNPOT && gl.isExtensionAvailable("GL_ARB_texture_non_power_of_two"));
}
protected void getAvailableExtensions() {
// For a complete list of extensions, go to this sections in the openGL
// registry:
// http://www.opengl.org/registry/#arbextspecs
// http://www.opengl.org/registry/#otherextspecs
String extensions = gl.glGetString(GL.GL_EXTENSIONS);
if (extensions.indexOf("GL_ARB_multitexture") == -1) {
multiTexAvailable = false;
System.out.println("GL_ARB_multitexture extension not available");
}
if (extensions.indexOf("GL_ARB_vertex_buffer_object") == -1) {
vbosAvailable = false;
System.out.println("GL_ARB_vertex_buffer_object extension not available");
}
if (extensions.indexOf("GL_EXT_framebuffer_object") == -1) {
fbosAvailable = false;
System.out.println("GL_EXT_framebuffer_object extension not available");
}
if (extensions.indexOf("GL_ARB_shader_objects") == -1) {
shadersAvailable = false;
System.out.println("GL_ARB_shader_objects extension not available");
}
if (extensions.indexOf("GL_EXT_geometry_shader4") == -1) {
geoShadersAvailable = false;
System.out.println("GL_ARB_geometry_shader4 extension not available");
}
if (extensions.indexOf("GL_ARB_vertex_shader") == -1) {
vertShadersAvailable = false;
System.out.println("GL_ARB_vertex_shader extension not available");
}
if (extensions.indexOf("GL_ARB_fragment_shader") == -1) {
fragShadersAvailable = false;
System.out.println("GL_ARB_fragment_shader extension not available");
}
if (extensions.indexOf("GL_ARB_shading_language_100") == -1) {
glsl100Available = false;
System.out.println("GL_ARB_shading_language_100 extension not available");
}
if (extensions.indexOf("GL_ARB_texture_float") == -1) {
floatTexAvailable = false;
System.out.println("GL_ARB_texture_float extension not available");
}
if (extensions.indexOf("GL_ARB_texture_non_power_of_two") == -1) {
nonTwoPowTexAvailable = false;
System.out.println("GL_ARB_texture_non_power_of_two extension not available");
}
if (extensions.indexOf("GL_EXT_framebuffer_multisample") == -1) {
fboMultisampleAvailable = false;
System.out.println("GL_EXT_framebuffer_multisample extension not available");
}
}
protected void setupDefaultBlending() {
// Default blending mode in PGraphicsOpenGL.
blendMode = BLEND;
gl.glBlendEquation(GL.GL_FUNC_ADD);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
}
protected void getVersionNumbers() {
glVersion = gl.glGetString(GL.GL_VERSION);
glMajor = Character.getNumericValue(glVersion.charAt(0));
glMinor = Character.getNumericValue(glVersion.charAt(2));
glslVersion = gl.glGetString(GL.GL_SHADING_LANGUAGE_VERSION_ARB);
}
public void saveGLState() {
gl.glPushAttrib(GL.GL_ALL_ATTRIB_BITS);
saveGLMatrices();
}
protected void setupBlending(int mode) {
blendMode = mode;
if (blendMode == REPLACE) {
gl.glBlendEquation(GL.GL_FUNC_ADD);
gl.glBlendFunc(GL.GL_ONE, GL.GL_ZERO);
} else if (blendMode == BLEND) {
gl.glBlendEquation(GL.GL_FUNC_ADD);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
} else if (blendMode == ADD) {
gl.glBlendEquation(GL.GL_FUNC_ADD);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE);
} else if (blendMode == SUBTRACT) {
gl.glBlendEquation(GL.GL_FUNC_ADD);
gl.glBlendFunc(GL.GL_ONE_MINUS_DST_COLOR, GL.GL_ZERO);
} else if (blendMode == LIGHTEST) {
gl.glBlendEquation(GL.GL_MAX);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_DST_ALPHA);
} else if (blendMode == DARKEST) {
gl.glBlendEquation(GL.GL_MIN);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_DST_ALPHA);
} else if (blendMode == DIFFERENCE) {
gl.glBlendEquation(GL.GL_FUNC_REVERSE_SUBTRACT);
gl.glBlendFunc(GL.GL_ONE, GL.GL_ONE);
} else if (blendMode == EXCLUSION) {
gl.glBlendEquation(GL.GL_FUNC_ADD);
gl.glBlendFunc(GL.GL_ONE_MINUS_DST_COLOR, GL.GL_ONE_MINUS_SRC_COLOR);
} else if (blendMode == MULTIPLY) {
gl.glBlendEquation(GL.GL_FUNC_ADD);
gl.glBlendFunc(GL.GL_DST_COLOR, GL.GL_SRC_COLOR);
} else if (blendMode == SCREEN) {
gl.glBlendEquation(GL.GL_FUNC_ADD);
gl.glBlendFunc(GL.GL_ONE_MINUS_DST_COLOR, GL.GL_ONE);
} else if (blendMode == BACKGROUND_ALPHA) {
gl.glBlendColor(0.0f, 0.0f, 0.0f, 1.0f);
gl.glBlendFunc(GL.GL_ONE, GL.GL_CONSTANT_COLOR);
}
// HARD_LIGHT, SOFT_LIGHT, OVERLAY, DODGE, BURN modes cannot be implemented
// in fixed-function pipeline because they require conditional blending and
// non-linear blending equations.
