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-rw-r--r--Spear/Render/RenderModel.c464
1 files changed, 232 insertions, 232 deletions
diff --git a/Spear/Render/RenderModel.c b/Spear/Render/RenderModel.c
index 3d18a4b..1543052 100644
--- a/Spear/Render/RenderModel.c
+++ b/Spear/Render/RenderModel.c
@@ -1,232 +1,232 @@
1#include "RenderModel.h" 1#include "RenderModel.h"
2#include <stdlib.h> // free 2#include <stdlib.h> // free
3#include <string.h> // memcpy 3#include <string.h> // memcpy
4#include <stdio.h> 4#include <stdio.h>
5 5
6 6
7static void safe_free (void* ptr) 7static void safe_free (void* ptr)
8{ 8{
9 if (ptr) 9 if (ptr)
10 { 10 {
11 free (ptr); 11 free (ptr);
12 ptr = 0; 12 ptr = 0;
13 } 13 }
14} 14}
15 15
16 16
17/// Populate elements of an animated model to be rendered from 17/// Populate elements of an animated model to be rendered from
18/// start to end in a loop. 18/// start to end in a loop.
19/*int populate_elements_animated (Model* model_asset, RenderModel* model) 19/*int populate_elements_animated (Model* model_asset, RenderModel* model)
20{ 20{
21 size_t nverts = model_asset->numVertices; 21 size_t nverts = model_asset->numVertices;
22 size_t ntriangles = model_asset->numTriangles; 22 size_t ntriangles = model_asset->numTriangles;
23 size_t nframes = model_asset->numFrames; 23 size_t nframes = model_asset->numFrames;
24 size_t n = nframes * ntriangles * 3; 24 size_t n = nframes * ntriangles * 3;
25 25
26 model->elements = malloc (56 * n); 26 model->elements = malloc (56 * n);
27 if (!model->elements) return -1; 27 if (!model->elements) return -1;
28 28
29 // Populate elements. 29 // Populate elements.
30 30
31 size_t f, i; 31 size_t f, i;
32 32
33 char* elem = (char*) model->elements; 33 char* elem = (char*) model->elements;
34 vec3* v1 = model_asset->vertices; 34 vec3* v1 = model_asset->vertices;
35 vec3* v2 = v1 + nverts; 35 vec3* v2 = v1 + nverts;
36 vec3* n1 = model_asset->normals; 36 vec3* n1 = model_asset->normals;
37 vec3* n2 = n1 + nverts; 37 vec3* n2 = n1 + nverts;
38 texCoord* tex = model_asset->texCoords; 38 texCoord* tex = model_asset->texCoords;
39 39
40 for (f = 0; f < nframes; ++f) 40 for (f = 0; f < nframes; ++f)
41 { 41 {
42 triangle* t = model_asset->triangles; 42 triangle* t = model_asset->triangles;
43 43
44 for (i = 0; i < ntriangles; ++i) 44 for (i = 0; i < ntriangles; ++i)
45 { 45 {
46 *((vec3*) elem) = v1[t->vertexIndices[0]]; 46 *((vec3*) elem) = v1[t->vertexIndices[0]];
47 *((vec3*) (elem + 12)) = v2[t->vertexIndices[0]]; 47 *((vec3*) (elem + 12)) = v2[t->vertexIndices[0]];
48 *((vec3*) (elem + 24)) = n1[t->vertexIndices[0]]; 48 *((vec3*) (elem + 24)) = n1[t->vertexIndices[0]];
