org.lwjgl.opengl.GL14 Java Examples

/**
 * Reads the first row of the slider gradient texture and upload it as
 * a 1D texture to OpenGL if it hasn't already been done.
 */
public void initGradient() {
	if (gradientTexture == 0) {
		Image slider = GameImage.SLIDER_GRADIENT.getImage().getScaledCopy(1.0f / GameImage.getUIscale());
		staticState.gradientTexture = GL11.glGenTextures();
		ByteBuffer buff = BufferUtils.createByteBuffer(slider.getWidth() * 4);
		for (int i = 0; i < slider.getWidth(); ++i) {
			Color col = slider.getColor(i, 0);
			buff.put((byte) (255 * col.r));
			buff.put((byte) (255 * col.g));
			buff.put((byte) (255 * col.b));
			buff.put((byte) (255 * col.a));
		}
		buff.flip();
		GL11.glBindTexture(GL11.GL_TEXTURE_1D, gradientTexture);
		GL11.glTexImage1D(GL11.GL_TEXTURE_1D, 0, GL11.GL_RGBA, slider.getWidth(), 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, buff);
		ContextCapabilities capabilities = GLContext.getCapabilities();
		if (capabilities.OpenGL30) {
			GL30.glGenerateMipmap(GL11.GL_TEXTURE_1D);
		} else if (capabilities.GL_EXT_framebuffer_object) {
			EXTFramebufferObject.glGenerateMipmapEXT(GL11.GL_TEXTURE_1D);
		} else {
			GL11.glTexParameteri(GL11.GL_TEXTURE_1D, GL14.GL_GENERATE_MIPMAP, GL11.GL_TRUE);
		}
	}
}
 

private void allocateFrameBuffer() {
	if (this.framebuffer != 0) return;

	this.framebuffer = EXTFramebufferObject.glGenFramebuffersEXT(); //Release via: EXTFramebufferObject.glDeleteFramebuffersEXT(framebuffer);
	this.depthBuffer = EXTFramebufferObject.glGenRenderbuffersEXT(); //Release via: EXTFramebufferObject.glDeleteRenderbuffersEXT(depthBuffer);

	EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, this.framebuffer);

	EXTFramebufferObject.glBindRenderbufferEXT(EXTFramebufferObject.GL_RENDERBUFFER_EXT, depthBuffer);
	if (MinecraftForgeClient.getStencilBits() == 0) EXTFramebufferObject.glRenderbufferStorageEXT(EXTFramebufferObject.GL_RENDERBUFFER_EXT, GL14.GL_DEPTH_COMPONENT24, width, height);
	else EXTFramebufferObject.glRenderbufferStorageEXT(EXTFramebufferObject.GL_RENDERBUFFER_EXT, org.lwjgl.opengl.EXTPackedDepthStencil.GL_DEPTH24_STENCIL8_EXT, width, height);

	EXTFramebufferObject.glFramebufferRenderbufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, EXTFramebufferObject.GL_DEPTH_ATTACHMENT_EXT, EXTFramebufferObject.GL_RENDERBUFFER_EXT, depthBuffer);
	if (MinecraftForgeClient.getStencilBits() != 0) EXTFramebufferObject.glFramebufferRenderbufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, EXTFramebufferObject.GL_STENCIL_ATTACHMENT_EXT, EXTFramebufferObject.GL_RENDERBUFFER_EXT, depthBuffer);

	this.texture = GL11.glGenTextures(); //Release via: GL11.glDeleteTextures(colorTexture);
	GL11.glBindTexture(GL11.GL_TEXTURE_2D, this.texture);
	GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
	GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, width, height, 0, GL11.GL_RGBA, GL11.GL_INT, (java.nio.ByteBuffer) null);
	EXTFramebufferObject.glFramebufferTexture2DEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, EXTFramebufferObject.GL_COLOR_ATTACHMENT0_EXT, GL11.GL_TEXTURE_2D, this.texture, 0);

	EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, 0);
}
 

public static BufferBuilder beginRender() {
	GlStateManager.enableAlpha();
	GlStateManager.enableBlend();
	GlStateManager.disableTexture2D();
	GlStateManager.enableCull();
	GlStateManager.cullFace(GlStateManager.CullFace.BACK);
	GlStateManager.depthMask(false);
	GlStateManager.enablePolygonOffset();
	GlStateManager.doPolygonOffset(-0.1f, -1000f);
	GlStateManager.enableColorMaterial();

	GlStateManager.color(1, 1, 1, 1);
	GlStateManager.shadeModel(GL11.GL_SMOOTH);

	GlStateManager.blendFunc(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE);
	GL14.glBlendEquation(GL14.GL_FUNC_SUBTRACT);

	BufferBuilder buffer = Tessellator.getInstance().getBuffer();
	buffer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX_COLOR_NORMAL);
	buffer.setTranslation(-TileEntityRendererDispatcher.staticPlayerX, -TileEntityRendererDispatcher.staticPlayerY, -TileEntityRendererDispatcher.staticPlayerZ);

	return buffer;
}
 

protected void fillGradient(int x1, int y1, int x2, int y2, int color1, int color2) {
	float float_1 = (float)(color1 >> 24 & 255) / 255.0F;
	float float_2 = (float)(color1 >> 16 & 255) / 255.0F;
	float float_3 = (float)(color1 >> 8 & 255) / 255.0F;
	float float_4 = (float)(color1 & 255) / 255.0F;
	float float_5 = (float)(color2 >> 24 & 255) / 255.0F;
	float float_6 = (float)(color2 >> 16 & 255) / 255.0F;
	float float_7 = (float)(color2 >> 8 & 255) / 255.0F;
	float float_8 = (float)(color2 & 255) / 255.0F;
	GL11.glDisable(GL11.GL_TEXTURE_2D);
	GL11.glEnable(GL11.GL_BLEND);
	GL11.glDisable(GL11.GL_ALPHA_TEST);
	GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
	GL11.glShadeModel(7425);
	Tessellator tessellator_1 = Tessellator.getInstance();
	BufferBuilder bufferBuilder_1 = tessellator_1.getBuffer();
	bufferBuilder_1.begin(7, VertexFormats.POSITION_COLOR);
	bufferBuilder_1.vertex((double)x1, (double)y1, 0).color(float_2, float_3, float_4, float_1).next();
	bufferBuilder_1.vertex((double)x1, (double)y2, 0).color(float_2, float_3, float_4, float_1).next();
	bufferBuilder_1.vertex((double)x2, (double)y2, 0).color(float_6, float_7, float_8, float_5).next();
	bufferBuilder_1.vertex((double)x2, (double)y1, 0).color(float_6, float_7, float_8, float_5).next();
	tessellator_1.draw();
	GL11.glShadeModel(7424);
	GL11.glDisable(GL11.GL_BLEND);
	GL11.glEnable(GL11.GL_ALPHA_TEST);
	GL11.glEnable(GL11.GL_TEXTURE_2D);
}
 

@Override
public void doRenderLayer(EntityWitherCat cat, float p_177201_2_, float p_177201_3_, float p_177201_4_, float p_177201_5_, float p_177201_6_,
    float p_177201_7_, float p_177201_8_) {

  float blendFactor = 1.0F;
  float scale = cat.getScale();
  blendFactor = 1 - (cat.getAngryScale() - scale);

  if (blendFactor > 0) {
    bindTexture(angryTexture);

    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_CONSTANT_ALPHA, GL11.GL_ONE_MINUS_CONSTANT_ALPHA);

    GL14.glBlendColor(1.0f, 1.0f, 1.0f, blendFactor);

    GL11.glEnable(GL11.GL_POLYGON_OFFSET_FILL);
    GL11.glPolygonOffset(-1, -1);

    char c0 = 61680;
    int j = c0 % 65536;
    int k = c0 / 65536;
    OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, j / 1.0F, k / 1.0F);
    GL11.glEnable(GL11.GL_LIGHTING);

    getMainModel().render(cat, p_177201_2_, p_177201_3_, p_177201_5_, p_177201_6_, p_177201_7_, p_177201_8_);
    setLightmap(cat);
  }

