Example usage for org.lwjgl.opengl GL11 glBegin

Introduction

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

Prototype

public static native void glBegin(@NativeType("GLenum") int mode);

Source Link

Document

Begins the definition of vertex attributes of a sequence of primitives to be transferred to the GL.

Usage

From source file:org.fenggui.binding.render.lwjgl.LWJGLOpenGL.java

License:Open Source License

public void startPoints() {
    GL11.glBegin(GL11.GL_POINTS);
}

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From source file:org.free.jake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_Char(int x, int y, int num) {

    num &= 255;// ww  w .j  a  va2  s.  c  o m

    if ((num & 127) == 32) {
        return; // space
    }
    if (y <= -8) {
        return; // totally off screen
    }
    int row = num >> 4;
    int col = num & 15;

    float frow = row * 0.0625f;
    float fcol = col * 0.0625f;
    float size = 0.0625f;

    GL_Bind(draw_chars.texnum);

    GL11.glBegin(GL11.GL_QUADS);
    GL11.glTexCoord2f(fcol, frow);
    GL11.glVertex2f(x, y);
    GL11.glTexCoord2f(fcol + size, frow);
    GL11.glVertex2f(x + 8, y);
    GL11.glTexCoord2f(fcol + size, frow + size);
    GL11.glVertex2f(x + 8, y + 8);
    GL11.glTexCoord2f(fcol, frow + size);
    GL11.glVertex2f(x, y + 8);
    GL11.glEnd();
}

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From source file:org.free.jake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_StretchPic(int x, int y, int w, int h, String pic) {

    image_t image;/*from ww  w.ja v  a2s. c o  m*/

    image = Draw_FindPic(pic);
    if (image == null) {
        VID.Printf(Defines.PRINT_ALL, "Can't find pic: " + pic + '\n');
        return;
    }

    if (scrap_dirty) {
        Scrap_Upload();
    }

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha) {
        GL11.glDisable(GL11.GL_ALPHA_TEST);
    }

    GL_Bind(image.texnum);
    GL11.glBegin(GL11.GL_QUADS);
    GL11.glTexCoord2f(image.sl, image.tl);
    GL11.glVertex2f(x, y);
    GL11.glTexCoord2f(image.sh, image.tl);
    GL11.glVertex2f(x + w, y);
    GL11.glTexCoord2f(image.sh, image.th);
    GL11.glVertex2f(x + w, y + h);
    GL11.glTexCoord2f(image.sl, image.th);
    GL11.glVertex2f(x, y + h);
    GL11.glEnd();

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha) {
        GL11.glEnable(GL11.GL_ALPHA_TEST);
    }
}

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From source file:org.free.jake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_Pic(int x, int y, String pic) {
    image_t image;/*from w w w . j  av  a 2s .c  o m*/

    image = Draw_FindPic(pic);
    if (image == null) {
        VID.Printf(Defines.PRINT_ALL, "Can't find pic: " + pic + '\n');
        return;
    }
    if (scrap_dirty) {
        Scrap_Upload();
    }

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha) {
        GL11.glDisable(GL11.GL_ALPHA_TEST);
    }

    GL_Bind(image.texnum);

    GL11.glBegin(GL11.GL_QUADS);
    GL11.glTexCoord2f(image.sl, image.tl);
    GL11.glVertex2f(x, y);
    GL11.glTexCoord2f(image.sh, image.tl);
    GL11.glVertex2f(x + image.width, y);
    GL11.glTexCoord2f(image.sh, image.th);
    GL11.glVertex2f(x + image.width, y + image.height);
    GL11.glTexCoord2f(image.sl, image.th);
    GL11.glVertex2f(x, y + image.height);
    GL11.glEnd();

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha) {
        GL11.glEnable(GL11.GL_ALPHA_TEST);
    }
}

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From source file:org.free.jake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_TileClear(int x, int y, int w, int h, String pic) {
    image_t image;/*  w w  w .java  2s.  c o  m*/

    image = Draw_FindPic(pic);
    if (image == null) {
        VID.Printf(Defines.PRINT_ALL, "Can't find pic: " + pic + '\n');
        return;
    }

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha) {
        GL11.glDisable(GL11.GL_ALPHA_TEST);
    }

    GL_Bind(image.texnum);
    GL11.glBegin(GL11.GL_QUADS);
    GL11.glTexCoord2f(x / 64.0f, y / 64.0f);
    GL11.glVertex2f(x, y);
    GL11.glTexCoord2f((x + w) / 64.0f, y / 64.0f);
    GL11.glVertex2f(x + w, y);
    GL11.glTexCoord2f((x + w) / 64.0f, (y + h) / 64.0f);
    GL11.glVertex2f(x + w, y + h);
    GL11.glTexCoord2f(x / 64.0f, (y + h) / 64.0f);
    GL11.glVertex2f(x, y + h);
    GL11.glEnd();

