-/*
-=============================================================
-
- ALIAS MODELS
-
-=============================================================
-*/
-
-extern vec3_t softwaretransform_x;
-extern vec3_t softwaretransform_y;
-extern vec3_t softwaretransform_z;
-extern vec_t softwaretransform_scale;
-extern vec3_t softwaretransform_offset;
-void R_AliasLerpVerts(int vertcount, float lerp, trivert2 *verts1, vec3_t scale1, vec3_t translate1, trivert2 *verts2, vec3_t scale2, vec3_t translate2)
-{
- int i;
- vec3_t point, matrix_x, matrix_y, matrix_z;
- float *av, *avn;
- av = aliasvert;
- avn = aliasvertnorm;
- if (lerp < 0) lerp = 0;
- if (lerp > 1) lerp = 1;
- if (lerp != 0)
- {
- float ilerp, ilerp127, lerp127, scalex1, scalex2, translatex, scaley1, scaley2, translatey, scalez1, scalez2, translatez;
- if (lerp < 0) lerp = 0;
- if (lerp > 1) lerp = 1;
- ilerp = 1 - lerp;
- ilerp127 = ilerp * (1.0 / 127.0);
- lerp127 = lerp * (1.0 / 127.0);
- VectorScale(softwaretransform_x, softwaretransform_scale, matrix_x);
- VectorScale(softwaretransform_y, softwaretransform_scale, matrix_y);
- VectorScale(softwaretransform_z, softwaretransform_scale, matrix_z);
- // calculate combined interpolation variables
- scalex1 = scale1[0] * ilerp;scalex2 = scale2[0] * lerp;translatex = translate1[0] * ilerp + translate2[0] * lerp;
- scaley1 = scale1[1] * ilerp;scaley2 = scale2[1] * lerp;translatey = translate1[1] * ilerp + translate2[1] * lerp;
- scalez1 = scale1[2] * ilerp;scalez2 = scale2[2] * lerp;translatez = translate1[2] * ilerp + translate2[2] * lerp;
- // generate vertices
- for (i = 0;i < vertcount;i++)
- {
- // rotate, scale, and translate the vertex locations
- point[0] = verts1->v[0] * scalex1 + verts2->v[0] * scalex2 + translatex;
- point[1] = verts1->v[1] * scaley1 + verts2->v[1] * scaley2 + translatey;
- point[2] = verts1->v[2] * scalez1 + verts2->v[2] * scalez2 + translatez;
- *av++ = point[0] * matrix_x[0] + point[1] * matrix_y[0] + point[2] * matrix_z[0] + softwaretransform_offset[0];
- *av++ = point[0] * matrix_x[1] + point[1] * matrix_y[1] + point[2] * matrix_z[1] + softwaretransform_offset[1];
- *av++ = point[0] * matrix_x[2] + point[1] * matrix_y[2] + point[2] * matrix_z[2] + softwaretransform_offset[2];
- // rotate the normals
- point[0] = verts1->n[0] * ilerp127 + verts2->n[0] * lerp127;
- point[1] = verts1->n[1] * ilerp127 + verts2->n[1] * lerp127;
- point[2] = verts1->n[2] * ilerp127 + verts2->n[2] * lerp127;
- *avn++ = point[0] * softwaretransform_x[0] + point[1] * softwaretransform_y[0] + point[2] * softwaretransform_z[0];
- *avn++ = point[0] * softwaretransform_x[1] + point[1] * softwaretransform_y[1] + point[2] * softwaretransform_z[1];
- *avn++ = point[0] * softwaretransform_x[2] + point[1] * softwaretransform_y[2] + point[2] * softwaretransform_z[2];
- verts1++;verts2++;
- }
- }
- else
- {
- float i127;
- i127 = 1.0f / 127.0f;
- VectorScale(softwaretransform_x, softwaretransform_scale, matrix_x);
- VectorScale(softwaretransform_y, softwaretransform_scale, matrix_y);
- VectorScale(softwaretransform_z, softwaretransform_scale, matrix_z);
- // generate vertices
- for (i = 0;i < vertcount;i++)
- {
- // rotate, scale, and translate the vertex locations
- point[0] = verts1->v[0] * scale1[0] + translate1[0];
- point[1] = verts1->v[1] * scale1[1] + translate1[1];
- point[2] = verts1->v[2] * scale1[2] + translate1[2];
- *av++ = point[0] * matrix_x[0] + point[1] * matrix_y[0] + point[2] * matrix_z[0] + softwaretransform_offset[0];
- *av++ = point[0] * matrix_x[1] + point[1] * matrix_y[1] + point[2] * matrix_z[1] + softwaretransform_offset[1];