49 *((vec3*) (elem + 36)) = n2[t->vertexIndices[0]]; 49 *((vec3*) (elem + 36)) = n2[t->vertexIndices[0]];
50 *((texCoord*) (elem + 48)) = tex[t->textureIndices[0]]; 50 *((texCoord*) (elem + 48)) = tex[t->textureIndices[0]];
51 elem += 56; 51 elem += 56;
52 52
53 *((vec3*) elem) = v1[t->vertexIndices[1]]; 53 *((vec3*) elem) = v1[t->vertexIndices[1]];
54 *((vec3*) (elem + 12)) = v2[t->vertexIndices[1]]; 54 *((vec3*) (elem + 12)) = v2[t->vertexIndices[1]];
55 *((vec3*) (elem + 24)) = n1[t->vertexIndices[1]]; 55 *((vec3*) (elem + 24)) = n1[t->vertexIndices[1]];
56 *((vec3*) (elem + 36)) = n2[t->vertexIndices[1]]; 56 *((vec3*) (elem + 36)) = n2[t->vertexIndices[1]];
57 *((texCoord*) (elem + 48)) = tex[t->textureIndices[1]]; 57 *((texCoord*) (elem + 48)) = tex[t->textureIndices[1]];
58 elem += 56; 58 elem += 56;
59 59
60 *((vec3*) elem) = v1[t->vertexIndices[2]]; 60 *((vec3*) elem) = v1[t->vertexIndices[2]];
61 *((vec3*) (elem + 12)) = v2[t->vertexIndices[2]]; 61 *((vec3*) (elem + 12)) = v2[t->vertexIndices[2]];
62 *((vec3*) (elem + 24)) = n1[t->vertexIndices[2]]; 62 *((vec3*) (elem + 24)) = n1[t->vertexIndices[2]];
63 *((vec3*) (elem + 36)) = n2[t->vertexIndices[2]]; 63 *((vec3*) (elem + 36)) = n2[t->vertexIndices[2]];
64 *((texCoord*) (elem + 48)) = tex[t->textureIndices[2]]; 64 *((texCoord*) (elem + 48)) = tex[t->textureIndices[2]];
65 elem += 56; 65 elem += 56;
66 66
67 t++; 67 t++;
68 } 68 }
69 69
70 v1 += nverts; 70 v1 += nverts;
71 v2 += nverts; 71 v2 += nverts;
72 n1 += nverts; 72 n1 += nverts;
73 n2 += nverts; 73 n2 += nverts;
74 74
75 if (f == nframes-2) 75 if (f == nframes-2)
76 { 76 {
77 v2 = model_asset->vertices; 77 v2 = model_asset->vertices;
78 n2 = model_asset->normals; 78 n2 = model_asset->normals;
79 } 79 }
80 } 80 }
81 81
82 return 0; 82 return 0;
83}*/ 83}*/
84 84
85 85
86/// Populate elements of an animated model according to its frames 86/// Populate elements of an animated model according to its frames
87/// of animation. 87/// of animation.
88int populate_elements_animated (Model* model_asset, RenderModel* model) 88int populate_elements_animated (Model* model_asset, RenderModel* model)
89{ 89{
90 size_t nverts = model_asset->numVertices; 90 size_t nverts = model_asset->numVertices;
91 size_t ntriangles = model_asset->numTriangles; 91 size_t ntriangles = model_asset->numTriangles;
92 size_t nframes = model_asset->numFrames; 92 size_t nframes = model_asset->numFrames;
93 size_t n = nframes * ntriangles * 3; 93 size_t n = nframes * ntriangles * 3;
94 94
95 model->elements = malloc (56 * n); 95 model->elements = malloc (56 * n);
96 if (!model->elements) return -1; 96 if (!model->elements) return -1;
97 97
98 // Populate elements. 98 // Populate elements.
