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Diffstat (limited to 'src/renderergl2/tr_surface.c')
| -rw-r--r-- | src/renderergl2/tr_surface.c | 1698 |
1 files changed, 1698 insertions, 0 deletions
diff --git a/src/renderergl2/tr_surface.c b/src/renderergl2/tr_surface.c new file mode 100644 index 00000000..ad7f5a5f --- /dev/null +++ b/src/renderergl2/tr_surface.c @@ -0,0 +1,1698 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. + +This file is part of Quake III Arena source code. + +Quake III Arena source code is free software; you can redistribute it +and/or modify it under the terms of the GNU General Public License as +published by the Free Software Foundation; either version 2 of the License, +or (at your option) any later version. + +Quake III Arena source code is distributed in the hope that it will be +useful, but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with Quake III Arena source code; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +=========================================================================== +*/ +// tr_surf.c +#include "tr_local.h" +#if idppc_altivec && !defined(MACOS_X) +#include <altivec.h> +#endif + +/* + + THIS ENTIRE FILE IS BACK END + +backEnd.currentEntity will be valid. + +Tess_Begin has already been called for the surface's shader. + +The modelview matrix will be set. + +It is safe to actually issue drawing commands here if you don't want to +use the shader system. +*/ + + +//============================================================================ + + +/* +============== +RB_CheckOverflow +============== +*/ +void RB_CheckOverflow( int verts, int indexes ) { + if (tess.numVertexes + verts < SHADER_MAX_VERTEXES + && tess.numIndexes + indexes < SHADER_MAX_INDEXES) { + return; + } + + RB_EndSurface(); + + if ( verts >= SHADER_MAX_VERTEXES ) { + ri.Error(ERR_DROP, "RB_CheckOverflow: verts > MAX (%d > %d)", verts, SHADER_MAX_VERTEXES ); + } + if ( indexes >= SHADER_MAX_INDEXES ) { + ri.Error(ERR_DROP, "RB_CheckOverflow: indices > MAX (%d > %d)", indexes, SHADER_MAX_INDEXES ); + } + + RB_BeginSurface(tess.shader, tess.fogNum ); +} + +void RB_CheckVBOandIBO(VBO_t *vbo, IBO_t *ibo) +{ + if (!(vbo == glState.currentVBO && ibo == glState.currentIBO) || tess.multiDrawPrimitives >= MAX_MULTIDRAW_PRIMITIVES) + { + RB_EndSurface(); + RB_BeginSurface(tess.shader, tess.fogNum); + + R_BindVBO(vbo); + R_BindIBO(ibo); + } + + if (vbo != tess.vbo && ibo != tess.ibo) + tess.useInternalVBO = qfalse; +} + + +/* +============== +RB_AddQuadStampExt +============== +*/ +void RB_AddQuadStampExt( vec3_t origin, vec3_t left, vec3_t up, float color[4], float s1, float t1, float s2, float t2 ) { + vec3_t normal; + int ndx; + + RB_CHECKOVERFLOW( 4, 6 ); + + ndx = tess.numVertexes; + + // triangle indexes for a simple quad + tess.indexes[ tess.numIndexes ] = ndx; + tess.indexes[ tess.numIndexes + 1 ] = ndx + 1; + tess.indexes[ tess.numIndexes + 2 ] = ndx + 3; + + tess.indexes[ tess.numIndexes + 3 ] = ndx + 3; + tess.indexes[ tess.numIndexes + 4 ] = ndx + 1; + tess.indexes[ tess.numIndexes + 5 ] = ndx + 2; + + tess.xyz[ndx][0] = origin[0] + left[0] + up[0]; + tess.xyz[ndx][1] = origin[1] + left[1] + up[1]; + tess.xyz[ndx][2] = origin[2] + left[2] + up[2]; + + tess.xyz[ndx+1][0] = origin[0] - left[0] + up[0]; + tess.xyz[ndx+1][1] = origin[1] - left[1] + up[1]; + tess.xyz[ndx+1][2] = origin[2] - left[2] + up[2]; + + tess.xyz[ndx+2][0] = origin[0] - left[0] - up[0]; + tess.xyz[ndx+2][1] = origin[1] - left[1] - up[1]; + tess.xyz[ndx+2][2] = origin[2] - left[2] - up[2]; + + tess.xyz[ndx+3][0] = origin[0] + left[0] - up[0]; + tess.xyz[ndx+3][1] = origin[1] + left[1] - up[1]; + tess.xyz[ndx+3][2] = origin[2] + left[2] - up[2]; + + + // constant normal all the way around + VectorSubtract( vec3_origin, backEnd.viewParms.or.axis[0], normal ); + + tess.normal[ndx][0] = tess.normal[ndx+1][0] = tess.normal[ndx+2][0] = tess.normal[ndx+3][0] = normal[0]; + tess.normal[ndx][1] = tess.normal[ndx+1][1] = tess.normal[ndx+2][1] = tess.normal[ndx+3][1] = normal[1]; + tess.normal[ndx][2] = tess.normal[ndx+1][2] = tess.normal[ndx+2][2] = tess.normal[ndx+3][2] = normal[2]; + + // standard square texture coordinates + tess.texCoords[ndx][0][0] = tess.texCoords[ndx][1][0] = s1; + tess.texCoords[ndx][0][1] = tess.texCoords[ndx][1][1] = t1; + + tess.texCoords[ndx+1][0][0] = tess.texCoords[ndx+1][1][0] = s2; + tess.texCoords[ndx+1][0][1] = tess.texCoords[ndx+1][1][1] = t1; + + tess.texCoords[ndx+2][0][0] = tess.texCoords[ndx+2][1][0] = s2; + tess.texCoords[ndx+2][0][1] = tess.texCoords[ndx+2][1][1] = t2; + + tess.texCoords[ndx+3][0][0] = tess.texCoords[ndx+3][1][0] = s1; + tess.texCoords[ndx+3][0][1] = tess.texCoords[ndx+3][1][1] = t2; + + // constant color all the way around + // should this be identity and let the shader specify from entity? + tess.vertexColors[ndx][0] = color[0]; + tess.vertexColors[ndx][1] = color[1]; + tess.vertexColors[ndx][2] = color[2]; + tess.vertexColors[ndx][3] = color[3]; + + tess.vertexColors[ndx+1][0] = color[0]; + tess.vertexColors[ndx+1][1] = color[1]; + tess.vertexColors[ndx+1][2] = color[2]; + tess.vertexColors[ndx+1][3] = color[3]; + + tess.vertexColors[ndx+2][0] = color[0]; + tess.vertexColors[ndx+2][1] = color[1]; + tess.vertexColors[ndx+2][2] = color[2]; + tess.vertexColors[ndx+2][3] = color[3]; + + tess.vertexColors[ndx+3][0] = color[0]; + tess.vertexColors[ndx+3][1] = color[1]; + tess.vertexColors[ndx+3][2] = color[2]; + tess.vertexColors[ndx+3][3] = color[3]; + + tess.numVertexes += 4; + tess.numIndexes += 6; +} + +/* +============== +RB_AddQuadStamp +============== +*/ +void RB_AddQuadStamp( vec3_t origin, vec3_t left, vec3_t up, float color[4] ) { + RB_AddQuadStampExt( origin, left, up, color, 0, 0, 1, 1 ); +} + + +/* +============== +RB_InstantQuad + +based on Tess_InstantQuad from xreal +============== +*/ +void RB_InstantQuad2(vec4_t quadVerts[4], vec2_t texCoords[4]) +{ + GLimp_LogComment("--- RB_InstantQuad2 ---\n"); + + tess.numVertexes = 0; + tess.numIndexes = 0; + tess.firstIndex = 0; + + VectorCopy4(quadVerts[0], tess.xyz[tess.numVertexes]); + VectorCopy2(texCoords[0], tess.texCoords[tess.numVertexes][0]); + tess.numVertexes++; + + VectorCopy4(quadVerts[1], tess.xyz[tess.numVertexes]); + VectorCopy2(texCoords[1], tess.texCoords[tess.numVertexes][0]); + tess.numVertexes++; + + VectorCopy4(quadVerts[2], tess.xyz[tess.numVertexes]); + VectorCopy2(texCoords[2], tess.texCoords[tess.numVertexes][0]); + tess.numVertexes++; + + VectorCopy4(quadVerts[3], tess.xyz[tess.numVertexes]); + VectorCopy2(texCoords[3], tess.texCoords[tess.numVertexes][0]); + tess.numVertexes++; + + tess.indexes[tess.numIndexes++] = 0; + tess.indexes[tess.numIndexes++] = 1; + tess.indexes[tess.numIndexes++] = 2; + tess.indexes[tess.numIndexes++] = 0; + tess.indexes[tess.numIndexes++] = 2; + tess.indexes[tess.numIndexes++] = 3; + tess.minIndex = 0; + tess.maxIndex = 3; + + RB_UpdateVBOs(ATTR_POSITION | ATTR_TEXCOORD); + + GLSL_VertexAttribsState(ATTR_POSITION | ATTR_TEXCOORD); + + R_DrawElementsVBO(tess.numIndexes, tess.firstIndex, tess.minIndex, tess.maxIndex); + + tess.numIndexes = 0; + tess.numVertexes = 0; + tess.firstIndex = 0; + tess.minIndex = 0; + tess.maxIndex = 0; +} + + +void RB_InstantQuad(vec4_t quadVerts[4]) +{ + vec4_t color; + vec2_t texCoords[4]; + vec2_t invTexRes; + + VectorSet4(color, 1, 1, 1, 1); + + texCoords[0][0] = 0; + texCoords[0][1] = 0; + + texCoords[1][0] = 1; + texCoords[1][1] = 0; + + texCoords[2][0] = 1; + texCoords[2][1] = 1; + + texCoords[3][0] = 0; + texCoords[3][1] = 1; + + invTexRes[0] = 1.0f / 256.0f; + invTexRes[1] = 1.0f / 256.0f; + + GLSL_BindProgram(&tr.textureColorShader); + + GLSL_SetUniformMatrix16(&tr.textureColorShader, TEXTURECOLOR_UNIFORM_MODELVIEWPROJECTIONMATRIX, glState.modelviewProjection); + GLSL_SetUniformVec4(&tr.textureColorShader, TEXTURECOLOR_UNIFORM_COLOR, color); + GLSL_SetUniformVec2(&tr.textureColorShader, TEXTURECOLOR_UNIFORM_INVTEXRES, invTexRes); + GLSL_SetUniformVec2(&tr.textureColorShader, TEXTURECOLOR_UNIFORM_AUTOEXPOSUREMINMAX, tr.refdef.autoExposureMinMax); + GLSL_SetUniformVec3(&tr.textureColorShader, TEXTURECOLOR_UNIFORM_TONEMINAVGMAXLINEAR, tr.refdef.toneMinAvgMaxLinear); + + RB_InstantQuad2(quadVerts, texCoords); //, color, &tr.textureColorShader, invTexRes); +} + + +/* +============== +RB_SurfaceSprite +============== +*/ +static void RB_SurfaceSprite( void ) { + vec3_t left, up; + float radius; + float colors[4]; + trRefEntity_t *ent = backEnd.currentEntity; + + // calculate the xyz locations for the four corners + radius = ent->e.radius; + if ( ent->e.rotation == 0 ) { + VectorScale( backEnd.viewParms.or.axis[1], radius, left ); + VectorScale( backEnd.viewParms.or.axis[2], radius, up ); + } else { + float s, c; + float ang; + + ang = M_PI * ent->e.rotation / 180; + s = sin( ang ); + c = cos( ang ); + + VectorScale( backEnd.viewParms.or.axis[1], c * radius, left ); + VectorMA( left, -s * radius, backEnd.viewParms.or.axis[2], left ); + + VectorScale( backEnd.viewParms.or.axis[2], c * radius, up ); + VectorMA( up, s * radius, backEnd.viewParms.or.axis[1], up ); + } + if ( backEnd.viewParms.isMirror ) { + VectorSubtract( vec3_origin, left, left ); + } + + VectorScale4(ent->e.shaderRGBA, 1.0f / 255.0f, colors); + + RB_AddQuadStamp( ent->e.origin, left, up, colors ); +} + + +/* +============= +RB_SurfacePolychain +============= +*/ +static void RB_SurfacePolychain( srfPoly_t *p ) { + int i; + int numv; + + RB_CHECKOVERFLOW( p->numVerts, 3*(p->numVerts - 2) ); + + // fan triangles into the tess array + numv = tess.numVertexes; + for ( i = 0; i < p->numVerts; i++ ) { + VectorCopy( p->verts[i].xyz, tess.xyz[numv] ); + tess.texCoords[numv][0][0] = p->verts[i].st[0]; + tess.texCoords[numv][0][1] = p->verts[i].st[1]; + tess.vertexColors[numv][0] = p->verts[ i ].modulate[0] / 255.0f; + tess.vertexColors[numv][1] = p->verts[ i ].modulate[1] / 255.0f; + tess.vertexColors[numv][2] = p->verts[ i ].modulate[2] / 255.0f; + tess.vertexColors[numv][3] = p->verts[ i ].modulate[3] / 255.0f; + + numv++; + } + + // generate fan indexes into the tess array + for ( i = 0; i < p->numVerts-2; i++ ) { + tess.indexes[tess.numIndexes + 0] = tess.numVertexes; + tess.indexes[tess.numIndexes + 1] = tess.numVertexes + i + 1; + tess.indexes[tess.numIndexes + 2] = tess.numVertexes + i + 2; + tess.numIndexes += 3; + } + + tess.numVertexes = numv; +} + +static void RB_SurfaceHelper( int numVerts, srfVert_t *verts, int numTriangles, srfTriangle_t *triangles, int dlightBits, int pshadowBits) +{ + int i; + srfTriangle_t *tri; + srfVert_t *dv; + float *xyz, *normal, *texCoords, *lightCoords, *lightdir; +#ifdef USE_VERT_TANGENT_SPACE + float *tangent, *bitangent; +#endif + glIndex_t *index; + float *color; + + RB_CheckVBOandIBO(tess.vbo, tess.ibo); + + RB_CHECKOVERFLOW( numVerts, numTriangles * 3 ); + + tri = triangles; + index = &tess.indexes[ tess.numIndexes ]; + for ( i = 0 ; i < numTriangles ; i++, tri++ ) { + *index++ = tess.numVertexes + tri->indexes[0]; + *index++ = tess.numVertexes + tri->indexes[1]; + *index++ = tess.numVertexes + tri->indexes[2]; + } + tess.numIndexes += numTriangles * 3; + + if ( tess.shader->vertexAttribs & ATTR_POSITION ) + { + dv = verts; + xyz = tess.xyz[ tess.numVertexes ]; + for ( i = 0 ; i < numVerts ; i++, dv++, xyz+=4 ) + VectorCopy(dv->xyz, xyz); + } + + if ( tess.shader->vertexAttribs & ATTR_NORMAL ) + { + dv = verts; + normal = tess.normal[ tess.numVertexes ]; + for ( i = 0 ; i < numVerts ; i++, dv++, normal+=4 ) + VectorCopy(dv->normal, normal); + } + +#ifdef USE_VERT_TANGENT_SPACE + if ( tess.shader->vertexAttribs & ATTR_TANGENT ) + { + dv = verts; + tangent = tess.tangent[ tess.numVertexes ]; + for ( i = 0 ; i < numVerts ; i++, dv++, tangent+=4 ) + VectorCopy(dv->tangent, tangent); + } + + if ( tess.shader->vertexAttribs & ATTR_BITANGENT ) + { + dv = verts; + bitangent = tess.bitangent[ tess.numVertexes ]; + for ( i = 0 ; i < numVerts ; i++, dv++, bitangent+=4 ) + VectorCopy(dv->bitangent, bitangent); + } +#endif + + if ( tess.shader->vertexAttribs & ATTR_TEXCOORD ) + { + dv = verts; + texCoords = tess.texCoords[ tess.numVertexes ][0]; + for ( i = 0 ; i < numVerts ; i++, dv++, texCoords+=4 ) + VectorCopy2(dv->st, texCoords); + } + + if ( tess.shader->vertexAttribs & ATTR_LIGHTCOORD ) + { + dv = verts; + lightCoords = tess.texCoords[ tess.numVertexes ][1]; + for ( i = 0 ; i < numVerts ; i++, dv++, lightCoords+=4 ) + VectorCopy2(dv->lightmap, lightCoords); + } + + if ( tess.shader->vertexAttribs & ATTR_COLOR ) + { + dv = verts; + color = tess.vertexColors[ tess.numVertexes ]; + for ( i = 0 ; i < numVerts ; i++, dv++, color+=4 ) + VectorCopy4(dv->vertexColors, color); + } + + if ( tess.shader->vertexAttribs & ATTR_LIGHTDIRECTION ) + { + dv = verts; + lightdir = tess.lightdir[ tess.numVertexes ]; + for ( i = 0 ; i < numVerts ; i++, dv++, lightdir+=4 ) + VectorCopy(dv->lightdir, lightdir); + } + +#if 0 // nothing even uses vertex dlightbits + for ( i = 0 ; i < numVerts ; i++ ) { + tess.vertexDlightBits[ tess.numVertexes + i ] = dlightBits; + } +#endif + + tess.dlightBits |= dlightBits; + tess.pshadowBits |= pshadowBits; + + tess.numVertexes += numVerts; +} + +static qboolean RB_SurfaceHelperVBO(VBO_t *vbo, IBO_t *ibo, int numVerts, int numIndexes, int firstIndex, int minIndex, int maxIndex, int dlightBits, int pshadowBits, qboolean shaderCheck) +{ + int i, mergeForward, mergeBack; + GLvoid *firstIndexOffset, *lastIndexOffset; + + if (!vbo || !ibo) + { + return qfalse; + } + + if (shaderCheck && !(!ShaderRequiresCPUDeforms(tess.shader) && !tess.shader->isSky && !tess.shader->isPortal)) + { + return qfalse; + } + + RB_CheckVBOandIBO(vbo, ibo); + + tess.dlightBits |= dlightBits; + tess.pshadowBits |= pshadowBits; + + // merge this into any existing multidraw primitives + mergeForward = -1; + mergeBack = -1; + firstIndexOffset = BUFFER_OFFSET(firstIndex * sizeof(GL_INDEX_TYPE)); + lastIndexOffset = BUFFER_OFFSET((firstIndex + numIndexes) * sizeof(GL_INDEX_TYPE)); + + if (r_mergeMultidraws->integer) + { + i = 0; + + if (r_mergeMultidraws->integer == 1) + { + // lazy merge, only check the last primitive + if (tess.multiDrawPrimitives) + { + i = tess.multiDrawPrimitives - 1; + } + } + + for (; i < tess.multiDrawPrimitives; i++) + { + if (tess.multiDrawLastIndex[i] == firstIndexOffset) + { + mergeBack = i; + } + + if (lastIndexOffset == tess.multiDrawFirstIndex[i]) + { + mergeForward = i; + } + } + } + + if (mergeBack != -1 && mergeForward == -1) + { + tess.multiDrawNumIndexes[mergeBack] += numIndexes; + tess.multiDrawLastIndex[mergeBack] = tess.multiDrawFirstIndex[mergeBack] + tess.multiDrawNumIndexes[mergeBack]; + tess.multiDrawMinIndex[mergeBack] = MIN(tess.multiDrawMinIndex[mergeBack], minIndex); + tess.multiDrawMaxIndex[mergeBack] = MAX(tess.multiDrawMaxIndex[mergeBack], maxIndex); + backEnd.pc.c_multidrawsMerged++; + } + else if (mergeBack == -1 && mergeForward != -1) + { + tess.multiDrawNumIndexes[mergeForward] += numIndexes; + tess.multiDrawFirstIndex[mergeForward] = firstIndexOffset; + tess.multiDrawLastIndex[mergeForward] = tess.multiDrawFirstIndex[mergeForward] + tess.multiDrawNumIndexes[mergeForward]; + tess.multiDrawMinIndex[mergeForward] = MIN(tess.multiDrawMinIndex[mergeForward], minIndex); + tess.multiDrawMaxIndex[mergeForward] = MAX(tess.multiDrawMaxIndex[mergeForward], maxIndex); + backEnd.pc.c_multidrawsMerged++; + } + else if (mergeBack != -1 && mergeForward != -1) + { + tess.multiDrawNumIndexes[mergeBack] += numIndexes + tess.multiDrawNumIndexes[mergeForward]; + tess.multiDrawLastIndex[mergeBack] = tess.multiDrawFirstIndex[mergeBack] + tess.multiDrawNumIndexes[mergeBack]; + tess.multiDrawMinIndex[mergeBack] = MIN(tess.multiDrawMinIndex[mergeBack], MIN(tess.multiDrawMinIndex[mergeForward], minIndex)); + tess.multiDrawMaxIndex[mergeBack] = MAX(tess.multiDrawMaxIndex[mergeBack], MAX(tess.multiDrawMaxIndex[mergeForward], maxIndex)); + tess.multiDrawPrimitives--; + + if (mergeForward != tess.multiDrawPrimitives) + { + tess.multiDrawNumIndexes[mergeForward] = tess.multiDrawNumIndexes[tess.multiDrawPrimitives]; + tess.multiDrawFirstIndex[mergeForward] = tess.multiDrawFirstIndex[tess.multiDrawPrimitives]; + } + backEnd.pc.c_multidrawsMerged += 2; + } + else if (mergeBack == -1 && mergeForward == -1) + { + tess.multiDrawNumIndexes[tess.multiDrawPrimitives] = numIndexes; + tess.multiDrawFirstIndex[tess.multiDrawPrimitives] = firstIndexOffset; + tess.multiDrawLastIndex[tess.multiDrawPrimitives] = lastIndexOffset; + tess.multiDrawMinIndex[tess.multiDrawPrimitives] = minIndex; + tess.multiDrawMaxIndex[tess.multiDrawPrimitives] = maxIndex; + tess.multiDrawPrimitives++; + } + + backEnd.pc.c_multidraws++; + + tess.numIndexes += numIndexes; + tess.numVertexes += numVerts; + + return qtrue; +} + +/* +============= +RB_SurfaceTriangles +============= +*/ +static void RB_SurfaceTriangles( srfTriangles_t *srf ) { + if( RB_SurfaceHelperVBO (srf->vbo, srf->ibo, srf->numVerts, srf->numTriangles * 3, + srf->firstIndex, srf->minIndex, srf->maxIndex, srf->dlightBits, srf->pshadowBits, qtrue ) ) + { + return; + } + + RB_SurfaceHelper(srf->numVerts, srf->verts, srf->numTriangles, + srf->triangles, srf->dlightBits, srf->pshadowBits); +} + + + +/* +============== +RB_SurfaceBeam +============== +*/ +static void RB_SurfaceBeam( void ) +{ +#define NUM_BEAM_SEGS 6 + refEntity_t *e; + int i; + vec3_t perpvec; + vec3_t direction, normalized_direction; + vec3_t start_points[NUM_BEAM_SEGS], end_points[NUM_BEAM_SEGS]; + vec3_t oldorigin, origin; + + e = &backEnd.currentEntity->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 ( VectorNormalize( normalized_direction ) == 0 ) + return; + + PerpendicularVector( perpvec, normalized_direction ); + + VectorScale( perpvec, 4, perpvec ); + + for ( i = 0; i < NUM_BEAM_SEGS ; i++ ) + { + RotatePointAroundVector( start_points[i], normalized_direction, perpvec, (360.0/NUM_BEAM_SEGS)*i ); +// VectorAdd( start_points[i], origin, start_points[i] ); + VectorAdd( start_points[i], direction, end_points[i] ); + } + + GL_Bind( tr.whiteImage ); + + GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE ); + + // FIXME: Quake3 doesn't use this, so I never tested it + tess.numVertexes = 0; + tess.numIndexes = 0; + tess.firstIndex = 0; + tess.minIndex = 0; + tess.maxIndex = 0; + + for ( i = 0; i <= NUM_BEAM_SEGS; i++ ) { + VectorCopy(start_points[ i % NUM_BEAM_SEGS ], tess.xyz[tess.numVertexes++]); + VectorCopy(end_points [ i % NUM_BEAM_SEGS ], tess.xyz[tess.numVertexes++]); + } + + for ( i = 0; i < NUM_BEAM_SEGS; i++ ) { + tess.indexes[tess.numIndexes++] = i * 2; + tess.indexes[tess.numIndexes++] = (i + 1) * 2; + tess.indexes[tess.numIndexes++] = 1 + i * 2; + + tess.indexes[tess.numIndexes++] = 1 + i * 2; + tess.indexes[tess.numIndexes++] = (i + 1) * 2; + tess.indexes[tess.numIndexes++] = 1 + (i + 1) * 2; + } + + tess.minIndex = 0; + tess.maxIndex = tess.numVertexes; + + // FIXME: A lot of this can probably be removed for speed, and refactored into a more convenient function + RB_UpdateVBOs(ATTR_POSITION); + + { + shaderProgram_t *sp = &tr.textureColorShader; + vec4_t color; + + GLSL_VertexAttribsState(ATTR_POSITION); + GLSL_BindProgram(sp); + + GLSL_SetUniformMatrix16(sp, TEXTURECOLOR_UNIFORM_MODELVIEWPROJECTIONMATRIX, glState.modelviewProjection); + + color[0] = 1.0f; + color[1] = 0.0f; + color[2] = 0.0f; + color[3] = 1.0f; + GLSL_SetUniformVec4(sp, TEXTURECOLOR_UNIFORM_COLOR, color); + } + + R_DrawElementsVBO(tess.numIndexes, tess.firstIndex, tess.minIndex, tess.maxIndex); + + tess.numIndexes = 0; + tess.numVertexes = 0; + tess.firstIndex = 0; + tess.minIndex = 0; + tess.maxIndex = 0; +} + +//================================================================================ + +static void DoRailCore( const vec3_t start, const vec3_t end, const vec3_t up, float len, float spanWidth ) +{ + float spanWidth2; + int vbase; + float t = len / 256.0f; + + vbase = tess.numVertexes; + + spanWidth2 = -spanWidth; + + // FIXME: use quad stamp? + VectorMA( start, spanWidth, up, tess.xyz[tess.numVertexes] ); + tess.texCoords[tess.numVertexes][0][0] = 0; + tess.texCoords[tess.numVertexes][0][1] = 0; + tess.vertexColors[tess.numVertexes][0] = backEnd.currentEntity->e.shaderRGBA[0] * 0.25 / 255.0f; + tess.vertexColors[tess.numVertexes][1] = backEnd.currentEntity->e.shaderRGBA[1] * 0.25 / 255.0f; + tess.vertexColors[tess.numVertexes][2] = backEnd.currentEntity->e.shaderRGBA[2] * 0.25 / 255.0f; + tess.numVertexes++; + + VectorMA( start, spanWidth2, up, tess.xyz[tess.numVertexes] ); + tess.texCoords[tess.numVertexes][0][0] = 0; + tess.texCoords[tess.numVertexes][0][1] = 1; + tess.vertexColors[tess.numVertexes][0] = backEnd.currentEntity->e.shaderRGBA[0] / 255.0f; + tess.vertexColors[tess.numVertexes][1] = backEnd.currentEntity->e.shaderRGBA[1] / 255.0f; + tess.vertexColors[tess.numVertexes][2] = backEnd.currentEntity->e.shaderRGBA[2] / 255.0f; + tess.numVertexes++; + + VectorMA( end, spanWidth, up, tess.xyz[tess.numVertexes] ); + + tess.texCoords[tess.numVertexes][0][0] = t; + tess.texCoords[tess.numVertexes][0][1] = 0; + tess.vertexColors[tess.numVertexes][0] = backEnd.currentEntity->e.shaderRGBA[0] / 255.0f; + tess.vertexColors[tess.numVertexes][1] = backEnd.currentEntity->e.shaderRGBA[1] / 255.0f; + tess.vertexColors[tess.numVertexes][2] = backEnd.currentEntity->e.shaderRGBA[2] / 255.0f; + tess.numVertexes++; + + VectorMA( end, spanWidth2, up, tess.xyz[tess.numVertexes] ); + tess.texCoords[tess.numVertexes][0][0] = t; + tess.texCoords[tess.numVertexes][0][1] = 1; + tess.vertexColors[tess.numVertexes][0] = backEnd.currentEntity->e.shaderRGBA[0] / 255.0f; + tess.vertexColors[tess.numVertexes][1] = backEnd.currentEntity->e.shaderRGBA[1] / 255.0f; + tess.vertexColors[tess.numVertexes][2] = backEnd.currentEntity->e.shaderRGBA[2] / 255.0f; + tess.numVertexes++; + + tess.indexes[tess.numIndexes++] = vbase; + tess.indexes[tess.numIndexes++] = vbase + 1; + tess.indexes[tess.numIndexes++] = vbase + 2; + + tess.indexes[tess.numIndexes++] = vbase + 2; + tess.indexes[tess.numIndexes++] = vbase + 1; + tess.indexes[tess.numIndexes++] = vbase + 3; +} + +static void DoRailDiscs( int numSegs, const vec3_t start, const vec3_t dir, const vec3_t right, const vec3_t up ) +{ + int i; + vec3_t pos[4]; + vec3_t v; + int spanWidth = r_railWidth->integer; + float c, s; + float scale; + + if ( numSegs > 1 ) + numSegs--; + if ( !numSegs ) + return; + + scale = 0.25; + + for ( i = 0; i < 4; i++ ) + { + c = cos( DEG2RAD( 45 + i * 90 ) ); + s = sin( DEG2RAD( 45 + i * 90 ) ); + v[0] = ( right[0] * c + up[0] * s ) * scale * spanWidth; + v[1] = ( right[1] * c + up[1] * s ) * scale * spanWidth; + v[2] = ( right[2] * c + up[2] * s ) * scale * spanWidth; + VectorAdd( start, v, pos[i] ); + + if ( numSegs > 1 ) + { + // offset by 1 segment if we're doing a long distance shot + VectorAdd( pos[i], dir, pos[i] ); + } + } + + for ( i = 0; i < numSegs; i++ ) + { + int j; + + RB_CHECKOVERFLOW( 4, 6 ); + + for ( j = 0; j < 4; j++ ) + { + VectorCopy( pos[j], tess.xyz[tess.numVertexes] ); + tess.texCoords[tess.numVertexes][0][0] = ( j < 2 ); + tess.texCoords[tess.numVertexes][0][1] = ( j && j != 3 ); + tess.vertexColors[tess.numVertexes][0] = backEnd.currentEntity->e.shaderRGBA[0] / 255.0f; + tess.vertexColors[tess.numVertexes][1] = backEnd.currentEntity->e.shaderRGBA[1] / 255.0f; + tess.vertexColors[tess.numVertexes][2] = backEnd.currentEntity->e.shaderRGBA[2] / 255.0f; + tess.numVertexes++; + + VectorAdd( pos[j], dir, pos[j] ); + } + + tess.indexes[tess.numIndexes++] = tess.numVertexes - 4 + 0; + tess.indexes[tess.numIndexes++] = tess.numVertexes - 4 + 1; + tess.indexes[tess.numIndexes++] = tess.numVertexes - 4 + 3; + tess.indexes[tess.numIndexes++] = tess.numVertexes - 4 + 3; + tess.indexes[tess.numIndexes++] = tess.numVertexes - 4 + 1; + tess.indexes[tess.numIndexes++] = tess.numVertexes - 4 + 2; + } +} + +/* +** RB_SurfaceRailRinges +*/ +static void RB_SurfaceRailRings( void ) { + refEntity_t *e; + int