67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
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/*
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* Copyright (c) 1993-1995 Argonaut Technologies Limited. All rights reserved.
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*
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* $Id: decalz.c 1.1 1995/08/31 16:52:48 sam Exp $
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* $Locker: $
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*
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* Decal triangles
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*/
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#include "zb.h"
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#include "shortcut.h"
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#include "blockops.h"
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#include "brassert.h"
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static char rscid[] = "$Id: decalz.c 1.1 1995/08/31 16:52:48 sam Exp $";
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void BR_ASM_CALL TriangleRenderPIZ2TAD(struct temp_vertex_fixed *v0, struct temp_vertex_fixed *v1,struct temp_vertex_fixed *v2)
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{
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/*
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* Render the undercolour
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*/
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zb.pi.current = BrIntToFixed(zb.material->index_base);
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TriangleRenderPIZ2(v0,v1,v2);
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/*
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* Render the texture
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*/
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TriangleRenderPIZ2TA(v0,v1,v2);
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}
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void BR_ASM_CALL TriangleRenderPIZ2TIAD(struct temp_vertex_fixed *v0, struct temp_vertex_fixed *v1,struct temp_vertex_fixed *v2)
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{
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struct temp_vertex_fixed tv[3];
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br_scalar b,r;
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/*
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* Make copies of the temp. vertices
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*/
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tv[0] = *v0; tv[1] = *v1; tv[2] = *v2;
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/*
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* Render the undercolour
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*/
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b = BrIntToScalar(zb.material->index_base);
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r = BR_CONST_DIV(BrIntToScalar(zb.material->index_range),256);
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tv[0].comp[C_I] = BrScalarToFixed(b + BR_MUL(r,BrFixedToScalar(v0->comp[C_I])));
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tv[1].comp[C_I] = BrScalarToFixed(b + BR_MUL(r,BrFixedToScalar(v1->comp[C_I])));
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tv[2].comp[C_I] = BrScalarToFixed(b + BR_MUL(r,BrFixedToScalar(v2->comp[C_I])));
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TriangleRenderPIZ2I(tv+0,tv+1,tv+2);
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#if 1
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/*
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* Render the texture
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*/
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r = BR_CONST_DIV(BrIntToScalar(zb.material->index_shade->height),256);
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tv[0].comp[C_I] = BrScalarToFixed(BR_MUL(r,BrFixedToScalar(v0->comp[C_I])));
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tv[1].comp[C_I] = BrScalarToFixed(BR_MUL(r,BrFixedToScalar(v1->comp[C_I])));
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tv[2].comp[C_I] = BrScalarToFixed(BR_MUL(r,BrFixedToScalar(v2->comp[C_I])));
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TriangleRenderPIZ2TIA(tv+0,tv+1,tv+2);
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#endif
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}
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