Example usage for org.lwjgl.opengl GL11 glBindTexture

Introduction

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

Prototype

public static void glBindTexture(@NativeType("GLenum") int target, @NativeType("GLuint") int texture) 

Source Link

Document

Binds the a texture to a texture target.

Usage

From source file:$.DrawSystem.java

License:Open Source License

private void drawLevel(Level level) {

        GL11.glPushMatrix();//from   w w  w . jav a  2s.c  o m
        GL11.glLoadIdentity();
        IPlay backgroundAnimationPlay = level.getBackground();
        backgroundAnimationPlay.update((long) (world.getDelta() * 1000L));
        final IAnimationFrame currentFrame = backgroundAnimationPlay.getCurrentFrame();
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, (Integer) currentFrame.getImage().getId());
        float x1 = -toolkit.getVirtualResolutionWidth() / 2.0f;
        float x2 = toolkit.getVirtualResolutionWidth() / 2.0f;
        float y1 = toolkit.getVirtualResolutionHeight() / 2.0f;
        float y2 = -toolkit.getVirtualResolutionHeight() / 2.0f;
        float u1 = currentFrame.getU1();
        float u2 = currentFrame.getU2();

        float v1 = currentFrame.getV2();
        float v2 = currentFrame.getV1();
        GL11.glBegin(GL11.GL_QUADS);
        GL11.glTexCoord2f(u1, v1);
        GL11.glVertex2f(x1, y2);
        GL11.glTexCoord2f(u2, v1);
        GL11.glVertex2f(x2, y2);
        GL11.glTexCoord2f(u2, v2);
        GL11.glVertex2f(x2, y1);
        GL11.glTexCoord2f(u1, v2);
        GL11.glVertex2f(x1, y1);
        GL11.glEnd();
        GL11.glPopMatrix();
    }

---

From source file:$.DrawSystem.java

License:Open Source License

private void drawSprite(Sprite sprite) {
        Vector pos = spriteProjector.project(sprite.getPosition());
        final IPlay play = sprite.getPlay();
        if (null != play) {
            GL11.glPushMatrix();/*from   w  w  w.j a v a 2  s .c  o m*/
            GL11.glTranslatef(pos.x, pos.y, 0.0f);
            GL11.glRotatef(sprite.getRotate(), 0, 0, 1.0f);
            GL11.glScalef(sprite.getScale(), sprite.getScale(), 1);
            final IAnimationFrame frame = play.getCurrentFrame();
            final IAnimationImage image = frame.getImage();
            if (image.hasAlpha()) {
                GL11.glEnable(GL11.GL_BLEND);
            }
            GL11.glBindTexture(GL11.GL_TEXTURE_2D, (Integer) image.getId());

            final float u1, u2;
            if (sprite.isMirrorX()) {
                u1 = frame.getU2();
                u2 = frame.getU1();
            } else {
                u1 = frame.getU1();
                u2 = frame.getU2();
            }

            final float v1, v2;
            if (sprite.isMirrorY()) {
                v1 = frame.getV1();
                v2 = frame.getV2();
            } else {
                v1 = frame.getV2();
                v2 = frame.getV1();
            }
            GL11.glColor4f(sprite.getRed(), sprite.getGreen(), sprite.getBlue(), sprite.getAlpha());
            float x1 = -sprite.getWidth() / 2.0f;
            float x2 = sprite.getWidth() / 2.0f;
            float y1 = -sprite.getHeight() / 2.0f;
            float y2 = sprite.getHeight() / 2.0f;
            GL11.glBegin(GL11.GL_QUADS);
            GL11.glTexCoord2f(u1, v1);
            GL11.glVertex2f(x1, y2);
            GL11.glTexCoord2f(u2, v1);
            GL11.glVertex2f(x2, y2);
            GL11.glTexCoord2f(u2, v2);
            GL11.glVertex2f(x2, y1);
            GL11.glTexCoord2f(u1, v2);
            GL11.glVertex2f(x1, y1);
            GL11.glEnd();
            GL11.glColor3f(1f, 1f, 1f);
            if (image.hasAlpha()) {
                GL11.glDisable(GL11.GL_BLEND);
            }
            GL11.glPopMatrix();
        }
        if (null != sprite.getLabel()) {
            GL11.glPushMatrix();
            GL11.glTranslatef(pos.x, pos.y, 0.0f);
            GL11.glScalef(0.5f, -0.5f, 1f);
            GL11.glEnable(GL11.GL_BLEND);
            LwjglNuitFont font = (LwjglNuitFont) assets.getFont("");
            font.drawString(sprite.getLabel(), LwjglNuitFont.Align.CENTER);
            GL11.glDisable(GL11.GL_BLEND);
            GL11.glPopMatrix();
        }
    }