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha) {
        GL11.glEnable(GL11.GL_ALPHA_TEST);
    }
}

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From source file:org.free.jake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_Fill(int x, int y, int w, int h, int colorIndex) {

    if (colorIndex > 255) {
        Com.Error(Defines.ERR_FATAL, "Draw_Fill: bad color");
    }/*  w w w .j av  a2s  .  co  m*/

    GL11.glDisable(GL11.GL_TEXTURE_2D);

    int color = d_8to24table[colorIndex];

    GL11.glColor3ub((byte) ((color) & 0xff), // r
            (byte) ((color >> 8) & 0xff), // g
            (byte) ((color >> 16) & 0xff) // b
    );

    GL11.glBegin(GL11.GL_QUADS);

    GL11.glVertex2f(x, y);
    GL11.glVertex2f(x + w, y);
    GL11.glVertex2f(x + w, y + h);
    GL11.glVertex2f(x, y + h);

    GL11.glEnd();
    GL11.glColor3f(1, 1, 1);
    GL11.glEnable(GL11.GL_TEXTURE_2D);
}

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From source file:org.free.jake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_StretchRaw(int x, int y, int w, int h, int cols, int rows, byte[] data) {
    int i, j, trows;
    int sourceIndex;
    int frac, fracstep;
    float hscale;
    int row;/*from w  ww. j  a  v  a 2s.  c  om*/
    float t;

    GL_Bind(0);

    if (rows <= 256) {
        hscale = 1;
        trows = rows;
    } else {
        hscale = rows / 256.0f;
        trows = 256;
    }
    t = rows * hscale / 256;

    if (!qglColorTableEXT) {
        //int[] image32 = new int[256*256];
        image32.clear();
        int destIndex = 0;

        for (i = 0; i < trows; i++) {
            row = (int) (i * hscale);
            if (row > rows) {
                break;
            }
            sourceIndex = cols * row;
            destIndex = i * 256;
            fracstep = cols * 0x10000 / 256;
            frac = fracstep >> 1;
            for (j = 0; j < 256; j++) {
                image32.put(destIndex + j, r_rawpalette[data[sourceIndex + (frac >> 16)] & 0xff]);
                frac += fracstep;
            }
        }
        GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, gl_tex_solid_format, 256, 256, 0, GL11.GL_RGBA,
                GL11.GL_UNSIGNED_BYTE, image32);
    } else {
        //byte[] image8 = new byte[256*256];
        image8.clear();
        int destIndex = 0;

        for (i = 0; i < trows; i++) {
            row = (int) (i * hscale);
            if (row > rows) {
                break;
            }
            sourceIndex = cols * row;
            destIndex = i * 256;
            fracstep = cols * 0x10000 / 256;
            frac = fracstep >> 1;
            for (j = 0; j < 256; j++) {
                image8.put(destIndex + j, data[sourceIndex + (frac >> 16)]);
                frac += fracstep;
            }
        }

        GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL_COLOR_INDEX8_EXT, 256, 256, 0, GL11.GL_COLOR_INDEX,
                GL11.GL_UNSIGNED_BYTE, image8);
    }
    GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
    GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);

    if ((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0)) {
        GL11.glDisable(GL11.GL_ALPHA_TEST);
    }

    GL11.glBegin(GL11.GL_QUADS);
    GL11.glTexCoord2f(0, 0);
    GL11.glVertex2f(x, y);
    GL11.glTexCoord2f(1, 0);
    GL11.glVertex2f(x + w, y);
    GL11.glTexCoord2f(1, t);
    GL11.glVertex2f(x + w, y + h);
    GL11.glTexCoord2f(0, t);
    GL11.glVertex2f(x, y + h);
    GL11.glEnd();

    if ((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0)) {
        GL11.glEnable(GL11.GL_ALPHA_TEST);
    }
}

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From source file:org.free.jake2.render.lwjgl.Light.java

License:Open Source License

/**
 * R_RenderDlight//from   w  w  w. j a v  a2 s. c  o  m
 */
void R_RenderDlight(dlight_t light) {
    float rad = light.intensity * 0.35f;

    Math3D.VectorSubtract(light.origin, r_origin, v);

    GL11.glBegin(GL11.GL_TRIANGLE_FAN);
    GL11.glColor3f(light.color[0] * 0.2f, light.color[1] * 0.2f, light.color[2] * 0.2f);
    int i;
    for (i = 0; i < 3; i++) {
        v[i] = light.origin[i] - vpn[i] * rad;
    }

