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nuclear@1
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1 #include "opengl.h"
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2 #include "geom.h"
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3
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4 #ifdef SINGLE_PRECISION_MATH
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5 #define ELEM_TYPE GL_FLOAT
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6 #else
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7 #define ELEM_TYPE GL_DOUBLE
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8 #endif
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9
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10 void draw_mesh(unsigned int prim, int num_verts, const Vertex *vbuf, const unsigned int *ibuf, int attr_tang_loc)
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11 {
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12 glEnableClientState(GL_VERTEX_ARRAY);
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13 glVertexPointer(3, ELEM_TYPE, sizeof *vbuf, &vbuf->pos);
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14
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15 glEnableClientState(GL_NORMAL_ARRAY);
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16 glNormalPointer(ELEM_TYPE, sizeof *vbuf, &vbuf->norm);
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17
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18 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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19 glTexCoordPointer(2, ELEM_TYPE, sizeof *vbuf, &vbuf->tc);
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20
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21 if(attr_tang_loc >= 0) {
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22 glEnableVertexAttribArrayARB(attr_tang_loc);
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23 glVertexAttribPointerARB(attr_tang_loc, 3, ELEM_TYPE, GL_FALSE, sizeof *vbuf, &vbuf->tang);
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24 }
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25
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26 if(ibuf) {
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27 glDrawElements(prim, num_verts, GL_UNSIGNED_INT, ibuf);
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28 } else {
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29 glDrawArrays(prim, 0, num_verts);
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30 }
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31
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32 glDisableClientState(GL_VERTEX_ARRAY);
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33 glDisableClientState(GL_NORMAL_ARRAY);
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34 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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35
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36 if(attr_tang_loc >= 0) {
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37 glDisableVertexAttribArrayARB(attr_tang_loc);
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38 }
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39 #if 0
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40 glBegin(GL_QUADS);
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41 for(int i=0; i<count; i++) {
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42 for(int j=0; j<4; j++) {
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43 const Vertex *v = vbuf + ibuf[i * 4 + j];
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44 glNormal3f(v->norm.x, v->norm.y, v->norm.z);
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45 glVertex3f(v->pos.x, v->pos.y, v->pos.z);
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46 }
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47 }
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48 glEnd();
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49 #endif
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50 }
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