---

From source file:a1.gui.GUI_Map.java

License:Open Source License

public void DrawTiles() {
    int x, y, i;/* w  w  w.ja v a 2s  . c o  m*/
    int stw, sth;
    Coord oc, tc, ctc, sc;

    RenderedTiles = 0;
    Render2D.ChangeColor();
    Sprite.setStaticColor();

    //   ? ?
    stw = (TILE_SIZE * 4) - 2;
    sth = TILE_SIZE * 2;
    // ?  ?
    Coord sz = scaled_size;
    oc = viewoffset(sz, mc);
    //   ? ?
    tc = mc.div(TILE_SIZE);
    tc.x += -(sz.x / (2 * stw)) - (sz.y / (2 * sth)) - 2;
    tc.y += (sz.x / (2 * stw)) - (sz.y / (2 * sth));

    if (needUpdateView) {

        needUpdateView = false;

        for (y = 0; y < (sz.y / sth) + 13; y++) {
            for (x = 0; x < (sz.x / stw) + 3; x++) {
                for (i = 0; i < 2; i++) {
                    //   
                    ctc = tc.add(new Coord(x + y, y - x + i));
                    // ?  
                    sc = m2s(ctc.mul(TILE_SIZE)).add(oc);
                    sc.x -= TILE_SIZE * 2;
                    //  
                    //    ? 
                    drawtile(ctc, sc);
                }
            }
        }

        // ?   ? 
        if (Config.tile_grid) {
            for (y = 0; y < (sz.y / sth) + 2; y++) {
                for (x = 0; x < (sz.x / stw) + 3; x++) {
                    for (i = 0; i < 2; i++) {
                        ctc = tc.add(new Coord(x + y, -x + y + i));
                        sc = m2s(ctc.mul(TILE_SIZE)).add(oc);
                        drawtile_grid(sc);
                    }
                }
            }
        }

        if (render_claims) {
            Color col;
            for (ClaimPersonal claim : Claims.claims.values()) {

                if (Player.CharID == claim.owner_id) {
                    col = new Color(0f, 1f, 1f, 0.25f);
                    //                  if (Claims.expand_claim != null)
                    //                     continue;
                } else
                    col = new Color(1f, 0f, 0f, 0.25f);

                putClaim(claim, oc, col);
            }

            if (Claims.expand_claim != null) {
                col = new Color(0f, 0f, 0.8f, 0.17f);

                putClaim(Claims.expand_claim, oc, col);
            }
        }

        //
        updateVBO();
    }

    Color.white.bind();
    GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
    GL11.glEnableClientState(GL11.GL_TEXTURE_COORD_ARRAY);

    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, tile_vbo);
    GL11.glVertexPointer(2, GL11.GL_FLOAT, 16, 0L);
    GL11.glTexCoordPointer(2, GL11.GL_FLOAT, 16, 8L);

    Resource.textures.get("tiles").bind();

    GL11.glDrawArrays(GL11.GL_QUADS, 0, tile_drawCount);

    GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
    GL11.glDisableClientState(GL11.GL_TEXTURE_COORD_ARRAY);

    if (render_claims) {
        GL11.glEnableClientState(GL11.GL_COLOR_ARRAY);
        GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, claim_vbo);
        GL11.glColorPointer(4, GL11.GL_FLOAT, 24, 0L);
        GL11.glVertexPointer(2, GL11.GL_FLOAT, 24, 16L);
        GL11.glDrawArrays(GL11.GL_QUADS, 0, claim_drawCount);
        GL11.glDisableClientState(GL11.GL_COLOR_ARRAY);
    }

    if (Config.tile_grid) {
        GL11.glColor4f(0.0f, 0.0f, 0.0f, 0.4f);
        GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, tileGrid_vbo);
        GL11.glVertexPointer(2, GL11.GL_FLOAT, 0, 0L);
        GL11.glDrawArrays(GL11.GL_LINES, 0, tileGrid_drawCount);
    }

    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL11.glDisableClientState(GL11.GL_VERTEX_ARRAY);

}

---

From source file:a1.gui.GUI_Map.java

License:Open Source License

public void DoCreate() {
    IntBuffer tt = BufferUtils.createIntBuffer(1);
    GL11.glGenTextures(tt);/*from  w w  w. j av  a2 s .c  o m*/
    LightMap = tt.get(0);

    GL11.glBindTexture(GL11.GL_TEXTURE_2D, LightMap);
    ByteBuffer bb = BufferUtils.createByteBuffer(1024 * 1024 * 4);
    GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, 1024, 1024, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE,
            bb);
    GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
    GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
    Render2D.CheckError();
}

---

From source file:a1.gui.GUI_Map.java

License:Open Source License

public void RenderLightMap() {
    GL11.glBlendFunc(GL11.GL_ZERO, GL11.GL_SRC_COLOR);
    //Log.info("lightmap: "+LightMap);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, LightMap); //Resource.textures.get("core_skin").getTextureID());

    GL11.glTranslatef(0, 0, 0);//from  w  w w  .j  av a 2s  . c o  m
    GL11.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);

    float texwidth = 1024;
    float texheight = 1024;

    float newTextureOffsetX = 0 / texwidth;
    float newTextureOffsetY = 0 / texheight;
    float newTextureWidth = 1024 / texwidth;
    float newTextureHeight = 1024 / texheight;

    int w = 1024;
    int h = 1024;

    GL11.glBegin(GL11.GL_QUADS);
    {
        glTexCoord2f(newTextureOffsetX, newTextureOffsetY);
        glVertex2i(0, 0);

        glTexCoord2f(newTextureOffsetX, newTextureOffsetY + newTextureHeight);
        glVertex2i(0, h);

        glTexCoord2f(newTextureOffsetX + newTextureWidth, newTextureOffsetY + newTextureHeight);
        glVertex2i(w, h);

        glTexCoord2f(newTextureOffsetX + newTextureWidth, newTextureOffsetY);
        glVertex2i(w, 0);
    }

    GL11.glEnd();

    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
}

---

From source file:ar.com.quark.backend.lwjgl.opengl.DesktopGLES20.java

License:Apache License

/**
 * {@inheritDoc}
 */
@Override
public void glBindTexture(int target, int name) {
    GL11.glBindTexture(target, name);
}

---

From source file:armonkeykit.videocapture.QtCaptureImage.java

License:Open Source License

public boolean update(Texture texture) {

    synchronized (this) {

        if (buffer == null) {
            return false;
        }/*  w w  w  . j  a v  a  2  s.  c o m*/
        buffer.rewind();

        if (initAndScaleTexture) {
            scaleTexture(texture);
        }

        GL11.glBindTexture(GL11.GL_TEXTURE_2D, texture.getTextureId());
        GL11.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, videowidth, videoheight, pixelformat, dataformat,
                buffer);

        try {
            Util.checkGLError();
        } catch (OpenGLException e) {
            log.info("Error rendering video to texture. No glTexSubImage2D/OpenGL 1.2 support?");
            System.err.println(e.getMessage());
        }

        lastupdated = framecounter;

        return true;
    }
}

---

From source file:betterfonts.GlyphCache.java

License:Open Source License

/**
 * Update a portion of the current glyph cache texture using the contents of the glyphCacheImage with glTexSubImage2D().
 *
 * @param dirty The rectangular region in glyphCacheImage that has changed and needs to be copied into the texture
 *
 * @todo Add mip-mapping support here/*from   ww w .jav a2s.c  o m*/
 * @todo Test with bilinear texture interpolation and possibly add a 1 pixel transparent border around each glyph to avoid
 * bleedover when interpolation is active or add a small "fudge factor" to the UV coordinates like already n FontRenderer
 */
private void updateTexture(Rectangle dirty) {
    /* Only update OpenGL texture if changes were made to the texture */
    if (dirty != null) {
        /* Load imageBuffer with pixel data ready for transfer to OpenGL texture */
        updateImageBuffer(dirty.x, dirty.y, dirty.width, dirty.height);

        GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureName);
        GL11.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, dirty.x, dirty.y, dirty.width, dirty.height, GL11.GL_RGBA,
                GL11.GL_UNSIGNED_BYTE, imageBuffer);
    }
}

---

From source file:betterfonts.GlyphCache.java

License:Open Source License

/**
 * Allocate a new OpenGL texture for caching pre-rendered glyph images. The new texture is initialized to fully transparent
 * white so the individual glyphs images within can have a transparent border between them. The new texture remains bound
 * after returning from the function.//from www  .  j  a v  a  2  s  . co  m
 *
 * @todo use GL_ALPHA4 if anti-alias is turned off for even smaller textures
 */
private void allocateGlyphCacheTexture() {
    /* Initialize the background to all white but fully transparent. */
    glyphCacheGraphics.clearRect(0, 0, TEXTURE_WIDTH, TEXTURE_HEIGHT);

    /* Allocate new OpenGL texure */
    singleIntBuffer.clear();
    GL11.glGenTextures(singleIntBuffer);
    textureName = singleIntBuffer.get(0);

    /* Load imageBuffer with pixel data ready for transfer to OpenGL texture */
    updateImageBuffer(0, 0, TEXTURE_WIDTH, TEXTURE_HEIGHT);

    /*
     * Initialize texture with the now cleared BufferedImage. Using a texture with GL_ALPHA8 internal format may result in
     * faster rendering since the GPU has to only fetch 1 byte per texel instead of 4 with a regular RGBA texture.
     */
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureName);
    GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_ALPHA8, TEXTURE_WIDTH, TEXTURE_HEIGHT, 0, GL11.GL_RGBA,
            GL11.GL_UNSIGNED_BYTE, imageBuffer);

    /* Explicitely disable mipmap support becuase updateTexture() will only update the base level 0 */
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
}

---

From source file:betterfonts.StringCache.java

License:Open Source License

/**
 * Render a single-line string to the screen using the current OpenGL color. The (x,y) coordinates are of the uppet-left
 * corner of the string's bounding box, rather than the baseline position as is typical with fonts. This function will also
 * add the string to the cache so the next renderString() call with the same string is faster.
 *
 * @param str the string being rendered; it can contain color codes
 * @param x the x coordinate to draw at//w w  w . j  a  v  a 2s.  co  m
 * @param y the y coordinate to draw at
 * @param color the initial RGBA color to use when drawing the string; embedded color codes can override the RGB component
 * @param shadowFlag if true, color codes are replaces by a darker version used for drop shadows
 * @return the total advance (horizontal distance) of this string
 *
 * @todo Add optional NumericShaper to replace ASCII digits with locale specific ones
 * @todo Add support for the "k" code which randomly replaces letters on each render (used only by splash screen)
 * @todo Pre-sort by texture to minimize binds; can store colors per glyph in string cache
 * @todo Optimize the underline/strikethrough drawing to draw a single line for each run
 */
public int renderString(String str, int startX, int startY, int initialColor, boolean shadowFlag) {
    /* Check for invalid arguments */
    if (str == null || str.isEmpty()) {
        return 0;
    }

    /* Make sure the entire string is cached before rendering and return its glyph representation */
    Entry entry = cacheString(str);

    /* Adjust the baseline of the string because the startY coordinate in Minecraft is for the top of the string */
    startY += BASELINE_OFFSET;

    /* Color currently selected by color code; reapplied to Tessellator instance after glBindTexture() */
    int color = initialColor;