- *av++ = point[0] * matrix_x[2] + point[1] * matrix_y[2] + point[2] * matrix_z[2] + softwaretransform_offset[2];
- // rotate the normals
- point[0] = verts1->n[0] * i127;
- point[1] = verts1->n[1] * i127;
- point[2] = verts1->n[2] * i127;
- *avn++ = point[0] * softwaretransform_x[0] + point[1] * softwaretransform_y[0] + point[2] * softwaretransform_z[0];
- *avn++ = point[0] * softwaretransform_x[1] + point[1] * softwaretransform_y[1] + point[2] * softwaretransform_z[1];
- *avn++ = point[0] * softwaretransform_x[2] + point[1] * softwaretransform_y[2] + point[2] * softwaretransform_z[2];
- verts1++;
- }
- }
-}
-
-/*
-=================
-R_DrawAliasFrame
-
-=================
-*/
-extern vec3_t lightspot;
-void R_LightModel(int numverts, vec3_t center);
-extern cvar_t gl_vertexarrays;
-void R_DrawAliasFrame (aliashdr_t *paliashdr)
-{
- int i, pose, frame = currententity->frame;
- float lerpscale, lerp;
-
- softwaretransformforentity(currententity);
-
- if ((frame >= paliashdr->numframes) || (frame < 0))
- {
- Con_DPrintf ("R_AliasSetupFrame: no such frame %d\n", frame);
- frame = 0;
- }
-
- pose = paliashdr->frames[frame].firstpose;
-
- if (paliashdr->frames[frame].numposes > 1)
- {
- lerpscale = 1.0 / paliashdr->frames[frame].interval;
- pose += (int)(cl.time * lerpscale) % paliashdr->frames[frame].numposes;
- }
- else
- lerpscale = 10.0;
-
- lerp = R_CalcAnimLerp(pose, lerpscale);
-
- R_AliasLerpVerts(paliashdr->numverts, lerp, (trivert2 *)((byte *)paliashdr + paliashdr->posedata) + currententity->draw_lastpose * paliashdr->numverts, paliashdr->scale, paliashdr->scale_origin, (trivert2 *)((byte *)paliashdr + paliashdr->posedata) + currententity->draw_pose * paliashdr->numverts, paliashdr->scale, paliashdr->scale_origin);
-
- R_LightModel(paliashdr->numverts, currententity->origin);
-
- glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
- glShadeModel(GL_SMOOTH);
- if (currententity->effects & EF_ADDITIVE)
- {
- glBlendFunc(GL_SRC_ALPHA, GL_ONE); // additive rendering
- glEnable(GL_BLEND);
- glDepthMask(0);
- }
- else if (modelalpha != 1.0)
- {
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glEnable(GL_BLEND);
- glDepthMask(0);
- }
- else
- {
- glDisable(GL_BLEND);
- glDepthMask(1);
- }
-
- if (gl_vertexarrays.value)
- {
- // LordHavoc: I would use InterleavedArrays here,
- // but the texture coordinates are a seperate array,
- // and it would be wasteful to copy them into the main array...
- // glColor4f(shadecolor[0], shadecolor[1], shadecolor[2], modelalpha);
- qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
- qglColorPointer(4, GL_UNSIGNED_BYTE, 0, aliasvertcolor);
- glEnableClientState(GL_VERTEX_ARRAY);
- glEnableClientState(GL_COLOR_ARRAY);
-
- // draw the front faces
- qglTexCoordPointer(2, GL_FLOAT, 0, (void *)((int) paliashdr->texcoords + (int) paliashdr));
- glEnableClientState(GL_TEXTURE_COORD_ARRAY);
- qglDrawElements(GL_TRIANGLES, paliashdr->frontfaces * 3, GL_UNSIGNED_SHORT, (void *)((int) paliashdr->vertindices + (int) paliashdr));
- glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-
- // draw the back faces
- qglTexCoordPointer(2, GL_FLOAT, 0, (void *)((int) paliashdr->texcoords + sizeof(float[2]) * paliashdr->numverts + (int) paliashdr));
- glEnableClientState(GL_TEXTURE_COORD_ARRAY);
- qglDrawElements(GL_TRIANGLES, paliashdr->backfaces * 3, GL_UNSIGNED_SHORT, (void *)((int) paliashdr->vertindices + sizeof(unsigned short[3]) * paliashdr->frontfaces + (int) paliashdr));
- glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-
- glDisableClientState(GL_COLOR_ARRAY);
- glDisableClientState(GL_VERTEX_ARRAY);
- }
- else
- {
- unsigned short *in, index;
- float *tex;
- in = (void *)((int) paliashdr->vertindices + (int) paliashdr);