}
public void restoreGLState() {
restoreGLMatrices();
gl.glPopAttrib();
}
/**
* Sets the OpenGL multi-integer texture parameter for the texture's target. Causes this texture
* to be bound to the current texture state.
*
* @throws GLException if no OpenGL context was current or if any OpenGL-related errors occurred
*/
public void setTexParameteriv(int parameterName, int[] params, int params_offset) {
bind();
GL gl = GLU.getCurrentGL();
gl.glTexParameteriv(target, parameterName, params, params_offset);
}
public void saveGLMatrices() {
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glPushMatrix();
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glPushMatrix();
}
public void copyTex(GLTexture srcTex, GLTexture destTex) {
float uscale = srcTex.getMaxTextureCoordS();
float vscale = srcTex.getMaxTextureCoordT();
float cx = 0.0f;
float sx = +1.0f;
if (destTex.isFlippedX()) {
cx = 1.0f;
sx = -1.0f;
}
float cy = 0.0f;
float sy = +1.0f;
if (destTex.isFlippedY()) {
cy = 1.0f;
sy = -1.0f;
}
gl.glEnable(srcTex.getTextureTarget());
gl.glActiveTexture(GL.GL_TEXTURE0);
gl.glBindTexture(srcTex.getTextureTarget(), srcTex.getTextureID());
pushFramebuffer();
setFramebuffer(FBO);
FBO.setDrawBuffer(destTex.getTextureTarget(), destTex.getTextureID());
saveView();
setOrthographicView(destTex.width, destTex.height);
gl.glEnable(srcTex.getTextureTarget());
gl.glActiveTexture(GL.GL_TEXTURE0);
gl.glBindTexture(srcTex.getTextureTarget(), srcTex.getTextureID());
gl.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
gl.glBegin(GL.GL_QUADS);
gl.glTexCoord2f((cx + sx * 0.0f) * uscale, (cy + sy * 0.0f) * vscale);
gl.glVertex2f(0.0f, 0.0f);
gl.glTexCoord2f((cx + sx * 1.0f) * uscale, (cy + sy * 0.0f) * vscale);
gl.glVertex2f(srcTex.width, 0.0f);
gl.glTexCoord2f((cx + sx * 1.0f) * uscale, (cy + sy * 1.0f) * vscale);
gl.glVertex2f(srcTex.width, srcTex.height);
gl.glTexCoord2f((cx + sx * 0.0f) * uscale, (cy + sy * 1.0f) * vscale);
gl.glVertex2f(0.0f, srcTex.height);
gl.glEnd();
gl.glBindTexture(srcTex.getTextureTarget(), 0);
restoreView();
popFramebuffer();
}
public void restoreGLMatrices() {
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glPopMatrix();
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glPopMatrix();
}
private void updateSubImageImpl(
TextureData data,
int newTarget,
int mipmapLevel,
int dstx,
int dsty,
int srcx,
int srcy,
int width,
int height)
throws GLException {
GL gl = GLU.getCurrentGL();
data.setHaveEXTABGR(gl.isExtensionAvailable("GL_EXT_abgr"));
data.setHaveGL12(gl.isExtensionAvailable("GL_VERSION_1_2"));
Buffer buffer = data.getBuffer();
if (buffer == null && data.getMipmapData() == null) {
// Assume user just wanted to get the Texture object allocated
return;
}
int rowlen = data.getRowLength();
int dataWidth = data.getWidth();
int dataHeight = data.getHeight();
if (data.getMipmapData() != null) {
// Compute the width, height and row length at the specified mipmap level