99 99
100 unsigned f, i, j, u; 100 unsigned f, i, j, u;
101 101
102 char* elem = (char*) model->elements; 102 char* elem = (char*) model->elements;
103 animation* anim = model_asset->animations; 103 animation* anim = model_asset->animations;
104 104
105 for (i = 0; i < model_asset->numAnimations; ++i, anim++) 105 for (i = 0; i < model_asset->numAnimations; ++i, anim++)
106 { 106 {
107 unsigned start = anim->start; 107 unsigned start = anim->start;
108 unsigned end = anim->end; 108 unsigned end = anim->end;
109 109
110 char singleFrameAnim = start == end; 110 char singleFrameAnim = start == end;
111 111
112 vec3* v1 = model_asset->vertices + start*nverts; 112 vec3* v1 = model_asset->vertices + start*nverts;
113 vec3* v2 = singleFrameAnim ? v1 : v1 + nverts; 113 vec3* v2 = singleFrameAnim ? v1 : v1 + nverts;
114 vec3* n1 = model_asset->normals + start*nverts; 114 vec3* n1 = model_asset->normals + start*nverts;
115 vec3* n2 = singleFrameAnim ? n1 : n1 + nverts; 115 vec3* n2 = singleFrameAnim ? n1 : n1 + nverts;
116 texCoord* tex = model_asset->texCoords; 116 texCoord* tex = model_asset->texCoords;
117 117
118 for (u = start; u <= end; ++u) 118 for (u = start; u <= end; ++u)
119 { 119 {
120 triangle* t = model_asset->triangles; 120 triangle* t = model_asset->triangles;
121 121
122 for (j = 0; j < ntriangles; ++j, t++) 122 for (j = 0; j < ntriangles; ++j, t++)
123 { 123 {
124 *((vec3*) elem) = v1[t->vertexIndices[0]]; 124 *((vec3*) elem) = v1[t->vertexIndices[0]];
125 *((vec3*) (elem + 12)) = v2[t->vertexIndices[0]]; 125 *((vec3*) (elem + 12)) = v2[t->vertexIndices[0]];
126 *((vec3*) (elem + 24)) = n1[t->vertexIndices[0]]; 126 *((vec3*) (elem + 24)) = n1[t->vertexIndices[0]];
127 *((vec3*) (elem + 36)) = n2[t->vertexIndices[0]]; 127 *((vec3*) (elem + 36)) = n2[t->vertexIndices[0]];
128 *((texCoord*) (elem + 48)) = tex[t->textureIndices[0]]; 128 *((texCoord*) (elem + 48)) = tex[t->textureIndices[0]];
129 elem += 56; 129 elem += 56;
130 130
131 *((vec3*) elem) = v1[t->vertexIndices[1]]; 131 *((vec3*) elem) = v1[t->vertexIndices[1]];
132 *((vec3*) (elem + 12)) = v2[t->vertexIndices[1]]; 132 *((vec3*) (elem + 12)) = v2[t->vertexIndices[1]];
133 *((vec3*) (elem + 24)) = n1[t->vertexIndices[1]]; 133 *((vec3*) (elem + 24)) = n1[t->vertexIndices[1]];
134 *((vec3*) (elem + 36)) = n2[t->vertexIndices[1]]; 134 *((vec3*) (elem + 36)) = n2[t->vertexIndices[1]];
135 *((texCoord*) (elem + 48)) = tex[t->textureIndices[1]]; 135 *((texCoord*) (elem + 48)) = tex[t->textureIndices[1]];
136 elem += 56; 136 elem += 56;
137 137
138 *((vec3*) elem) = v1[t->vertexIndices[2]]; 138 *((vec3*) elem) = v1[t->vertexIndices[2]];
139 *((vec3*) (elem + 12)) = v2[t->vertexIndices[2]]; 139 *((vec3*) (elem + 12)) = v2[t->vertexIndices[2]];
140 *((vec3*) (elem + 24)) = n1[t->vertexIndices[2]]; 140 *((vec3*) (elem + 24)) = n1[t->vertexIndices[2]];
141 *((vec3*) (elem + 36)) = n2[t->vertexIndices[2]]; 141 *((vec3*) (elem + 36)) = n2[t->vertexIndices[2]];
142 *((texCoord*) (elem + 48)) = tex[t->textureIndices[2]]; 142 *((texCoord*) (elem + 48)) = tex[t->textureIndices[2]];
143 elem += 56; 143 elem += 56;
144 } 144 }
145 145
146 // Advance to the next frame of animation of the current 146 // Advance to the next frame of animation of the current
147 // animation. 147 // animation.
148 v1 += nverts; 148 v1 += nverts;
149 v2 += nverts; 149 v2 += nverts;
150 n1 += nverts; 150 n1 += nverts;
151 n2 += nverts; 151 n2 += nverts;
152 152
153 // Reset the secondary pointers to the beginning of the 153 // Reset the secondary pointers to the beginning of the
154 // animation when we are about to reach the last frame. 154 // animation when we are about to reach the last frame.
