@Override
public void glGetShaderiv(int shader, int pname, IntBuffer params) {
if (pname == GL20.GL_COMPILE_STATUS || pname == GL20.GL_DELETE_STATUS) {
boolean result = gl.getShaderParameterb(shaders.get(shader), pname);
params.put(result ? GL20.GL_TRUE : GL20.GL_FALSE);
} else {
int result = gl.getShaderParameteri(shaders.get(shader), pname);
params.put(result);
}
}
@Override
public void glBufferSubData(int target, int offset, int size, Buffer data) {
if (data instanceof FloatBuffer) {
gl.bufferSubData(target, offset, copy((FloatBuffer) data));
} else if (data instanceof ShortBuffer) {
gl.bufferSubData(target, offset, copy((ShortBuffer) data));
} else {
throw new GdxRuntimeException("Can only cope with FloatBuffer and ShortBuffer at the moment");
}
}
@Override
public void glGetProgramiv(int program, int pname, IntBuffer params) {
if (pname == GL20.GL_DELETE_STATUS
|| pname == GL20.GL_LINK_STATUS
|| pname == GL20.GL_VALIDATE_STATUS) {
boolean result = gl.getProgramParameterb(programs.get(program), pname);
params.put(result ? GL20.GL_TRUE : GL20.GL_FALSE);
} else {
params.put(gl.getProgramParameteri(programs.get(program), pname));
}
}
@Override
public String glGetActiveUniform(int program, int index, IntBuffer size, Buffer type) {
WebGLActiveInfo activeUniform = gl.getActiveUniform(programs.get(program), index);
size.put(activeUniform.getSize());
((IntBuffer) type).put(activeUniform.getType());
return activeUniform.getName();
}
@Override
public void glReadPixels(
int x, int y, int width, int height, int format, int type, Buffer pixels) {
// verify request
if ((format != WebGLRenderingContext.RGBA) || (type != WebGLRenderingContext.UNSIGNED_BYTE)) {
throw new GdxRuntimeException(
"Only format RGBA and type UNSIGNED_BYTE are currently supported for glReadPixels(...).");
}
if (!(pixels instanceof ByteBuffer)) {
throw new GdxRuntimeException(
"Inputed pixels buffer needs to be of type ByteBuffer for glReadPixels(...).");
}
// create new ArrayBufferView (4 bytes per pixel)
int size = 4 * width * height;
Uint8Array buffer = Uint8ArrayNative.create(size);
// read bytes to ArrayBufferView
gl.readPixels(x, y, width, height, format, type, buffer);
// copy ArrayBufferView to our pixels array
ByteBuffer pixelsByte = (ByteBuffer) pixels;
for (int i = 0; i < size; i++) {
pixelsByte.put((byte) (buffer.get(i) & 0x000000ff));
}
}
@Override
public void glGenRenderbuffers(int n, IntBuffer renderbuffers) {
for (int i = 0; i < n; i++) {
WebGLRenderbuffer rb = gl.createRenderbuffer();
int id = allocateRenderBufferId(rb);
renderbuffers.put(id);
}
}
@Override
public void glGenFramebuffers(int n, IntBuffer framebuffers) {
for (int i = 0; i < n; i++) {
WebGLFramebuffer fb = gl.createFramebuffer();
int id = allocateFrameBufferId(fb);
framebuffers.put(id);
}
}
@Override
public void glGenBuffers(int n, IntBuffer buffers) {
for (int i = 0; i < n; i++) {
WebGLBuffer buffer = gl.createBuffer();
int id = allocateBufferId(buffer);
buffers.put(id);
}
}
@Override
public void glDrawElements(int mode, int count, int type, Buffer indices) {
gl.drawElements(
mode,
count,
type,
indices.position()); // FIXME this is assuming WebGL supports client side buffers...