numSegs; + int len; + vec3_t vec; + vec3_t right, up; + vec3_t start, end; + + e = &backEnd.currentEntity->e; + + VectorCopy( e->oldorigin, start ); + VectorCopy( e->origin, end ); + + // compute variables + VectorSubtract( end, start, vec ); + len = VectorNormalize( vec ); + MakeNormalVectors( vec, right, up ); + numSegs = ( len ) / r_railSegmentLength->value; + if ( numSegs <= 0 ) { + numSegs = 1; + } + + VectorScale( vec, r_railSegmentLength->value, vec ); + + DoRailDiscs( numSegs, start, vec, right, up ); +} + +/* +** RB_SurfaceRailCore +*/ +static void RB_SurfaceRailCore( void ) { + refEntity_t *e; + int len; + vec3_t right; + vec3_t vec; + vec3_t start, end; + vec3_t v1, v2; + + e = &backEnd.currentEntity->e; + + VectorCopy( e->oldorigin, start ); + VectorCopy( e->origin, end ); + + VectorSubtract( end, start, vec ); + len = VectorNormalize( vec ); + + // compute side vector + VectorSubtract( start, backEnd.viewParms.or.origin, v1 ); + VectorNormalize( v1 ); + VectorSubtract( end, backEnd.viewParms.or.origin, v2 ); + VectorNormalize( v2 ); + CrossProduct( v1, v2, right ); + VectorNormalize( right ); + + DoRailCore( start, end, right, len, r_railCoreWidth->integer ); +} + +/* +** RB_SurfaceLightningBolt +*/ +static void RB_SurfaceLightningBolt( void ) { + refEntity_t *e; + int len; + vec3_t right; + vec3_t vec; + vec3_t start, end; + vec3_t v1, v2; + int i; + + e = &backEnd.currentEntity->e; + + VectorCopy( e->oldorigin, end ); + VectorCopy( e->origin, start ); + + // compute variables + VectorSubtract( end, start, vec ); + len = VectorNormalize( vec ); + + // compute side vector + VectorSubtract( start, backEnd.viewParms.or.origin, v1 ); + VectorNormalize( v1 ); + VectorSubtract( end, backEnd.viewParms.or.origin, v2 ); + VectorNormalize( v2 ); + CrossProduct( v1, v2, right ); + VectorNormalize( right ); + + for ( i = 0 ; i < 4 ; i++ ) { + vec3_t temp; + + DoRailCore( start, end, right, len, 8 ); + RotatePointAroundVector( temp, vec, right, 45 ); + VectorCopy( temp, right ); + } +} + +/* +** VectorArrayNormalize +* +* The inputs to this routing seem to always be close to length = 1.0 (about 0.6 to 2.0) +* This means that we don't have to worry about zero length or enormously long vectors. +*/ +static void VectorArrayNormalize(vec4_t *normals, unsigned int count) +{ +// assert(count); + +#if idppc + { + register float half = 0.5; + register float one = 1.0; + float *components = (float *)normals; + + // Vanilla PPC code, but since PPC has a reciprocal square root estimate instruction, + // runs *much* faster than calling sqrt(). We'll use a single Newton-Raphson + // refinement step to get a little more precision. This seems to yeild results + // that are correct to 3 decimal places and usually correct to at least 4 (sometimes 5). + // (That is, for the given input range of about 0.6 to 2.0). + do { + float x, y, z; + float B, y0, y1; + + x = components[0]; + y = components[1]; + z = components[2]; + components += 4; + B = x*x + y*y + z*z; + +#ifdef __GNUC__ + asm("frsqrte %0,%1" : "=f" (y0) : "f" (B)); +#else + y0 = __frsqrte(B); +#endif + y1 = y0 + half*y0*(one - B*y0*y0); + + x = x * y1; + y = y * y1; + components[-4] = x; + z = z * y1; + components[-3] = y; + components[-2] = z; + } while(count--); + } +#else // No assembly version for this architecture, or C_ONLY defined + // given the input, it's safe to call VectorNormalizeFast + while (count--) { + VectorNormalizeFast(normals[0]); + normals++; + } +#endif + +} + + + +/* +** LerpMeshVertexes +*/ +#if idppc_altivec +static void LerpMeshVertexes_altivec(md3Surface_t *surf, float backlerp) +{ + short *oldXyz, *newXyz, *oldNormals, *newNormals; + float *outXyz, *outNormal; + float oldXyzScale QALIGN(16); + float newXyzScale QALIGN(16); + float oldNormalScale QALIGN(16); + float newNormalScale QALIGN(16); + int vertNum; + unsigned lat, lng; + int numVerts; + + outXyz = tess.xyz[tess.numVertexes]; + outNormal = tess.normal[tess.numVertexes]; + + newXyz = (short *)((byte *)surf + surf->ofsXyzNormals) + + (backEnd.currentEntity->e.frame * surf->numVerts * 4); + newNormals = newXyz + 3; + + newXyzScale = MD3_XYZ_SCALE * (1.0 - backlerp); + newNormalScale = 1.0 - backlerp; + + numVerts = surf->numVerts; + + if ( backlerp == 0 ) { + vector signed short newNormalsVec0; + vector signed short newNormalsVec1; + vector signed int newNormalsIntVec; + vector float newNormalsFloatVec; + vector float newXyzScaleVec; + vector unsigned char newNormalsLoadPermute; + vector unsigned char newNormalsStorePermute; + vector float zero; + + newNormalsStorePermute = vec_lvsl(0,(float *)&newXyzScaleVec); + newXyzScaleVec = *(vector float *)&newXyzScale; + newXyzScaleVec = vec_perm(newXyzScaleVec,newXyzScaleVec,newNormalsStorePermute); + newXyzScaleVec = vec_splat(newXyzScaleVec,0); + newNormalsLoadPermute = vec_lvsl(0,newXyz); + newNormalsStorePermute = vec_lvsr(0,outXyz); + zero = (vector float)vec_splat_s8(0); + // + // just copy the vertexes + // + for (vertNum=0 ; vertNum < numVerts ; vertNum++, + newXyz += 4, newNormals += 4, + outXyz += 4, outNormal += 4) + { + newNormalsLoadPermute = vec_lvsl(0,newXyz); + newNormalsStorePermute = vec_lvsr(0,outXyz); + newNormalsVec0 = vec_ld(0,newXyz); + newNormalsVec1 = vec_ld(16,newXyz); + newNormalsVec0 = vec_perm(newNormalsVec0,newNormalsVec1,newNormalsLoadPermute); + newNormalsIntVec = vec_unpackh(newNormalsVec0); + newNormalsFloatVec = vec_ctf(newNormalsIntVec,0); + newNormalsFloatVec = vec_madd(newNormalsFloatVec,newXyzScaleVec,zero); + newNormalsFloatVec = vec_perm(newNormalsFloatVec,newNormalsFloatVec,newNormalsStorePermute); + //outXyz[0] = newXyz[0] * newXyzScale; + //outXyz[1] = newXyz[1] * newXyzScale; + //outXyz[2] = newXyz[2] * newXyzScale; + + lat = ( newNormals[0] >> 8 ) & 0xff; + lng = ( newNormals[0] & 0xff ); + lat *= (FUNCTABLE_SIZE/256); + lng *= (FUNCTABLE_SIZE/256); + + // decode X as cos( lat ) * sin( long ) + // decode Y as sin( lat ) * sin( long ) + // decode Z as cos( long ) + + outNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng]; + outNormal[1] = tr.sinTable[lat] * tr.sinTable[lng]; + outNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK]; + + vec_ste(newNormalsFloatVec,0,outXyz); + vec_ste(newNormalsFloatVec,4,outXyz); + vec_ste(newNormalsFloatVec,8,outXyz); + } + } else { + // + // interpolate and copy the vertex and normal + // + oldXyz = (short *)((byte *)surf + surf->ofsXyzNormals) + + (backEnd.currentEntity->e.oldframe * surf->numVerts * 4); + oldNormals = oldXyz + 3; + + oldXyzScale = MD3_XYZ_SCALE * backlerp; + oldNormalScale = backlerp; + + for (vertNum=0 ; vertNum < numVerts ; vertNum++, + oldXyz += 4, newXyz += 4, oldNormals += 4, newNormals += 4, + outXyz += 4, outNormal += 4) + { + vec3_t uncompressedOldNormal, uncompressedNewNormal; + + // interpolate the xyz + outXyz[0] = oldXyz[0] * oldXyzScale + newXyz[0] * newXyzScale; + outXyz[1] = oldXyz[1] * oldXyzScale + newXyz[1] * newXyzScale; + outXyz[2] = oldXyz[2] * oldXyzScale + newXyz[2] * newXyzScale; + + // FIXME: interpolate lat/long instead? + lat = ( newNormals[0] >> 8 ) & 0xff; + lng = ( newNormals[0] & 0xff ); + lat *= 4; + lng *= 4; + uncompressedNewNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng]; + uncompressedNewNormal[1] = tr.sinTable[lat] * tr.sinTable[lng]; + uncompressedNewNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK]; + + lat = ( oldNormals[0] >> 8 ) & 0xff; + lng = ( oldNormals[0] & 0xff ); + lat *= 4; + lng *= 4; + + uncompressedOldNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng]; + uncompressedOldNormal[1] = tr.sinTable[lat] * tr.sinTable[lng]; + uncompressedOldNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK]; + + outNormal[0] = uncompressedOldNormal[0] * oldNormalScale + uncompressedNewNormal[0] * newNormalScale; + outNormal[1] = uncompressedOldNormal[1] * oldNormalScale + uncompressedNewNormal[1] * newNormalScale; + outNormal[2] = uncompressedOldNormal[2] * oldNormalScale + uncompressedNewNormal[2] * newNormalScale; + +// VectorNormalize (outNormal); + } + VectorArrayNormalize((vec4_t *)tess.normal[tess.numVertexes], numVerts); + } +} +#endif + +static void LerpMeshVertexes_scalar(mdvSurface_t *surf, float backlerp) +{ +#if 0 + short *oldXyz, *newXyz, *oldNormals, *newNormals; + float *outXyz, *outNormal; + float oldXyzScale, newXyzScale; + float oldNormalScale, newNormalScale; + int vertNum; + unsigned lat, lng; + int numVerts; + + outXyz = tess.xyz[tess.numVertexes]; + outNormal = tess.normal[tess.numVertexes]; + + newXyz = (short *)((byte *)surf + surf->ofsXyzNormals) + + (backEnd.currentEntity->e.frame * surf->numVerts * 4); + newNormals = newXyz + 3; + + newXyzScale = MD3_XYZ_SCALE * (1.0 - backlerp); + newNormalScale = 1.0 - backlerp; + + numVerts = surf->numVerts; + + if ( backlerp == 0 ) { + // + // just copy the vertexes + // + for (vertNum=0 ; vertNum < numVerts ; vertNum++, + newXyz += 4, newNormals += 4, + outXyz += 4, outNormal += 4) + { + + outXyz[0] = newXyz[0] * newXyzScale; + outXyz[1] = newXyz[1] * newXyzScale; + outXyz[2] = newXyz[2] * newXyzScale; + + lat = ( newNormals[0] >> 8 ) & 0xff; + lng = ( newNormals[0] & 0xff ); + lat *= (FUNCTABLE_SIZE/256); + lng *= (FUNCTABLE_SIZE/256); + + // decode X as cos( lat ) * sin( long ) + // decode Y as sin( lat ) * sin( long ) + // decode Z as cos( long ) + + outNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng]; + outNormal[1] = tr.sinTable[lat] * tr.sinTable[lng]; + outNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK]; + } + } else { + // + // interpolate and copy the vertex and normal + // + oldXyz = (short *)((byte *)surf + surf->ofsXyzNormals) + + (backEnd.currentEntity->e.oldframe * surf->numVerts * 4); + oldNormals = oldXyz + 3; + + oldXyzScale = MD3_XYZ_SCALE * backlerp; + oldNormalScale = backlerp; + + for (vertNum=0 ; vertNum < numVerts ; vertNum++, + oldXyz += 4, newXyz += 4, oldNormals += 4, newNormals += 4, + outXyz += 4, outNormal += 4) + { + vec3_t uncompressedOldNormal, uncompressedNewNormal; + + // interpolate the xyz + outXyz[0] = oldXyz[0] * oldXyzScale + newXyz[0] * newXyzScale; + outXyz[1] = oldXyz[1] * oldXyzScale + newXyz[1] * newXyzScale; + outXyz[2] = oldXyz[2] * oldXyzScale + newXyz[2] * newXyzScale; + + // FIXME: interpolate lat/long instead? + lat = ( newNormals[0] >> 8 ) & 0xff; + lng = ( newNormals[0] & 0xff ); + lat *= 4; + lng *= 4; + uncompressedNewNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng]; + uncompressedNewNormal[1] = tr.sinTable[lat] * tr.sinTable[lng]; + uncompressedNewNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK]; + + lat = ( oldNormals[0] >> 8 ) & 0xff; + lng = ( oldNormals[0] & 0xff ); + lat *= 4; + lng *= 4; + + uncompressedOldNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng]; + uncompressedOldNormal[1] = tr.sinTable[lat] * tr.sinTable[lng]; + uncompressedOldNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK]; + + outNormal[0] = uncompressedOldNormal[0] * oldNormalScale + uncompressedNewNormal[0] * newNormalScale; + outNormal[1] = uncompressedOldNormal[1] * oldNormalScale + uncompressedNewNormal[1] * newNormalScale; + outNormal[2] = uncompressedOldNormal[2] * oldNormalScale + uncompressedNewNormal[2] * newNormalScale; + +// VectorNormalize (outNormal); + } + VectorArrayNormalize((vec4_t *)tess.normal[tess.numVertexes], numVerts); + } +#endif + float *outXyz, *outNormal; + mdvVertex_t *newVerts; + int vertNum; + + newVerts = surf->verts + backEnd.currentEntity->e.frame * surf->numVerts; + + outXyz = tess.xyz[tess.numVertexes]; + outNormal = tess.normal[tess.numVertexes]; + + if (backlerp == 0) + { + // + // just copy the vertexes + // + + for (vertNum=0 ; vertNum < surf->numVerts ; vertNum++) + { + VectorCopy(newVerts->xyz, outXyz); + VectorCopy(newVerts->normal, outNormal); + newVerts++; + outXyz += 4; + outNormal += 4; + } + } + else + { + // + // interpolate and copy the vertex and normal + // + + mdvVertex_t *oldVerts; + + oldVerts = surf->verts + backEnd.currentEntity->e.oldframe * surf->numVerts; + + for (vertNum=0 ; vertNum < surf->numVerts ; vertNum++) + { + VectorLerp(backlerp, newVerts->xyz, oldVerts->xyz, outXyz); + VectorLerp(backlerp, newVerts->normal, oldVerts->normal, outNormal); + //VectorNormalize(outNormal); + newVerts++; + oldVerts++; + outXyz += 4; + outNormal += 4; + } + VectorArrayNormalize((vec4_t *)tess.normal[tess.numVertexes], surf->numVerts); + } + +} + +static void LerpMeshVertexes(mdvSurface_t *surf, float backlerp) +{ +#if 0 +#if idppc_altivec + if (com_altivec->integer) { + // must be in a seperate function or G3 systems will crash. + LerpMeshVertexes_altivec( surf, backlerp ); + return; + } +#endif // idppc_altivec +#endif + LerpMeshVertexes_scalar( surf, backlerp ); +} + + +/* +============= +RB_SurfaceMesh +============= +*/ +static void RB_SurfaceMesh(mdvSurface_t *surface) { + int j; + float backlerp; + srfTriangle_t *triangles; + mdvSt_t *texCoords; + int indexes; + int Bob, Doug; + int numVerts; + + if ( backEnd.currentEntity->e.oldframe == backEnd.currentEntity->e.frame ) { + backlerp = 0; + } else { + backlerp = backEnd.currentEntity->e.backlerp; + } + + RB_CHECKOVERFLOW( surface->numVerts, surface->numTriangles*3 ); + + LerpMeshVertexes (surface, backlerp); + + triangles = surface->triangles; + indexes = surface->numTriangles * 3; + Bob = tess.numIndexes; + Doug = tess.numVertexes; + for (j = 0 ; j < surface->numTriangles ; j++) { + tess.indexes[Bob + j*3 + 0] = Doug + triangles[j].indexes[0]; + tess.indexes[Bob + j*3 + 1] = Doug + triangles[j].indexes[1]; + tess.indexes[Bob + j*3 + 2] = Doug + triangles[j].indexes[2]; + } + tess.numIndexes += indexes; + + texCoords = surface->st; + + numVerts = surface->numVerts; + for ( j = 0; j < numVerts; j++ ) { + tess.texCoords[Doug + j][0][0] = texCoords[j].st[0]; + tess.texCoords[Doug + j][0][1] = texCoords[j].st[1]; + // FIXME: fill in lightmapST for completeness? + } + + tess.numVertexes += surface->numVerts; + +} + + +/* +============== +RB_SurfaceFace +============== +*/ +static void RB_SurfaceFace( srfSurfaceFace_t *srf ) { + if( RB_SurfaceHelperVBO (srf->vbo, srf->ibo, srf->numVerts, srf->numTriangles * 3, + srf->firstIndex, srf->minIndex, srf->maxIndex, srf->dlightBits, srf->pshadowBits, qtrue ) ) + { + return; + } + + RB_SurfaceHelper(srf->numVerts, srf->verts, srf->numTriangles, + srf->triangles, srf->dlightBits, srf->pshadowBits); +} + + +static float LodErrorForVolume( vec3_t local, float radius ) { + vec3_t world; + float d; + + // never let it go negative + if ( r_lodCurveError->value < 0 ) { + return 0; + } + + world[0] = local[0] * backEnd.or.axis[0][0] + local[1] * backEnd.or.axis[1][0] + + local[2] * backEnd.or.axis[2][0] + backEnd.or.origin[0]; + world[1] = local[0] * backEnd.or.axis[0][1] + local[1] * backEnd.or.axis[1][1] + + local[2] * backEnd.or.axis[2][1] + backEnd.or.origin[1]; + world[2] = local[0] * backEnd.or.axis[0][2] + local[1] * backEnd.or.axis[1][2] + + local[2] * backEnd.or.axis[2][2] + backEnd.or.origin[2]; + + VectorSubtract( world, backEnd.viewParms.or.origin, world ); + d = DotProduct( world, backEnd.viewParms.or.axis[0] ); + + if ( d < 0 ) { + d = -d; + } + d -= radius; + if ( d < 1 ) { + d = 1; + } + + return r_lodCurveError->value / d; +} + +/* +============= +RB_SurfaceGrid + +Just copy the grid of points and triangulate +============= +*/ +static void RB_SurfaceGrid( srfGridMesh_t *srf ) { + int i, j; + float *xyz; + float *texCoords, *lightCoords; + float *normal; +#ifdef USE_VERT_TANGENT_SPACE + float *tangent, *bitangent; +#endif + float *color, *lightdir; + srfVert_t *dv; + int rows, irows, vrows; + int used; + int widthTable[MAX_GRID_SIZE]; + int heightTable[MAX_GRID_SIZE]; + float lodError; + int lodWidth, lodHeight; + int numVertexes; + int dlightBits; + int pshadowBits; + //int *vDlightBits; + + if( RB_SurfaceHelperVBO (srf->vbo, srf->ibo, srf->numVerts, srf->numTriangles * 3, + srf->firstIndex, srf->minIndex, srf->maxIndex, srf->dlightBits, srf->pshadowBits, qtrue ) ) + { + return; + } + + dlightBits = srf->dlightBits; + tess.dlightBits |= dlightBits; + + pshadowBits = srf->pshadowBits; + tess.pshadowBits |= pshadowBits; + + // determine the allowable discrepance + lodError = LodErrorForVolume( srf->lodOrigin, srf->lodRadius ); + + // determine which rows and columns of the subdivision + // we are actually going to use + widthTable[0] = 0; + lodWidth = 1; + for ( i = 1 ; i < srf->width-1 ; i++ ) { + if ( srf->widthLodError[i] <= lodError ) { + widthTable[lodWidth] = i; + lodWidth++; + } + } + widthTable[lodWidth] = srf->width-1; + lodWidth++; + + heightTable[0] = 0; + lodHeight = 1; + for ( i = 1 ; i < srf->height-1 ; i++ ) { + if ( srf->heightLodError[i] <= lodError ) { + heightTable[lodHeight] = i; + lodHeight++; + } + } + heightTable[lodHeight] = srf->height-1; + lodHeight++; + + + // very large grids may have more points or indexes than can be fit + // in the tess structure, so we may have to issue it in multiple passes + + used = 0; + while ( used < lodHeight - 1 ) { + // see how many rows of both verts and indexes we can add without overflowing + do { + vrows = ( SHADER_MAX_VERTEXES - tess.numVertexes ) / lodWidth; + irows = ( SHADER_MAX_INDEXES - tess.numIndexes ) / ( lodWidth * 6 ); + + // if we don't have enough space for at least one strip, flush the buffer + if ( vrows < 2 || irows < 1 ) { + RB_EndSurface(); + RB_BeginSurface(tess.shader, tess.fogNum ); + } else { + break; + } + } while ( 1 ); + + rows = irows; + if ( vrows < irows + 1 ) { + rows = vrows - 1; + } + if ( used + rows > lodHeight ) { + rows = lodHeight - used; + } + + numVertexes = tess.numVertexes; + + xyz = tess.xyz[numVertexes]; + normal = tess.normal[numVertexes]; +#ifdef USE_VERT_TANGENT_SPACE + tangent = tess.tangent[numVertexes]; + bitangent = tess.bitangent[numVertexes]; +#endif + texCoords = tess.texCoords[numVertexes][0]; + lightCoords = tess.texCoords[numVertexes][1]; + color = tess.vertexColors[numVertexes]; + lightdir = tess.lightdir[numVertexes]; + //vDlightBits = &tess.vertexDlightBits[numVertexes]; + + for ( i = 0 ; i < rows ; i++ ) { + for ( j = 0 ; j < lodWidth ; j++ ) { + dv = srf->verts + heightTable[ used + i ] * srf->width + + widthTable[ j ]; + + if ( tess.shader->vertexAttribs & ATTR_POSITION ) + { + VectorCopy(dv->xyz, xyz); + xyz += 4; + } + + if ( tess.shader->vertexAttribs & ATTR_NORMAL ) + { + VectorCopy(dv->normal, normal); + normal += 4; + } + +#ifdef USE_VERT_TANGENT_SPACE + if ( tess.shader->vertexAttribs & ATTR_TANGENT ) + { + VectorCopy(dv->tangent, tangent); + tangent += 4; + } + + if ( tess.shader->vertexAttribs & ATTR_BITANGENT ) + { + VectorCopy(dv->bitangent, bitangent); + bitangent += 4; + } +#endif + if ( tess.shader->vertexAttribs & ATTR_TEXCOORD ) + { + VectorCopy2(dv->st, texCoords); + texCoords += 4; + } + + if ( tess.shader->vertexAttribs & ATTR_LIGHTCOORD ) + { + VectorCopy2(dv->lightmap, lightCoords); + lightCoords += 4; + } + + if ( tess.shader->vertexAttribs & ATTR_COLOR ) + { + VectorCopy4(dv->vertexColors, color); + color += 4; + } + + if ( tess.shader->vertexAttribs & ATTR_LIGHTDIRECTION ) + { + VectorCopy(dv->lightdir, lightdir); + lightdir += 4; + } + + //*vDlightBits++ = dlightBits; + } + } + + + // add the indexes + { + int numIndexes; + int w, h; + + h = rows - 1; + w = lodWidth - 1; + numIndexes = tess.numIndexes; + for (i = 0 ; i < h ; i++) { + for (j = 0 ; j < w ; j++) { + int v1, v2, v3, v4; + + // vertex order to be reckognized as tristrips + v1 = numVertexes + i*lodWidth + j + 1; + v2 = v1 - 1; + v3 = v2 + lodWidth; + v4 = v3 + 1; + + tess.indexes[numIndexes] = v2; + tess.indexes[numIndexes+1] = v3; + tess.indexes[numIndexes+2] = v1; + + tess.indexes[numIndexes+3] = v1; + tess.indexes[numIndexes+4] = v3; + tess.indexes[numIndexes+5] = v4; + numIndexes += 6; + } + } + + tess.numIndexes = numIndexes; + } + + tess.numVertexes += rows * lodWidth; + + used += rows - 1; + } +} + + +/* +=========================================================================== + +NULL MODEL + +=========================================================================== +*/ + +/* +=================== +RB_SurfaceAxis + +Draws x/y/z lines from the origin for orientation debugging +=================== +*/ +static void RB_SurfaceAxis( void ) { + // FIXME: implement this +#if 0 + GL_Bind( tr.whiteImage ); + qglLineWidth( 3 ); + qglBegin( GL_LINES ); + qglColor3f( 1,0,0 ); + qglVertex3f( 0,0,0 ); + qglVertex3f( 16,0,0 ); + qglColor3f( 0,1,0 ); + qglVertex3f( 0,0,0 ); + qglVertex3f( 0,16,0 ); + qglColor3f( 0,0,1 ); + qglVertex3f( 0,0,0 ); + qglVertex3f( 0,0,16 ); + qglEnd(); + qglLineWidth( 1 ); +#endif +} + +//=========================================================================== + +/* +==================== +RB_SurfaceEntity + +Entities that have a single procedurally generated surface +==================== +*/ +static void RB_SurfaceEntity( surfaceType_t *surfType ) { + switch( backEnd.currentEntity->e.reType ) { + case RT_SPRITE: + RB_SurfaceSprite(); + break; + case RT_BEAM: + RB_SurfaceBeam(); + break; + case RT_RAIL_CORE: + RB_SurfaceRailCore(); + break; + case RT_RAIL_RINGS: + RB_SurfaceRailRings(); + break; + case RT_LIGHTNING: + RB_SurfaceLightningBolt(); + break; + default: + RB_SurfaceAxis(); + break; + } + return; +} + +static void RB_SurfaceBad( surfaceType_t *surfType ) { + ri.Printf( PRINT_ALL, "Bad surface tesselated.\n" ); +} + +static void RB_SurfaceFlare(srfFlare_t *surf) +{ + if (r_flares->integer) + RB_AddFlare(surf, tess.fogNum, surf->origin, surf->color, surf->normal); +} + +static void RB_SurfaceVBOMesh(srfVBOMesh_t * srf) +{ + RB_SurfaceHelperVBO (srf->vbo, srf->ibo, srf->numVerts, srf->numIndexes, srf->firstIndex, + srf->minIndex, srf->maxIndex, srf->dlightBits, srf->pshadowBits, qfalse ); +} + +void RB_SurfaceVBOMDVMesh(srfVBOMDVMesh_t * surface) +{ + //mdvModel_t *mdvModel; + //mdvSurface_t *mdvSurface; + refEntity_t *refEnt; + + GLimp_LogComment("--- RB_SurfaceVBOMDVMesh ---\n"); + + if(!surface->vbo || !surface->ibo) + return; + + //RB_CheckVBOandIBO(surface->vbo, surface->ibo); + RB_EndSurface(); + RB_BeginSurface(tess.shader, tess.fogNum); + + R_BindVBO(surface->vbo); + R_BindIBO(surface->ibo); + + tess.useInternalVBO = qfalse; + + tess.numIndexes += surface->numIndexes; + tess.numVertexes += surface->numVerts; + tess.minIndex = surface->minIndex; + tess.maxIndex = surface->maxIndex; + + //mdvModel = surface->mdvModel; + //mdvSurface = surface->mdvSurface; + + refEnt = &backEnd.currentEntity->e; + + if(refEnt->oldframe == refEnt->frame) + { + glState.vertexAttribsInterpolation = 0; + } + else + { + glState.vertexAttribsInterpolation = refEnt->backlerp; + } + + glState.vertexAttribsOldFrame = refEnt->oldframe; + glState.vertexAttribsNewFrame = refEnt->frame; + + RB_EndSurface(); + + // So we don't lerp surfaces that shouldn't be lerped + glState.vertexAttribsInterpolation = 0; +} + +static void RB_SurfaceDisplayList( srfDisplayList_t *surf ) { + // all apropriate state must be set in RB_BeginSurface + // this isn't implemented yet... + qglCallList( surf->listNum ); +} + +static void RB_SurfaceSkip( void *surf ) { +} + + +void (*rb_surfaceTable[SF_NUM_SURFACE_TYPES])( void *) = { + (void(*)(void*))RB_SurfaceBad, // SF_BAD, + (void(*)(void*))RB_SurfaceSkip, // SF_SKIP, + (void(*)(void*))RB_SurfaceFace, // SF_FACE, + (void(*)(void*))RB_SurfaceGrid, // SF_GRID, + (void(*)(void*))RB_SurfaceTriangles, // SF_TRIANGLES, + (void(*)(void*))RB_SurfacePolychain, // SF_POLY, + (void(*)(void*))RB_SurfaceMesh, // SF_MDV, + (void(*)(void*))RB_SurfaceAnim, // SF_MD4, +#ifdef RAVENMD4 + (void(*)(void*))RB_MDRSurfaceAnim, // SF_MDR, +#endif + (void(*)(void*))RB_IQMSurfaceAnim, // SF_IQM, + (void(*)(void*))RB_SurfaceFlare, // SF_FLARE, + (void(*)(void*))RB_SurfaceEntity, // SF_ENTITY + (void(*)(void*))RB_SurfaceDisplayList, // SF_DISPLAY_LIST + (void(*)(void*))RB_SurfaceVBOMesh, // SF_VBO_MESH, + (void(*)(void*))RB_SurfaceVBOMDVMesh, // SF_VBO_MDVMESH +}; 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