- glBegin(GL_TRIANGLES);
- // draw the front faces
- tex = (void *)((int) paliashdr->texcoords + (int) paliashdr);
- //if (isG200)
- //{
- for (i = 0;i < paliashdr->frontfaces * 3;i++)
- {
- index = *in++;
- glTexCoord2f(tex[index*2], tex[index*2+1]);
- glColor4f(aliasvertcolor[index*4] * (1.0f / 255.0f), aliasvertcolor[index*4+1] * (1.0f / 255.0f), aliasvertcolor[index*4+2] * (1.0f / 255.0f), aliasvertcolor[index*4+3] * (1.0f / 255.0f));
- glVertex3fv(&aliasvert[index*3]);
- }
- /*
- }
- else
- {
- for (i = 0;i < paliashdr->frontfaces * 3;i++)
- {
- index = *in++;
- glTexCoord2f(tex[index*2], tex[index*2+1]);
- glColor4ub(aliasvertcolor[index*4], aliasvertcolor[index*4+1], aliasvertcolor[index*4+2], aliasvertcolor[index*4+3]);
- glVertex3fv(&aliasvert[index*3]);
- }
- }
- */
- // draw the back faces
- tex += 2 * paliashdr->numverts;
- //if (isG200)
- //{
- for (i = 0;i < paliashdr->backfaces * 3;i++)
- {
- index = *in++;
- glTexCoord2f(tex[index*2], tex[index*2+1]);
- glColor4f(aliasvertcolor[index*4] * (1.0f / 255.0f), aliasvertcolor[index*4+1] * (1.0f / 255.0f), aliasvertcolor[index*4+2] * (1.0f / 255.0f), aliasvertcolor[index*4+3] * (1.0f / 255.0f));
- glVertex3fv(&aliasvert[index*3]);
- }
- /*
- }
- else
- {
- for (i = 0;i < paliashdr->backfaces * 3;i++)
- {
- index = *in++;
- glTexCoord2f(tex[index*2], tex[index*2+1]);
- glColor4ub(aliasvertcolor[index*4], aliasvertcolor[index*4+1], aliasvertcolor[index*4+2], aliasvertcolor[index*4+3]);
- glVertex3fv(&aliasvert[index*3]);
- }
- }
- */
- glEnd();
- }
-
- if (fogenabled)
- {
- vec3_t diff;
- glDisable (GL_TEXTURE_2D);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glEnable (GL_BLEND);
- glDepthMask(0); // disable zbuffer updates
-
- VectorSubtract(currententity->origin, r_refdef.vieworg, diff);
- glColor4f(fogcolor[0], fogcolor[1], fogcolor[2], exp(fogdensity/DotProduct(diff,diff)));
-
- if (gl_vertexarrays.value)
- {
- qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
- glEnableClientState(GL_VERTEX_ARRAY);
- qglDrawElements(GL_TRIANGLES, paliashdr->numtris * 3, GL_UNSIGNED_SHORT, (void *)((int) paliashdr->vertindices + (int) paliashdr));
- glDisableClientState(GL_VERTEX_ARRAY);
- }
- else
- {
- unsigned short *in;
- in = (void *)((int) paliashdr->vertindices + (int) paliashdr);
- glBegin(GL_TRIANGLES);
- for (i = 0;i < paliashdr->numtris * 3;i++)
- glVertex3fv(&aliasvert[*in++ * 3]);
- glEnd();
- }
-
- glEnable (GL_TEXTURE_2D);
- glColor3f (1,1,1);
- }
-
- if (!fogenabled && r_shadows.value && !(currententity->effects & EF_ADDITIVE) && currententity != &cl.viewent)
- {
- // flatten it to make a shadow
- float *av = aliasvert + 2, l = lightspot[2] + 0.125;
- av = aliasvert + 2;
- for (i = 0;i < paliashdr->numverts;i++, av+=3)
- if (*av > l)
- *av = l;
- glDisable (GL_TEXTURE_2D);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glEnable (GL_BLEND);
- glDepthMask(0); // disable zbuffer updates
- glColor4f (0,0,0,0.5 * modelalpha);
-
- if (gl_vertexarrays.value)
- {
- qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
- glEnableClientState(GL_VERTEX_ARRAY);
- qglDrawElements(GL_TRIANGLES, paliashdr->numtris * 3, GL_UNSIGNED_SHORT, (void *)((int) paliashdr->vertindices + (int) paliashdr));
- glDisableClientState(GL_VERTEX_ARRAY);
- }
- else
- {
- unsigned short *in;
- in = (void *)((int) paliashdr->vertindices + (int) paliashdr);
- glBegin(GL_TRIANGLES);
- for (i = 0;i < paliashdr->numtris * 3;i++)
- glVertex3fv(&aliasvert[*in++ * 3]);
- glEnd();
- }
-
- glEnable (GL_TEXTURE_2D);
- glColor3f (1,1,1);
- }
-
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glEnable (GL_BLEND);
- glDepthMask(1);
-}