Example usage for org.lwjgl.opengl GL11 glBegin

List of usage examples for org.lwjgl.opengl GL11 glBegin

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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:kuake2.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;//from w  w w.  j a va  2s. co 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);
}

From source file:kuake2.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");

    GL11.glDisable(GL11.GL_TEXTURE_2D);//  www.  j  a va2 s  .co m

    int color = d_8to24table[colorIndex];

    GL11.glColor3ub((byte) ((color >> 0) & 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);
}

From source file:kuake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_FadeScreen() {
    GL11.glEnable(GL11.GL_BLEND);/*from w  ww.  j ava2s.c o m*/
    GL11.glDisable(GL11.GL_TEXTURE_2D);
    GL11.glColor4f(0, 0, 0, 0.8f);
    GL11.glBegin(GL11.GL_QUADS);

    GL11.glVertex2f(0, 0);
    GL11.glVertex2f(vid.width, 0);
    GL11.glVertex2f(vid.width, vid.height);
    GL11.glVertex2f(0, vid.height);

    GL11.glEnd();
    GL11.glColor4f(1, 1, 1, 1);
    GL11.glEnable(GL11.GL_TEXTURE_2D);
    GL11.glDisable(GL11.GL_BLEND);
}

From source file:kuake2.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;/*www. j a  v a2 s .c o  m*/
    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);
}

From source file:kuake2.render.lwjgl.Light.java

License:Open Source License

/**
 * R_RenderDlight/*from   w w w  .j  a v a 2 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();
}

From source file:kuake2.render.lwjgl.Main.java

License:Open Source License

/**
 * R_DrawSpriteModel//  w  ww  . j  av  a 2s.c om
 */
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:kuake2.render.lwjgl.Main.java

License:Open Source License

/**
 * R_DrawNullModel//from   w  ww .j  a va 2s.c  o m
 */
void R_DrawNullModel() {
    if ((currententity.flags & Defines.RF_FULLBRIGHT) != 0) {
        // cwei wollte blau: shadelight[0] = shadelight[1] = shadelight[2] = 1.0F;
        shadelight[0] = shadelight[1] = shadelight[2] = 0.0F;
        shadelight[2] = 0.8F;
    } else {
        R_LightPoint(currententity.origin, shadelight);
    }

    GL11.glPushMatrix();
    R_RotateForEntity(currententity);

    GL11.glDisable(GL11.GL_TEXTURE_2D);
    GL11.glColor3f(shadelight[0], shadelight[1], shadelight[2]);

    // this replaces the TRIANGLE_FAN
    //glut.glutWireCube(gl, 20);

    GL11.glBegin(GL11.GL_TRIANGLE_FAN);
    GL11.glVertex3f(0, 0, -16);
    int i;
    for (i = 0; i <= 4; i++) {
        GL11.glVertex3f((float) (16.0f * Math.cos(i * Math.PI / 2)),
                (float) (16.0f * Math.sin(i * Math.PI / 2)), 0.0f);
    }
    GL11.glEnd();

    GL11.glBegin(GL11.GL_TRIANGLE_FAN);
    GL11.glVertex3f(0, 0, 16);
    for (i = 4; i >= 0; i--) {
        GL11.glVertex3f((float) (16.0f * Math.cos(i * Math.PI / 2)),
                (float) (16.0f * Math.sin(i * Math.PI / 2)), 0.0f);
    }
    GL11.glEnd();

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

From source file:kuake2.render.lwjgl.Main.java

License:Open Source License

/**
 * GL_DrawParticles/*from ww w . j a  v  a2 s  .c  o  m*/
 */
void GL_DrawParticles(int num_particles) {
    float origin_x, origin_y, origin_z;

    Math3D.VectorScale(vup, 1.5f, up);
    Math3D.VectorScale(vright, 1.5f, right);

    GL_Bind(r_particletexture.texnum);
    GL11.glDepthMask(false); // no z buffering
    GL11.glEnable(GL11.GL_BLEND);
    GL_TexEnv(GL11.GL_MODULATE);

    GL11.glBegin(GL11.GL_TRIANGLES);

    FloatBuffer sourceVertices = particle_t.vertexArray;
    IntBuffer sourceColors = particle_t.colorArray;
    float scale;
    int color;
    for (int j = 0, i = 0; i < num_particles; i++) {
        origin_x = sourceVertices.get(j++);
        origin_y = sourceVertices.get(j++);
        origin_z = sourceVertices.get(j++);