}
 

/**
 * Backup the current state of the relevant OpenGL state and change it to
 * what's needed to draw the curve.
 */
private RenderState saveRenderState() {
	RenderState state = new RenderState();
	state.smoothedPoly = GL11.glGetBoolean(GL11.GL_POLYGON_SMOOTH);
	state.blendEnabled = GL11.glGetBoolean(GL11.GL_BLEND);
	state.depthEnabled = GL11.glGetBoolean(GL11.GL_DEPTH_TEST);
	state.depthWriteEnabled = GL11.glGetBoolean(GL11.GL_DEPTH_WRITEMASK);
	state.texEnabled = GL11.glGetBoolean(GL11.GL_TEXTURE_2D);
	state.oldProgram = GL11.glGetInteger(GL20.GL_CURRENT_PROGRAM);
	state.oldArrayBuffer = GL11.glGetInteger(GL15.GL_ARRAY_BUFFER_BINDING);
	GL11.glDisable(GL11.GL_POLYGON_SMOOTH);
	GL11.glEnable(GL11.GL_BLEND);
	GL14.glBlendEquation(GL14.GL_FUNC_ADD);
	GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
	GL11.glEnable(GL11.GL_DEPTH_TEST);
	GL11.glDepthMask(true);
	GL11.glDisable(GL11.GL_TEXTURE_2D);
	GL11.glEnable(GL11.GL_TEXTURE_1D);
	GL11.glBindTexture(GL11.GL_TEXTURE_1D, staticState.gradientTexture);
	GL11.glTexParameteri(GL11.GL_TEXTURE_1D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR_MIPMAP_LINEAR);
	GL11.glTexParameteri(GL11.GL_TEXTURE_1D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
	GL11.glTexParameteri(GL11.GL_TEXTURE_1D, GL11.GL_TEXTURE_WRAP_S, GL12.GL_CLAMP_TO_EDGE);

	GL20.glUseProgram(0);

	GL11.glClear(GL11.GL_DEPTH_BUFFER_BIT);

	return state;
}
 

private static void buildMapping() {
	if (mapping != null) return;
	Multimap<Integer, String> map = HashMultimap.create();
	List<Class<?>> classes = ImmutableList.of(
			GL11.class, GL12.class, GL13.class, GL14.class, GL15.class,
			GL20.class, GL21.class, GL30.class, GL31.class, GL32.class,
			GL33.class, GL40.class, GL41.class, GL42.class, GL43.class,
			GL44.class, GL45.class, GLFW.class
			);
	for (Class<?> clazz : classes) {
		for (Field f : clazz.getDeclaredFields()) {
			if (f.getName().toUpperCase(Locale.ROOT).equals(f.getName()) &&
					f.getType() == int.class && Modifier.isPublic(f.getModifiers()) && Modifier.isStatic(f.getModifiers())) {
				List<String> li = Splitter.on('_').splitToList(f.getName());
				li = li.subList(1, li.size());
				String clean =
					Joiner.on(' ').join(
						li.stream()
							.map(Errors::toTitleCase)
							.iterator());
				try {
					map.put(f.getInt(null), clean);
				} catch (Throwable t) {
					t.printStackTrace();
				}
			}
		}
	}
	mapping = map;
}
 

public void createGL() {
    if (image == null || glID != -1)
        return;
    int[] pixels = ((DataBufferInt) image.getRaster().getDataBuffer()).getData();
    image.getRGB(0, 0, image.getWidth(), image.getHeight(), pixels, 0, image.getWidth());

    ByteBuffer buffer = BufferUtils.createByteBuffer(image.getWidth() * image.getHeight() * 4); //4 for RGBA, 3 for RGB

    for (int y = 0; y < image.getHeight(); y++) {
        for (int x = 0; x < image.getWidth(); x++) {
            int pixel = pixels[y * image.getWidth() + x];
            buffer.put((byte) ((pixel >> 16) & 0xFF));     // Red component
            buffer.put((byte) ((pixel >> 8) & 0xFF));      // Green component
            buffer.put((byte) (pixel & 0xFF));               // Blue component
            buffer.put((byte) ((pixel >> 24) & 0xFF));    // Alpha component. Only for RGBA
        }
    }

    buffer.flip(); //FOR THE LOVE OF GOD DO NOT FORGET THIS

    // You now have a ByteBuffer filled with the color data of each pixel.
    // Now just create a texture ID and bind it. Then you can load it using 
    // whatever OpenGL method you want, for example:
    glID = glGenTextures();
    glBindTexture(GL_TEXTURE_2D, glID);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL12.GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL12.GL_CLAMP_TO_EDGE);

