Java Code Examples for org.lwjgl.opengl.GL11#glGetTexImage()

@Override
public void getFrame(MissionInit missionInit, ByteBuffer buffer)
{
    final int width = getWidth();
    final int height = getHeight();

    // Render the Minecraft frame into our own FBO, at the desired size:
    OpenGlHelper.glUseProgram(shaderID);
    this.fbo.bindFramebuffer(true);
    Minecraft.getMinecraft().getFramebuffer().framebufferRenderExt(width, height, true);
    GlStateManager.bindTexture(this.fbo.framebufferTexture);
    GL11.glGetTexImage(GL11.GL_TEXTURE_2D, 0, GL_RED, GL_UNSIGNED_BYTE, buffer);
    this.fbo.unbindFramebuffer();
    OpenGlHelper.glUseProgram(0);
}
 

/**
 * 
 * @param x x location of the pixel
 * @param y y location of the pixel
 * @param color color in RGBA8
 */
public void setPixel(int x, int y, int color) {
	
	ByteBuffer buffer = BufferUtils.createByteBuffer(image.getHeight() * image.getWidth() * BYTES_PER_PIXEL);;
	
	GL11.glBindTexture(GL11.GL_TEXTURE_2D, getTextureId());
	GL11.glGetTexImage(GL11.GL_TEXTURE_2D,0 , GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, buffer);
	buffer.putInt(x + (y * image.getHeight()), color);
	
	GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, image.getWidth(), image.getHeight(), 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, buffer);
}
 

public static void saveTexture(int mipmap_level, String filename) {
		GL11.glGetTexLevelParameter(GL11.GL_TEXTURE_2D, mipmap_level, GL11.GL_TEXTURE_WIDTH, int_buf);
		int width = int_buf.get(0);
		GL11.glGetTexLevelParameter(GL11.GL_TEXTURE_2D, mipmap_level, GL11.GL_TEXTURE_HEIGHT, int_buf);
		int height = int_buf.get(0);
		GLImage pixel_data = new GLIntImage(width, height, GL11.GL_RGBA);
		GL11.glGetTexImage(GL11.GL_TEXTURE_2D, mipmap_level, pixel_data.getGLFormat(), pixel_data.getGLType(), pixel_data.getPixels());
//		swizzleColors(pixel_data.getPixels());
		com.oddlabs.util.Utils.flip(pixel_data.getPixels(), width*4, height);
		pixel_data.saveAsPNG(filename);
		System.gc();
	}
 

private BufferedImage screenshot() {
    Framebuffer fb = Minecraft.getMinecraft().getFramebuffer();
    Dimension mcSize = GuiDraw.displayRes();
    Dimension texSize = mcSize;

    if (OpenGlHelper.isFramebufferEnabled())
        texSize = new Dimension(fb.framebufferTextureWidth, fb.framebufferTextureHeight);

    int k = texSize.width * texSize.height;
    if (pixelBuffer == null || pixelBuffer.capacity() < k) {
        pixelBuffer = BufferUtils.createIntBuffer(k);
        pixelValues = new int[k];
    }

    GL11.glPixelStorei(GL11.GL_PACK_ALIGNMENT, 1);
    GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
    pixelBuffer.clear();

    if (OpenGlHelper.isFramebufferEnabled()) {
        GlStateManager.bindTexture(fb.framebufferTexture);
        GL11.glGetTexImage(GL11.GL_TEXTURE_2D, 0, GL12.GL_BGRA, GL12.GL_UNSIGNED_INT_8_8_8_8_REV, pixelBuffer);
    } else {
        GL11.glReadPixels(0, 0, texSize.width, texSize.height, GL12.GL_BGRA, GL12.GL_UNSIGNED_INT_8_8_8_8_REV, pixelBuffer);
    }

    pixelBuffer.get(pixelValues);
    TextureUtil.processPixelValues(pixelValues, texSize.width, texSize.height);

    BufferedImage img = new BufferedImage(mcSize.width, mcSize.height, BufferedImage.TYPE_INT_ARGB);
    if (OpenGlHelper.isFramebufferEnabled()) {
        int yOff = texSize.height - mcSize.height;
        for (int y = 0; y < mcSize.height; ++y)
            for (int x = 0; x < mcSize.width; ++x)
                img.setRGB(x, y, pixelValues[(y + yOff) * texSize.width + x]);
    } else {
        img.setRGB(0, 0, texSize.width, height, pixelValues, 0, texSize.width);
    }

    return img;
}
 

private synchronized void getPixelsFromExistingTexture() {
	try {
		this.bind();
		this.pixelBuf.clear();
		GL11.glGetTexImage(GL11.GL_TEXTURE_2D, 0, GL12.GL_BGRA, GL11.GL_UNSIGNED_BYTE, this.pixelBuf);
		// getTexImage does not seem to advance the buffer position, so flip does not work here
		// this.pixelBuf.flip()
		this.pixelBuf.limit(this.w * this.h);
	} catch (NullPointerException e) {
		MwUtil.log("MwTexture.getPixels: null pointer exception (texture %d)", this.id);
	}
}
 

public static IChatComponent saveScreenshot(int width, int height, Framebuffer buffer, IntBuffer pixelBuffer, int[] pixelValues) {
    final File file1 = new File(Minecraft.getMinecraft().mcDataDir, "screenshots");
    file1.mkdir();

    if (OpenGlHelper.isFramebufferEnabled()) {
        width = buffer.framebufferTextureWidth;
        height = buffer.framebufferTextureHeight;
    }

    final int i = width * height;

    if (pixelBuffer == null || pixelBuffer.capacity() < i) {
        pixelBuffer = BufferUtils.createIntBuffer(i);
        pixelValues = new int[i];
    }