    /* Track which texture is currently bound to minimize the number of glBindTexture() and Tessellator.draw() calls needed */
    int boundTextureName = 0;

    /*
     * This color change will have no effect on the actual text (since colors are included in the Tessellator vertex
     * array), however GuiEditSign of all things depends on having the current color set to white when it renders its
     * "Edit sign message:" text. Otherwise, the sign which is rendered underneath would look too dark.
     */
    GL11.glColor3f(color >> 16 & 0xff, color >> 8 & 0xff, color & 0xff);

    /*
     * Enable GL_BLEND in case the font is drawn anti-aliased because Minecraft itself only enables blending for chat text
     * (so it can fade out), but not GUI text or signs. Minecraft uses multiple blend functions so it has to be specified here
     * as well for consistent blending. To reduce the overhead of OpenGL state changes and making native LWJGL calls, this
     * function doesn't try to save/restore the blending state. Hopefully everything else that depends on blending in Minecraft
     * will set its own state as needed.
     */
    if (antiAliasEnabled) {
        GL11.glEnable(GL11.GL_BLEND);
        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
    }

    /* Using the Tessellator to queue up data in a vertex array and then draw all at once should be faster than immediate mode */
    Tessellator tessellator = Tessellator.instance;
    tessellator.startDrawingQuads();
    tessellator.setColorRGBA(color >> 16 & 0xff, color >> 8 & 0xff, color & 0xff, color >> 24 & 0xff);

    /* The currently active font syle is needed to select the proper ASCII digit style for fast replacement */
    int fontStyle = Font.PLAIN;

    for (int glyphIndex = 0, colorIndex = 0; glyphIndex < entry.glyphs.length; glyphIndex++) {
        /*
         * If the original string had a color code at this glyph's position, then change the current GL color that gets added
         * to the vertex array. Note that only the RGB component of the color is replaced by a color code; the alpha component
         * of the original color passed into this function will remain. The while loop handles multiple consecutive color codes,
         * in which case only the last such color code takes effect.
         */
        while (colorIndex < entry.colors.length
                && entry.glyphs[glyphIndex].stringIndex >= entry.colors[colorIndex].stringIndex) {
            color = applyColorCode(entry.colors[colorIndex].colorCode, initialColor, shadowFlag);
            fontStyle = entry.colors[colorIndex].fontStyle;
            colorIndex++;
        }

        /* Select the current glyph's texture information and horizontal layout position within this string */
        Glyph glyph = entry.glyphs[glyphIndex];
        GlyphCache.Entry texture = glyph.texture;
        int glyphX = glyph.x;

        /*
         * Replace ASCII digits in the string with their respective glyphs; strings differing by digits are only cached once.
         * If the new replacement glyph has a different width than the original placeholder glyph (e.g. the '1' glyph is often
         * narrower than other digits), re-center the new glyph over the placeholder's position to minimize the visual impact
         * of the width mismatch.
         */
        char c = str.charAt(glyph.stringIndex);
        if (c >= '0' && c <= '9') {
            int oldWidth = texture.width;
            texture = digitGlyphs[fontStyle][c - '0'].texture;
            int newWidth = texture.width;
            glyphX += (oldWidth - newWidth) >> 1;
        }

        /*
         * Make sure the OpenGL texture storing this glyph's image is bound (if not already bound). All pending glyphs in the
         * Tessellator's vertex array must be drawn before switching textures, otherwise they would erroneously use the new
         * texture as well.
         */
        if (boundTextureName != texture.textureName) {
            tessellator.draw();
            tessellator.startDrawingQuads();
            tessellator.setColorRGBA(color >> 16 & 0xff, color >> 8 & 0xff, color & 0xff, color >> 24 & 0xff);

            GL11.glBindTexture(GL11.GL_TEXTURE_2D, texture.textureName);
            boundTextureName = texture.textureName;
        }

