org.lwjgl.opengl.ContextCapabilities 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);
		}
	}
}
 

public static boolean setup() {
	if (OpenGlHelper.framebufferSupported) {
		final ContextCapabilities caps = GLContext.getCapabilities();

		if (caps.OpenGL30) {
			Log.debug("Using OpenGL 3.0 FB blit");
			INSTANCE = new GL30Impl();
			return true;
		}

		if (caps.GL_EXT_framebuffer_blit) {
			Log.debug("Using EXT FB blit");
			INSTANCE = new ExtImpl();
			return true;
		}
	}

	Log.debug("FB blit not supported");
	return false;
}
 

/**
 * Init curves for given circle diameter
 * Should be called before any curves are drawn.
 * @param circleDiameter the circle diameter
 * @param borderColor the curve border color
 */
public static void init(float circleDiameter, Color borderColor) {
	Curve.borderColor = borderColor;

	ContextCapabilities capabilities = GLContext.getCapabilities();
	mmsliderSupported = capabilities.OpenGL30;
	if (mmsliderSupported) {
		CurveRenderState.init(circleDiameter);
	} else if (SkinService.skin.getSliderStyle() != Skin.STYLE_PEPPYSLIDER) {
		Log.warn("New slider style requires OpenGL 3.0.");
	}
}
 

/**
 * Set the width and height of the container that Curves get drawn into.
 * Should be called before any curves are drawn.
 * @param width the container width
 * @param height the container height
 * @param circleDiameter the circle diameter
 * @param borderColor the curve border color
 */
public static void init(int width, int height, float circleDiameter, Color borderColor) {
	Curve.borderColor = borderColor;

	ContextCapabilities capabilities = GLContext.getCapabilities();
	mmsliderSupported = capabilities.OpenGL30;
	if (mmsliderSupported) {
		CurveRenderState.init(width, height, circleDiameter);
		LegacyCurveRenderState.init(width, height, circleDiameter);
	} else {
		if (Options.getSkin().getSliderStyle() != Skin.STYLE_PEPPYSLIDER)
			Log.warn("New slider style requires OpenGL 3.0.");
	}
}
 

private static boolean isFormatSupported(Format fmt, ContextCapabilities caps){
    switch (fmt){
        case ARGB4444:
            return false;
        case BGR8:
            return caps.OpenGL12 || caps.GL_EXT_bgra;
        case DXT1:
        case DXT1A:
        case DXT3:
        case DXT5:
            return caps.GL_EXT_texture_compression_s3tc;
        case Depth:
        case Depth16:
        case Depth24:
        case Depth32:
            return caps.OpenGL14 || caps.GL_ARB_depth_texture;
        case Depth32F:
        case Luminance16F:
        case Luminance16FAlpha16F:
        case Luminance32F:
        case RGBA16F:
        case RGBA32F:
            return caps.OpenGL30 || caps.GL_ARB_texture_float;
        case LATC:
        case LTC:
            return caps.GL_EXT_texture_compression_latc;
        case RGB9E5:
        case RGB16F_to_RGB9E5:
            return caps.OpenGL30 || caps.GL_EXT_texture_shared_exponent;
        case RGB111110F:
        case RGB16F_to_RGB111110F:
            return caps.OpenGL30 || caps.GL_EXT_packed_float;
        default:
            return true;
    }
}
 

static void initialize() {
	ContextCapabilities caps = GLContext.getCapabilities();

	if (GL20ShaderMethods.isSupported(caps)) methods = new GL20ShaderMethods();
	else if (ARBShaderMethods.isSupported(caps)) methods = new ARBShaderMethods();
}
 

public static boolean isSupported(ContextCapabilities caps) {
	return caps.OpenGL20;
}
 

public static boolean isSupported(ContextCapabilities caps) {
	return caps.GL_ARB_shader_objects && caps.GL_ARB_vertex_shader && caps.GL_ARB_fragment_shader;
}
 

static void initialize() {
	ContextCapabilities caps = GLContext.getCapabilities();
	if (GLArrayMethods.isSupported(caps)) methods = new GLArrayMethods();
	else if (ARBArrayMethods.isSupported(caps)) methods = new ARBArrayMethods();
}
 

public static boolean isSupported(ContextCapabilities caps) {
	return caps.OpenGL33;
}
 

public static boolean isSupported(ContextCapabilities caps) {
	return caps.GL_ARB_instanced_arrays && caps.GL_ARB_vertex_array_object;
}
 

static void initialize() {
	ContextCapabilities caps = GLContext.getCapabilities();
	if (GLBufferMethods.isSupported(caps)) methods = new GLBufferMethods();
	else if (ARBBufferMethods.isSupported(caps)) methods = new ARBBufferMethods();
}
 

public static boolean isSupported(ContextCapabilities caps) {
	return caps.OpenGL15;
}
 

public static boolean isSupported(ContextCapabilities caps) {
	return caps.OpenGL15;
}