    GL11.glPixelStorei(GL11.GL_PACK_ALIGNMENT, 1);
    GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
    pixelBuffer.clear();

    if (OpenGlHelper.isFramebufferEnabled()) {
        GlStateManager.bindTexture(buffer.framebufferTexture);
        GL11.glGetTexImage(GL11.GL_TEXTURE_2D, 0, GL12.GL_BGRA, GL12.GL_UNSIGNED_INT_8_8_8_8_REV, pixelBuffer);
    } else {
        GL11.glReadPixels(0, 0, width, height, GL12.GL_BGRA, GL12.GL_UNSIGNED_INT_8_8_8_8_REV, pixelBuffer);
    }

    boolean upload = true;
    pixelBuffer.get(pixelValues);

    if (!Settings.DEFAULT_UPLOAD_SS) {
        HyperiumBind uploadBind = Hyperium.INSTANCE.getHandlers().getKeybindHandler().getBinding("Upload Screenshot");
        int keyCode = uploadBind.getKeyCode();
        upload = keyCode < 0 ? Mouse.isButtonDown(keyCode + 100) : Keyboard.isKeyDown(keyCode);
    }

    new Thread(new AsyncScreenshotSaver(width, height, pixelValues, Minecraft.getMinecraft().getFramebuffer(),
        new File(Minecraft.getMinecraft().mcDataDir, "screenshots"), upload)).start();
    if (!upload) {
        return Settings.HYPERIUM_CHAT_PREFIX ? new ChatComponentText(ChatColor.RED + "[Hyperium] " + ChatColor.WHITE + "Capturing...") :
            new ChatComponentText(ChatColor.WHITE + "Capturing...");
    }
    return Settings.HYPERIUM_CHAT_PREFIX ? new ChatComponentText(ChatColor.RED + "[Hyperium] " + ChatColor.WHITE + "Uploading...") :
        new ChatComponentText(ChatColor.WHITE + "Uploading...");
}
 

private BufferedImage screenshot() {
    Framebuffer fb = Minecraft.getMinecraft().getFramebuffer();
    Dimension mcSize = GuiDraw.getDisplayRes();
    Dimension texSize = mcSize;

    if (OpenGlHelper.isFramebufferEnabled()) {
        texSize = new Dimension(fb.framebufferTextureWidth, fb.framebufferTextureHeight);
    }

    int k = texSize.width * texSize.height;
    if (pixelBuffer == null || pixelBuffer.capacity() < k) {
        pixelBuffer = BufferUtils.createIntBuffer(k);
        pixelValues = new int[k];
    }

    GL11.glPixelStorei(GL11.GL_PACK_ALIGNMENT, 1);
    GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
    pixelBuffer.clear();

    if (OpenGlHelper.isFramebufferEnabled()) {
        GlStateManager.bindTexture(fb.framebufferTexture);
        GL11.glGetTexImage(GL11.GL_TEXTURE_2D, 0, GL12.GL_BGRA, GL12.GL_UNSIGNED_INT_8_8_8_8_REV, pixelBuffer);
    } else {
        GL11.glReadPixels(0, 0, texSize.width, texSize.height, GL12.GL_BGRA, GL12.GL_UNSIGNED_INT_8_8_8_8_REV, pixelBuffer);
    }

    pixelBuffer.get(pixelValues);
    TextureUtil.processPixelValues(pixelValues, texSize.width, texSize.height);

    BufferedImage img = new BufferedImage(mcSize.width, mcSize.height, BufferedImage.TYPE_INT_ARGB);
    if (OpenGlHelper.isFramebufferEnabled()) {
        int yOff = texSize.height - mcSize.height;
        for (int y = 0; y < mcSize.height; ++y) {
            for (int x = 0; x < mcSize.width; ++x) {
                img.setRGB(x, y, pixelValues[(y + yOff) * texSize.width + x]);
            }
        }
    } else {
        img.setRGB(0, 0, texSize.width, height, pixelValues, 0, texSize.width);
    }

    return img;
}
 

/**
 * @see org.newdawn.slick.opengl.renderer.SGL#glGetTexImage(int, int, int, int, java.nio.ByteBuffer)
 */
public void glGetTexImage(int target, int level, int format, int type, ByteBuffer pixels) {
	GL11.glGetTexImage(target, level, format, type, pixels);
}