    //Setup texture scaling filtering
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    
    glTexParameteri(GL_TEXTURE_2D, GL14.GL_GENERATE_MIPMAP, GL_TRUE);

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, image.getWidth(), image.getHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
}
 

public static void finishRender(BufferBuilder buffer) {
	Tessellator.getInstance().draw();
	buffer.setTranslation(0, 0, 0);

	GlStateManager.glBlendEquation(GL14.GL_FUNC_ADD);
	GlStateManager.blendFunc(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA);
	GlStateManager.depthMask(true);

	GlStateManager.disablePolygonOffset();
	GlStateManager.enableDepth();
	GlStateManager.enableTexture2D();
}
 

protected static int loadTextureToOpenGL(TextureData data, TextureBuilder builder) {
	int texID = GL11.glGenTextures();
	GL13.glActiveTexture(GL13.GL_TEXTURE0);
	GL11.glBindTexture(GL11.GL_TEXTURE_2D, texID);
	GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
	GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, data.getWidth(), data.getHeight(), 0, GL12.GL_BGRA,
			GL11.GL_UNSIGNED_BYTE, data.getBuffer());
	if (builder.isMipmap()) {
		GL30.glGenerateMipmap(GL11.GL_TEXTURE_2D);
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR_MIPMAP_LINEAR);
		if (builder.isAnisotropic() && GLContext.getCapabilities().GL_EXT_texture_filter_anisotropic) {
			GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL14.GL_TEXTURE_LOD_BIAS, 0);
			GL11.glTexParameterf(GL11.GL_TEXTURE_2D, EXTTextureFilterAnisotropic.GL_TEXTURE_MAX_ANISOTROPY_EXT,
					4.0f);
		}
	} else if (builder.isNearest()) {
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
	} else {
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
	}
	if (builder.isClampEdges()) {
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL12.GL_CLAMP_TO_EDGE);
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL12.GL_CLAMP_TO_EDGE);
	} else {
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL11.GL_REPEAT);
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL11.GL_REPEAT);
	}
	GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
	return texID;
}
 

public void renderItem(add itemStack, int x, int y) {
	bam.c();
	GL11.glEnable(GL11.GL_BLEND);
	GL14.glBlendFuncSeparate(770, 771, 1, 0);
	GL11.glDisable(GL11.GL_LIGHTING);
	itemRenderer.a(getFontrenderer(), getTextureManager(), itemStack, x, y);
	itemRenderer.c(getFontrenderer(), getTextureManager(), itemStack, x, y);
	GL11.glEnable(GL11.GL_LIGHTING);
	GL11.glDisable(GL11.GL_BLEND);
	bam.a();
}
 

public static void glSetup(double x, double y, double z) {
	GL11.glPushMatrix();
	RenderUtils.offsetRender();
    GL11.glTranslated(x, y, z);
    GL11.glNormal3f(0.0F, 1.0F, 0.0F);
    GL11.glRotatef(-mc.player.yaw, 0.0F, 1.0F, 0.0F);
    GL11.glRotatef(mc.player.pitch, 1.0F, 0.0F, 0.0F);
    //GL11.glDisable(GL11.GL_LIGHTING);
    GL11.glDisable(GL11.GL_DEPTH_TEST);

    GL11.glEnable(GL11.GL_BLEND);
    GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
    
