Example usage for org.lwjgl.opengl GL11 glGetTexLevelParameteri

Introduction

In this page you can find the example usage for org.lwjgl.opengl GL11 glGetTexLevelParameteri.

Prototype

@NativeType("void")
public static int glGetTexLevelParameteri(@NativeType("GLenum") int target, @NativeType("GLint") int level,
        @NativeType("GLenum") int pname) 

Source Link

Document

Places integer information about texture image parameter pname for level-of-detail level of the specified target into params .

Usage

From source file:org.getspout.spout.config.MipMapUtils.java

License:Open Source License

public static void initalizeTexture(int textureId) {
    GL11.glBindTexture(3553, textureId);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST_MIPMAP_LINEAR);

    int textureWidth = GL11.glGetTexLevelParameteri(GL11.GL_TEXTURE_2D, 0, GL11.GL_TEXTURE_WIDTH);
    int tileWidth = textureWidth / 16;

    setMipmapLevels(textureId, (int) Math.round(Math.log((double) tileWidth) / Math.log(2D)));

    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL12.GL_TEXTURE_MAX_LOD, getMipmapLevels(textureId));

    ContextCapabilities capabilities = GLContext.getCapabilities();
    if (capabilities.OpenGL30) {
        MipMapUtils.mode = 1;//from  www. ja  v a  2 s.  c o m
    } else if (capabilities.GL_EXT_framebuffer_object) {
        MipMapUtils.mode = 2;
    } else if (capabilities.OpenGL14) {
        MipMapUtils.mode = 3;
        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL14.GL_GENERATE_MIPMAP, GL11.GL_TRUE);
    }
}

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From source file:org.spoutcraft.client.config.MipMapUtils.java

License:Open Source License

public static void initalizeTexture(int textureId) {
    SpoutClient.getHandle().renderEngine.bindTexture(textureId);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST_MIPMAP_LINEAR);

    int textureWidth = GL11.glGetTexLevelParameteri(GL11.GL_TEXTURE_2D, 0, GL11.GL_TEXTURE_WIDTH);
    int tileWidth = textureWidth / 16;

    setMipmapLevels(textureId, (int) Math.round(Math.log((double) tileWidth) / Math.log(2D)));

    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL12.GL_TEXTURE_MAX_LOD, getMipmapLevels(textureId));

    ContextCapabilities capabilities = GLContext.getCapabilities();
    if (capabilities.OpenGL30) {
        MipMapUtils.mode = 1;/*from   w w  w . j a  v  a  2 s .  c  o m*/
    } else if (capabilities.GL_EXT_framebuffer_object) {
        MipMapUtils.mode = 2;
    } else if (capabilities.OpenGL14) {
        MipMapUtils.mode = 3;
        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL14.GL_GENERATE_MIPMAP, GL11.GL_TRUE);
    }
}

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From source file:tk.ivybits.engine.gl.GL.java

License:Open Source License

public static int glGetTexLevelParameteri(int a, int b, int c) {
    return GL11.glGetTexLevelParameteri(a, b, c);
}

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From source file:vazkii.botania.client.core.handler.MiscellaneousIcons.java

License:Open Source License

@SubscribeEvent
public void dumpAtlas(ArrowLooseEvent evt) {
    if (!evt.getEntityPlayer().worldObj.isRemote
            || !((Boolean) Launch.blackboard.get("fml.deobfuscatedEnvironment"))
            || !evt.getEntityPlayer().isSneaking())
        return;//from ww w  .  ja  v  a 2s .com
    Minecraft.getMinecraft().renderEngine.bindTexture(TextureMap.LOCATION_BLOCKS_TEXTURE);

    int width = GL11.glGetTexLevelParameteri(GL11.GL_TEXTURE_2D, 0, GL11.GL_TEXTURE_WIDTH);
    int height = GL11.glGetTexLevelParameteri(GL11.GL_TEXTURE_2D, 0, GL11.GL_TEXTURE_HEIGHT);

    Botania.LOGGER.debug("Dumped atlas %d wide by %d tall%n", width, height);

    int pixels = width * height;

    IntBuffer buffer = BufferUtils.createIntBuffer(pixels);
    int[] pixelValues = new int[pixels];

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

    GL11.glGetTexImage(GL11.GL_TEXTURE_2D, 0, GL12.GL_BGRA, GL12.GL_UNSIGNED_INT_8_8_8_8_REV, buffer);

    buffer.get(pixelValues);

    BufferedImage bufferedimage = new BufferedImage(width, height, 2);

    for (int k = 0; k < height; ++k) {
        for (int l = 0; l < width; ++l) {
            bufferedimage.setRGB(l, k, pixelValues[k * width + l]);
        }
    }

    File mcFolder = Minecraft.getMinecraft().mcDataDir;
    File result = new File(mcFolder, "atlas.png");

    try {
        ImageIO.write(bufferedimage, "png", result);
    } catch (IOException e) {
        Botania.LOGGER.warn("Failed to dump debug atlas");
    }
}

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