// Note we do not support specification of the row length for
// mipmapped textures at this point
for (int i = 0; i < mipmapLevel; i++) {
width = Math.max(width / 2, 1);
height = Math.max(height / 2, 1);
dataWidth = Math.max(dataWidth / 2, 1);
dataHeight = Math.max(dataHeight / 2, 1);
}
rowlen = 0;
buffer = data.getMipmapData()[mipmapLevel];
}
// Clip incoming rectangles to what is available both on this
// texture and in the incoming TextureData
if (srcx < 0) {
width += srcx;
srcx = 0;
}
if (srcy < 0) {
height += srcy;
srcy = 0;
}
// NOTE: not sure whether the following two are the correct thing to do
if (dstx < 0) {
width += dstx;
dstx = 0;
}
if (dsty < 0) {
height += dsty;
dsty = 0;
}
if (srcx + width > dataWidth) {
width = dataWidth - srcx;
}
if (srcy + height > dataHeight) {
height = dataHeight - srcy;
}
if (dstx + width > texWidth) {
width = texWidth - dstx;
}
if (dsty + height > texHeight) {
height = texHeight - dsty;
}
checkCompressedTextureExtensions(data);
if (data.isDataCompressed()) {
gl.glCompressedTexSubImage2D(
newTarget,
mipmapLevel,
dstx,
dsty,
width,
height,
data.getInternalFormat(),
buffer.remaining(),
buffer);
} else {
int[] align = new int[1];
int[] rowLength = new int[1];
int[] skipRows = new int[1];
int[] skipPixels = new int[1];
gl.glGetIntegerv(GL.GL_UNPACK_ALIGNMENT, align, 0); // save alignment
gl.glGetIntegerv(GL.GL_UNPACK_ROW_LENGTH, rowLength, 0); // save row length
gl.glGetIntegerv(GL.GL_UNPACK_SKIP_ROWS, skipRows, 0); // save skipped rows
gl.glGetIntegerv(GL.GL_UNPACK_SKIP_PIXELS, skipPixels, 0); // save skipped pixels
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, data.getAlignment());
if (DEBUG && VERBOSE) {
System.out.println("Row length = " + rowlen);
System.out.println("skip pixels = " + srcx);
System.out.println("skip rows = " + srcy);
System.out.println("dstx = " + dstx);
System.out.println("dsty = " + dsty);
System.out.println("width = " + width);
System.out.println("height = " + height);
}
gl.glPixelStorei(GL.GL_UNPACK_ROW_LENGTH, rowlen);
gl.glPixelStorei(GL.GL_UNPACK_SKIP_ROWS, srcy);
gl.glPixelStorei(GL.GL_UNPACK_SKIP_PIXELS, srcx);
gl.glTexSubImage2D(
newTarget,
mipmapLevel,
dstx,
dsty,
width,
height,
data.getPixelFormat(),
data.getPixelType(),
buffer);
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, align[0]); // restore alignment
gl.glPixelStorei(GL.GL_UNPACK_ROW_LENGTH, rowLength[0]); // restore row length
gl.glPixelStorei(GL.GL_UNPACK_SKIP_ROWS, skipRows[0]); // restore skipped rows
gl.glPixelStorei(GL.GL_UNPACK_SKIP_PIXELS, skipPixels[0]); // restore skipped pixels
}
}
protected void enableBlend() {
blendEnabled = true;
gl.glEnable(GL.GL_BLEND);
}
/**
* Creates a new texture ID.
*
* @param gl the GL object associated with the current OpenGL context
* @return a new texture ID
*/
private static int createTextureID(GL gl) {
int[] tmp = new int[1];
gl.glGenTextures(1, tmp, 0);
return tmp[0];
}
protected void disableBlend() {
blendEnabled = false;
gl.glDisable(GL.GL_BLEND);
}