    GL11.glVertex3f(v[0], v[1], v[2]);
    GL11.glColor3f(0, 0, 0);

    int j;
    float a;
    for (i = 16; i >= 0; i--) {
        a = (float) (i / 16.0f * Math.PI * 2);
        for (j = 0; j < 3; j++) {
            v[j] = (float) (light.origin[j] + vright[j] * Math.cos(a) * rad + vup[j] * Math.sin(a) * rad);
        }
        GL11.glVertex3f(v[0], v[1], v[2]);
    }
    GL11.glEnd();
}

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From source file:org.free.jake2.render.lwjgl.Main.java

License:Open Source License

/**
 * R_DrawSpriteModel/*from w w  w .  j  a  v  a2s . co m*/
 */
void R_DrawSpriteModel(entity_t e) {
    float alpha = 1.0F;

    qfiles.dsprframe_t frame;
    qfiles.dsprite_t psprite;

    // don't even bother culling, because it's just a single
    // polygon without a surface cache

    psprite = (qfiles.dsprite_t) currentmodel.extradata;

    e.frame %= psprite.numframes;

    frame = psprite.frames[e.frame];

    if ((e.flags & Defines.RF_TRANSLUCENT) != 0) {
        alpha = e.alpha;
    }

    if (alpha != 1.0F) {
        GL11.glEnable(GL11.GL_BLEND);
    }

    GL11.glColor4f(1, 1, 1, alpha);

    GL_Bind(currentmodel.skins[e.frame].texnum);

    GL_TexEnv(GL11.GL_MODULATE);

    if (alpha == 1.0) {
        GL11.glEnable(GL11.GL_ALPHA_TEST);
    } else {
        GL11.glDisable(GL11.GL_ALPHA_TEST);
    }

    GL11.glBegin(GL11.GL_QUADS);

    GL11.glTexCoord2f(0, 1);
    Math3D.VectorMA(e.origin, -frame.origin_y, vup, point);
    Math3D.VectorMA(point, -frame.origin_x, vright, point);
    GL11.glVertex3f(point[0], point[1], point[2]);

    GL11.glTexCoord2f(0, 0);
    Math3D.VectorMA(e.origin, frame.height - frame.origin_y, vup, point);
    Math3D.VectorMA(point, -frame.origin_x, vright, point);
    GL11.glVertex3f(point[0], point[1], point[2]);

    GL11.glTexCoord2f(1, 0);
    Math3D.VectorMA(e.origin, frame.height - frame.origin_y, vup, point);
    Math3D.VectorMA(point, frame.width - frame.origin_x, vright, point);
    GL11.glVertex3f(point[0], point[1], point[2]);

    GL11.glTexCoord2f(1, 1);
    Math3D.VectorMA(e.origin, -frame.origin_y, vup, point);
    Math3D.VectorMA(point, frame.width - frame.origin_x, vright, point);
    GL11.glVertex3f(point[0], point[1], point[2]);

    GL11.glEnd();

    GL11.glDisable(GL11.GL_ALPHA_TEST);
    GL_TexEnv(GL11.GL_REPLACE);

    if (alpha != 1.0F) {
        GL11.glDisable(GL11.GL_BLEND);
    }

    GL11.glColor4f(1, 1, 1, 1);
}

---

From source file:org.free.jake2.render.lwjgl.Main.java

License:Open Source License

/**
 * R_PolyBlend/*from  w  w  w .  jav  a 2  s .  c  o  m*/
 */
void R_PolyBlend() {
    if (gl_polyblend.value == 0.0f) {
        return;
    }

    if (v_blend[3] == 0.0f) {
        return;
    }

    GL11.glDisable(GL11.GL_ALPHA_TEST);
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glDisable(GL11.GL_DEPTH_TEST);
    GL11.glDisable(GL11.GL_TEXTURE_2D);

    GL11.glLoadIdentity();

    // FIXME: get rid of these
    GL11.glRotatef(-90, 1, 0, 0); // put Z going up
    GL11.glRotatef(90, 0, 0, 1); // put Z going up

    GL11.glColor4f(v_blend[0], v_blend[1], v_blend[2], v_blend[3]);

    GL11.glBegin(GL11.GL_QUADS);

    GL11.glVertex3f(10, 100, 100);
    GL11.glVertex3f(10, -100, 100);
    GL11.glVertex3f(10, -100, -100);
    GL11.glVertex3f(10, 100, -100);
    GL11.glEnd();

    GL11.glDisable(GL11.GL_BLEND);
    GL11.glEnable(GL11.GL_TEXTURE_2D);
    GL11.glEnable(GL11.GL_ALPHA_TEST);

    GL11.glColor4f(1, 1, 1, 1);
}

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