        /* The divide by 2.0F is needed to align with the scaled GUI coordinate system; startX/startY are already scaled */
        float x1 = startX + (glyphX) / 2.0F;
        float x2 = startX + (glyphX + texture.width) / 2.0F;
        float y1 = startY + (glyph.y) / 2.0F;
        float y2 = startY + (glyph.y + texture.height) / 2.0F;

        tessellator.addVertexWithUV(x1, y1, 0, texture.u1, texture.v1);
        tessellator.addVertexWithUV(x1, y2, 0, texture.u1, texture.v2);
        tessellator.addVertexWithUV(x2, y2, 0, texture.u2, texture.v2);
        tessellator.addVertexWithUV(x2, y1, 0, texture.u2, texture.v1);
    }

    /* Draw any remaining glyphs in the Tessellator's vertex array (there should be at least one glyph pending) */
    tessellator.draw();

    /* Draw strikethrough and underlines if the string uses them anywhere */
    if (entry.specialRender) {
        int renderStyle = 0;

        /* Use initial color passed to renderString(); disable texturing to draw solid color lines */
        color = initialColor;
        GL11.glDisable(GL11.GL_TEXTURE_2D);
        tessellator.startDrawingQuads();
        tessellator.setColorRGBA(color >> 16 & 0xff, color >> 8 & 0xff, color & 0xff, color >> 24 & 0xff);

        for (int glyphIndex = 0, colorIndex = 0; glyphIndex < entry.glyphs.length; glyphIndex++) {
            /*
             * If the original string had a color code at this glyph's position, then change the current GL color that gets added
             * to the vertex array. The while loop handles multiple consecutive color codes, in which case only the last such
             * color code takes effect.
             */
            while (colorIndex < entry.colors.length
                    && entry.glyphs[glyphIndex].stringIndex >= entry.colors[colorIndex].stringIndex) {
                color = applyColorCode(entry.colors[colorIndex].colorCode, initialColor, shadowFlag);
                renderStyle = entry.colors[colorIndex].renderStyle;
                colorIndex++;
            }

            /* Select the current glyph within this string for its layout position */
            Glyph glyph = entry.glyphs[glyphIndex];

            /* The strike/underlines are drawn beyond the glyph's width to include the extra space between glyphs */
            int glyphSpace = glyph.advance - glyph.texture.width;

            /* Draw underline under glyph if the style is enabled */
            if ((renderStyle & ColorCode.UNDERLINE) != 0) {
                /* The divide by 2.0F is needed to align with the scaled GUI coordinate system; startX/startY are already scaled */
                float x1 = startX + (glyph.x - glyphSpace) / 2.0F;
                float x2 = startX + (glyph.x + glyph.advance) / 2.0F;
                float y1 = startY + (UNDERLINE_OFFSET) / 2.0F;
                float y2 = startY + (UNDERLINE_OFFSET + UNDERLINE_THICKNESS) / 2.0F;

                tessellator.addVertex(x1, y1, 0);
                tessellator.addVertex(x1, y2, 0);
                tessellator.addVertex(x2, y2, 0);
                tessellator.addVertex(x2, y1, 0);
            }

            /* Draw strikethrough in the middle of glyph if the style is enabled */
            if ((renderStyle & ColorCode.STRIKETHROUGH) != 0) {
                /* The divide by 2.0F is needed to align with the scaled GUI coordinate system; startX/startY are already scaled */
                float x1 = startX + (glyph.x - glyphSpace) / 2.0F;
                float x2 = startX + (glyph.x + glyph.advance) / 2.0F;
                float y1 = startY + (STRIKETHROUGH_OFFSET) / 2.0F;
                float y2 = startY + (STRIKETHROUGH_OFFSET + STRIKETHROUGH_THICKNESS) / 2.0F;

                tessellator.addVertex(x1, y1, 0);
                tessellator.addVertex(x1, y2, 0);
                tessellator.addVertex(x2, y2, 0);
                tessellator.addVertex(x2, y1, 0);
            }
        }

        /* Finish drawing the last strikethrough/underline segments */
        tessellator.draw();
        GL11.glEnable(GL11.GL_TEXTURE_2D);
    }

    /* Return total horizontal advance (slightly wider than the bounding box, but close enough for centering strings) */
    return entry.advance / 2;
}

---

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