        // hack a scale up to keep particles from disapearing
        scale = (origin_x - r_origin[0]) * vpn[0] + (origin_y - r_origin[1]) * vpn[1]
                + (origin_z - r_origin[2]) * vpn[2];

        scale = (scale < 20) ? 1 : 1 + scale * 0.004f;

        color = sourceColors.get(i);

        GL11.glColor4ub((byte) ((color) & 0xFF), (byte) ((color >> 8) & 0xFF), (byte) ((color >> 16) & 0xFF),
                (byte) ((color >>> 24)));
        // first vertex
        GL11.glTexCoord2f(0.0625f, 0.0625f);
        GL11.glVertex3f(origin_x, origin_y, origin_z);
        // second vertex
        GL11.glTexCoord2f(1.0625f, 0.0625f);
        GL11.glVertex3f(origin_x + up[0] * scale, origin_y + up[1] * scale, origin_z + up[2] * scale);
        // third vertex
        GL11.glTexCoord2f(0.0625f, 1.0625f);
        GL11.glVertex3f(origin_x + right[0] * scale, origin_y + right[1] * scale, origin_z + right[2] * scale);
    }
    GL11.glEnd();

    GL11.glDisable(GL11.GL_BLEND);
    GL11.glColor4f(1, 1, 1, 1);
    GL11.glDepthMask(true); // back to normal Z buffering
    GL_TexEnv(GL11.GL_REPLACE);
}

From source file:kuake2.render.lwjgl.Main.java

License:Open Source License

/**
 * R_PolyBlend//ww  w  .j  av a  2  s. c om
 */
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);
}

From source file:kuake2.render.lwjgl.Main.java

License:Open Source License

/**
 * R_DrawBeam//from  ww w .  j  ava2 s.com
 */
void R_DrawBeam(entity_t e) {
    oldorigin[0] = e.oldorigin[0];
    oldorigin[1] = e.oldorigin[1];
    oldorigin[2] = e.oldorigin[2];

    origin[0] = e.origin[0];
    origin[1] = e.origin[1];
    origin[2] = e.origin[2];

    normalized_direction[0] = direction[0] = oldorigin[0] - origin[0];
    normalized_direction[1] = direction[1] = oldorigin[1] - origin[1];
    normalized_direction[2] = direction[2] = oldorigin[2] - origin[2];

    if (Math3D.VectorNormalize(normalized_direction) == 0.0f)
        return;

    Math3D.PerpendicularVector(perpvec, normalized_direction);
    Math3D.VectorScale(perpvec, e.frame / 2, perpvec);

    for (int i = 0; i < 6; i++) {
        Math3D.RotatePointAroundVector(start_points[i], normalized_direction, perpvec,
                (360.0f / NUM_BEAM_SEGS) * i);

        Math3D.VectorAdd(start_points[i], origin, start_points[i]);
        Math3D.VectorAdd(start_points[i], direction, end_points[i]);
    }

    GL11.glDisable(GL11.GL_TEXTURE_2D);
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glDepthMask(false);

    float r = (d_8to24table[e.skinnum & 0xFF]) & 0xFF;
    float g = (d_8to24table[e.skinnum & 0xFF] >> 8) & 0xFF;
    float b = (d_8to24table[e.skinnum & 0xFF] >> 16) & 0xFF;

    r *= 1 / 255.0f;
    g *= 1 / 255.0f;
    b *= 1 / 255.0f;

    GL11.glColor4f(r, g, b, e.alpha);

    GL11.glBegin(GL11.GL_TRIANGLE_STRIP);

    float[] v;

    for (int i = 0; i < NUM_BEAM_SEGS; i++) {
        v = start_points[i];
        GL11.glVertex3f(v[0], v[1], v[2]);
        v = end_points[i];
        GL11.glVertex3f(v[0], v[1], v[2]);
        v = start_points[(i + 1) % NUM_BEAM_SEGS];
        GL11.glVertex3f(v[0], v[1], v[2]);
        v = end_points[(i + 1) % NUM_BEAM_SEGS];
        GL11.glVertex3f(v[0], v[1], v[2]);
    }
    GL11.glEnd();

    GL11.glEnable(GL11.GL_TEXTURE_2D);
    GL11.glDisable(GL11.GL_BLEND);
    GL11.glDepthMask(true);
}