}
 

public static void gl11Setup() {
	GL11.glEnable(GL11.GL_BLEND);
       GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
       GL11.glLineWidth(2.5F);
       GL11.glDisable(GL11.GL_TEXTURE_2D);
       GL11.glDisable(GL11.GL_DEPTH_TEST);
       GL11.glMatrixMode(5889);
	GL11.glEnable(GL11.GL_LINE_SMOOTH);
	GL11.glPushMatrix();
	offsetRender();
}
 

protected void fillGradient(MatrixStack matrix, int x1, int y1, int x2, int y2, int color1, int color2) {
	float float_1 = (float)(color1 >> 24 & 255) / 255.0F;
	float float_2 = (float)(color1 >> 16 & 255) / 255.0F;
	float float_3 = (float)(color1 >> 8 & 255) / 255.0F;
	float float_4 = (float)(color1 & 255) / 255.0F;
	float float_5 = (float)(color2 >> 24 & 255) / 255.0F;
	float float_6 = (float)(color2 >> 16 & 255) / 255.0F;
	float float_7 = (float)(color2 >> 8 & 255) / 255.0F;
	float float_8 = (float)(color2 & 255) / 255.0F;
	GL11.glDisable(GL11.GL_TEXTURE_2D);
	GL11.glEnable(GL11.GL_BLEND);
	GL11.glDisable(GL11.GL_ALPHA_TEST);
	GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
	GL11.glShadeModel(7425);
	Tessellator tessellator_1 = Tessellator.getInstance();
	BufferBuilder bufferBuilder_1 = tessellator_1.getBuffer();
	bufferBuilder_1.begin(7, VertexFormats.POSITION_COLOR);
	bufferBuilder_1.vertex((double)x1, (double)y1, 0).color(float_2, float_3, float_4, float_1).next();
	bufferBuilder_1.vertex((double)x1, (double)y2, 0).color(float_2, float_3, float_4, float_1).next();
	bufferBuilder_1.vertex((double)x2, (double)y2, 0).color(float_6, float_7, float_8, float_5).next();
	bufferBuilder_1.vertex((double)x2, (double)y1, 0).color(float_6, float_7, float_8, float_5).next();
	tessellator_1.draw();
	GL11.glShadeModel(7424);
	GL11.glDisable(GL11.GL_BLEND);
	GL11.glEnable(GL11.GL_ALPHA_TEST);
	GL11.glEnable(GL11.GL_TEXTURE_2D);
}
 

public static void glSetup(double x, double y, double z) {
	GL11.glPushMatrix();
	RenderUtils.offsetRender();
    GL11.glTranslated(x, y, z);
    GL11.glNormal3f(0.0F, 1.0F, 0.0F);
    GL11.glRotatef(-mc.player.yaw, 0.0F, 1.0F, 0.0F);
    GL11.glRotatef(mc.player.pitch, 1.0F, 0.0F, 0.0F);
    //GL11.glDisable(GL11.GL_LIGHTING);
    GL11.glDisable(GL11.GL_DEPTH_TEST);

    GL11.glEnable(GL11.GL_BLEND);
    GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
    
}
 

public static void gl11Setup() {
	GL11.glEnable(GL11.GL_BLEND);
       GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
       GL11.glLineWidth(2.5F);
       GL11.glDisable(GL11.GL_TEXTURE_2D);
       GL11.glDisable(GL11.GL_DEPTH_TEST);
       GL11.glMatrixMode(5889);
	GL11.glEnable(GL11.GL_LINE_SMOOTH);
	GL11.glPushMatrix();
	offsetRender();
}
 

public static void glSetup(double x, double y, double z) {
	GL11.glPushMatrix();
    GL11.glTranslated(x - RenderUtils.renderPos().x, y - RenderUtils.renderPos().y, z - RenderUtils.renderPos().z);
    GL11.glNormal3f(0.0F, 1.0F, 0.0F);
    GL11.glRotatef(-mc.getRenderManager().playerViewY, 0.0F, 1.0F, 0.0F);
    GL11.glRotatef(mc.getRenderManager().playerViewX, 1.0F, 0.0F, 0.0F);
    GL11.glDisable(GL11.GL_LIGHTING);
    GL11.glDisable(GL11.GL_DEPTH_TEST);

    GL11.glEnable(GL11.GL_BLEND);
    GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
    