}
@Override
public void glDeleteRenderbuffers(int n, IntBuffer renderbuffers) {
for (int i = 0; i < n; i++) {
int id = renderbuffers.get();
WebGLRenderbuffer rb = this.renderBuffers.get(id);
deallocateRenderBufferId(id);
gl.deleteRenderbuffer(rb);
}
}
@Override
public void glDeleteFramebuffers(int n, IntBuffer framebuffers) {
for (int i = 0; i < n; i++) {
int id = framebuffers.get();
WebGLFramebuffer fb = this.frameBuffers.get(id);
deallocateFrameBufferId(id);
gl.deleteFramebuffer(fb);
}
}
@Override
public void glDeleteBuffers(int n, IntBuffer buffers) {
for (int i = 0; i < n; i++) {
int id = buffers.get();
WebGLBuffer buffer = this.buffers.get(id);
deallocateBufferId(id);
gl.deleteBuffer(buffer);
}
}
@Override
public void glDeleteTextures(int n, IntBuffer textures) {
for (int i = 0; i < n; i++) {
int id = textures.get();
WebGLTexture texture = this.textures.get(id);
deallocateTextureId(id);
gl.deleteTexture(texture);
}
}
public GwtRenderingContext(Panel root, GwtAppConfiguration config)
throws ParallaxRuntimeException {
this.root = root;
root.clear();
Canvas canvasWidget = Canvas.createIfSupported();
if (canvasWidget == null) throw new ParallaxRuntimeException("Canvas not supported");
int width = root.getOffsetWidth();
int height = root.getOffsetHeight();
if (width == 0 || height == 0)
new ParallaxRuntimeException("Width or Height of the Panel is 0");
lastWidth = width;
lastHeight = height;
canvas = canvasWidget.getCanvasElement();
root.add(canvasWidget);
canvas.setWidth(width);
canvas.setHeight(height);
this.config = config;
WebGLContextAttributes attributes = WebGLContextAttributes.create();
attributes.setAntialias(config.antialiasing);
attributes.setStencil(config.stencil);
attributes.setAlpha(config.alpha);
attributes.setPremultipliedAlpha(config.premultipliedAlpha);
attributes.setPreserveDrawingBuffer(config.preserveDrawingBuffer);
context = WebGLRenderingContext.getContext(canvas, attributes);
context.viewport(0, 0, width, height);
gl = new GwtGL20(context);
renderer = new GLRenderer(gl, width, height);
input = new GwtInput(canvas);
addEventListeners();
Window.addResizeHandler(this);
}
public GwtGraphics(Panel root, GwtApplicationConfiguration config) {
Canvas canvasWidget = Canvas.createIfSupported();
if (canvasWidget == null) throw new GdxRuntimeException("Canvas not supported");
canvas = canvasWidget.getCanvasElement();
root.add(canvasWidget);
canvas.setWidth(config.width);
canvas.setHeight(config.height);
this.config = config;
WebGLContextAttributes attributes = WebGLContextAttributes.create();
attributes.setAntialias(config.antialiasing);
attributes.setStencil(config.stencil);
attributes.setAlpha(false);
attributes.setPremultipliedAlpha(false);
attributes.setPreserveDrawingBuffer(config.preserveDrawingBuffer);
context = WebGLRenderingContext.getContext(canvas, attributes);
context.viewport(0, 0, config.width, config.height);
this.gl = config.useDebugGL ? new GwtGL20Debug(context) : new GwtGL20(context);
}
@Override
public void glTexSubImage2D(
int target,
int level,
int xoffset,
int yoffset,
int width,
int height,
int format,
int type,
Buffer pixels) {
Pixmap pixmap = Pixmap.pixmaps.get(((IntBuffer) pixels).get(0));
gl.texSubImage2D(target, level, xoffset, yoffset, width, height, pixmap.getCanvasElement());
}
@Override
public void glTexImage2D(
int target,
int level,
int internalformat,
int width,
int height,
int border,
int format,
int type,
Buffer pixels) {
Pixmap pixmap = Pixmap.pixmaps.get(((IntBuffer) pixels).get(0));
gl.texImage2D(target, level, internalformat, format, type, pixmap.getCanvasElement());
}
HtmlSurfaceLayerGL(HtmlGraphicsGL gfx, int width, int height) {
super(gfx);
this.width = width;
this.height = height;
gfx.flush();
WebGLRenderingContext gl = gfx.gl;
tex = gfx.createTexture(false, false);
gl.texImage2D(TEXTURE_2D, 0, RGBA, width, height, 0, RGBA, UNSIGNED_BYTE, null);
fbuf = gl.createFramebuffer();
gl.bindFramebuffer(FRAMEBUFFER, fbuf);
gl.framebufferTexture2D(FRAMEBUFFER, COLOR_ATTACHMENT0, TEXTURE_2D, tex, 0);
gl.bindTexture(TEXTURE_2D, null);
gfx.bindFramebuffer();
surface = new HtmlSurfaceGL(gfx, fbuf, width, height);
}
@Override
public void glUniform3i(int location, int x, int y, int z) {
WebGLUniformLocation loc = getUniformLocation(location);
gl.uniform3i(loc, x, y, z);
}
@Override
public void glUniform3f(int location, float x, float y, float z) {
WebGLUniformLocation loc = getUniformLocation(location);
gl.uniform3f(loc, x, y, z);
}
@Override
public void glUniform3fv(int location, int count, FloatBuffer v) {
WebGLUniformLocation loc = getUniformLocation(location);
gl.uniform3fv(loc, copy(v));
}
@Override
public void glTexParameteriv(int target, int pname, IntBuffer params) {
gl.texParameterf(target, pname, params.get());
}
@Override
public void glUniform1i(int location, int x) {
WebGLUniformLocation loc = getUniformLocation(location);
gl.uniform1i(loc, x);
}
@Override
public void glStencilOpSeparate(int face, int fail, int zfail, int zpass) {
gl.stencilOpSeparate(face, fail, zfail, zpass);
}
@Override
public void glTexParameteri(int target, int pname, int param) {
gl.texParameterf(target, pname, param);
}
@Override
public void glStencilMaskSeparate(int face, int mask) {
gl.stencilMaskSeparate(face, mask);
}
@Override
public void glStencilFuncSeparate(int face, int func, int ref, int mask) {
gl.stencilFuncSeparate(face, func, ref, mask);
}
@Override
public void glShaderSource(int shader, String source) {
gl.shaderSource(shaders.get(shader), source);
}
@Override
public void glSampleCoverage(float value, boolean invert) {
gl.sampleCoverage(value, invert);
}
@Override
public void glRenderbufferStorage(int target, int internalformat, int width, int height) {
gl.renderbufferStorage(target, internalformat, width, height);
}