}
 

public static void gl11Setup() {
	GL11.glEnable(GL11.GL_BLEND);
	GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
       GL11.glLineWidth(2.5F);
       GL11.glDisable(GL11.GL_TEXTURE_2D);
       GL11.glDisable(GL11.GL_DEPTH_TEST);
       GL11.glMatrixMode(5889);
       GL11.glPushMatrix();
}
 

private void fillGradient(int x1, int y1, int x2, int y2, int color1, int color2) {
	float float_1 = (float)(color1 >> 24 & 255) / 255.0F;
	float float_2 = (float)(color1 >> 16 & 255) / 255.0F;
	float float_3 = (float)(color1 >> 8 & 255) / 255.0F;
	float float_4 = (float)(color1 & 255) / 255.0F;
	float float_5 = (float)(color2 >> 24 & 255) / 255.0F;
	float float_6 = (float)(color2 >> 16 & 255) / 255.0F;
	float float_7 = (float)(color2 >> 8 & 255) / 255.0F;
	float float_8 = (float)(color2 & 255) / 255.0F;
	GL11.glDisable(GL11.GL_TEXTURE_2D);
	GL11.glEnable(GL11.GL_BLEND);
	GL11.glDisable(GL11.GL_ALPHA_TEST);
	GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
	GL11.glShadeModel(7425);
	Tessellator tessellator_1 = Tessellator.getInstance();
	BufferBuilder bufferBuilder_1 = tessellator_1.getBufferBuilder();
	bufferBuilder_1.begin(7, VertexFormats.POSITION_COLOR);
	bufferBuilder_1.vertex((double)x1, (double)y1, 0).color(float_2, float_3, float_4, float_1).next();
	bufferBuilder_1.vertex((double)x1, (double)y2, 0).color(float_2, float_3, float_4, float_1).next();
	bufferBuilder_1.vertex((double)x2, (double)y2, 0).color(float_6, float_7, float_8, float_5).next();
	bufferBuilder_1.vertex((double)x2, (double)y1, 0).color(float_6, float_7, float_8, float_5).next();
	tessellator_1.draw();
	GL11.glShadeModel(7424);
	GL11.glDisable(GL11.GL_BLEND);
	GL11.glEnable(GL11.GL_ALPHA_TEST);
	GL11.glEnable(GL11.GL_TEXTURE_2D);
}
 

public static void glSetup(double x, double y, double z) {
	GL11.glPushMatrix();
    GL11.glTranslated(x - RenderUtils.renderPos().x, y - RenderUtils.renderPos().y, z - RenderUtils.renderPos().z);
    GL11.glNormal3f(0.0F, 1.0F, 0.0F);
    GL11.glRotatef(-mc.player.yaw, 0.0F, 1.0F, 0.0F);
    GL11.glRotatef(mc.player.pitch, 1.0F, 0.0F, 0.0F);
    GL11.glDisable(GL11.GL_LIGHTING);
    GL11.glDisable(GL11.GL_DEPTH_TEST);

    GL11.glEnable(GL11.GL_BLEND);
    GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
    
}
 

public static void gl11Setup() {
	GL11.glEnable(GL11.GL_BLEND);
       GL14.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
       GL11.glLineWidth(2.5F);
       GL11.glDisable(GL11.GL_TEXTURE_2D);
       GL11.glDisable(GL11.GL_DEPTH_TEST);
       GL11.glMatrixMode(5889);
	GL11.glEnable(GL11.GL_LINE_SMOOTH);
	GL11.glPushMatrix();
}
 

/**
 * Sets up an FBO for one of the extra render passes. The FBO is initialised
 * with a texture colour attachment, and can be initialised with either a
 * render buffer or texture attachment for the depth buffer.
 * 
 * @param width
 *            - The width of the FBO in pixels.
 * @param height
 *            - The height of the FBO in pixels.
 * @param useTextureForDepth
 *            - Whether the depth buffer attachment should be a texture or a
 *            render buffer.
 * @return The completed FBO.
 */
private static Fbo createWaterFbo(int width, int height, boolean useTextureForDepth) {
	Attachment colourAttach = new TextureAttachment(GL11.GL_RGBA8);
	Attachment depthAttach;
	if (useTextureForDepth) {
		depthAttach = new TextureAttachment(GL14.GL_DEPTH_COMPONENT24);
	} else {
		depthAttach = new RenderBufferAttachment(GL14.GL_DEPTH_COMPONENT24);
	}
	return Fbo.newFbo(width, height).addColourAttachment(0, colourAttach).addDepthAttachment(depthAttach).init();
}