155 if (u == end-1) 155 if (u == end-1)
156 { 156 {
157 v2 = model_asset->vertices + start*nverts; 157 v2 = model_asset->vertices + start*nverts;
158 n2 = model_asset->normals + start*nverts; 158 n2 = model_asset->normals + start*nverts;
159 } 159 }
160 } 160 }
161 } 161 }
162 162
163 return 0; 163 return 0;
164} 164}
165 165
166 166
167int populate_elements_static (Model* model_asset, RenderModel* model) 167int populate_elements_static (Model* model_asset, RenderModel* model)
168{ 168{
169 size_t nverts = model_asset->numVertices; 169 size_t nverts = model_asset->numVertices;
170 size_t ntriangles = model_asset->numTriangles; 170 size_t ntriangles = model_asset->numTriangles;
171 size_t n = ntriangles * 3; 171 size_t n = ntriangles * 3;
172 172
173 model->elements = malloc (32 * n); 173 model->elements = malloc (32 * n);
174 if (!model->elements) return -1; 174 if (!model->elements) return -1;
175 175
176 // Populate elements. 176 // Populate elements.
177 177
178 size_t f, i; 178 size_t f, i;
179 179
180 char* elem = (char*) model->elements; 180 char* elem = (char*) model->elements;
181 vec3* vert = model_asset->vertices; 181 vec3* vert = model_asset->vertices;
182 vec3* norm = model_asset->normals; 182 vec3* norm = model_asset->normals;
183 texCoord* tex = model_asset->texCoords; 183 texCoord* tex = model_asset->texCoords;
184 184
185 triangle* t = model_asset->triangles; 185 triangle* t = model_asset->triangles;
186 186
187 for (i = 0; i < ntriangles; ++i) 187 for (i = 0; i < ntriangles; ++i)
188 { 188 {
189 *((vec3*) elem) = vert[t->vertexIndices[0]]; 189 *((vec3*) elem) = vert[t->vertexIndices[0]];
190 *((vec3*) (elem + 12)) = norm[t->vertexIndices[0]]; 190 *((vec3*) (elem + 12)) = norm[t->vertexIndices[0]];
191 *((texCoord*) (elem + 24)) = tex[t->textureIndices[0]]; 191 *((texCoord*) (elem + 24)) = tex[t->textureIndices[0]];
192 elem += 32; 192 elem += 32;
193 193
194 *((vec3*) elem) = vert[t->vertexIndices[1]]; 194 *((vec3*) elem) = vert[t->vertexIndices[1]];
195 *((vec3*) (elem + 12)) = norm[t->vertexIndices[1]]; 195 *((vec3*) (elem + 12)) = norm[t->vertexIndices[1]];
196 *((texCoord*) (elem + 24)) = tex[t->textureIndices[1]]; 196 *((texCoord*) (elem + 24)) = tex[t->textureIndices[1]];
197 elem += 32; 197 elem += 32;
198 198
199 *((vec3*) elem) = vert[t->vertexIndices[2]]; 199 *((vec3*) elem) = vert[t->vertexIndices[2]];
200 *((vec3*) (elem + 12)) = norm[t->vertexIndices[2]]; 200 *((vec3*) (elem + 12)) = norm[t->vertexIndices[2]];
201 *((texCoord*) (elem + 24)) = tex[t->textureIndices[2]]; 201 *((texCoord*) (elem + 24)) = tex[t->textureIndices[2]];
202 elem += 32; 202 elem += 32;
203 203
204 t++; 204 t++;
205 } 205 }
206 206
207 return 0; 207 return 0;
208} 208}
209 209
210 210
211int render_model_from_model_asset (Model* model_asset, RenderModel* model) 211int render_model_from_model_asset (Model* model_asset, RenderModel* model)
212{ 212{
213 U32 ntriangles = model_asset->numTriangles; 213 U32 ntriangles = model_asset->numTriangles;
214 U32 nframes = model_asset->numFrames; 214 U32 nframes = model_asset->numFrames;
215 215
216 int result; 216 int result;
217 if (nframes > 1) result = populate_elements_animated (model_asset, model); 217 if (nframes > 1) result = populate_elements_animated (model_asset, model);
218 else result = populate_elements_static (model_asset, model); 218 else result = populate_elements_static (model_asset, model);
219 219
220 if (result != 0) return result; 220 if (result != 0) return result;
221 221
222 model->numFrames = nframes; 222 model->numFrames = nframes;
223 model->numVertices = ntriangles * 3; // Number of vertices per frame. 223 model->numVertices = ntriangles * 3; // Number of vertices per frame.
224 224
225 return 0; 225 return 0;
226} 226}
227 227
228 228
229void render_model_free (RenderModel* model) 229void render_model_free (RenderModel* model)
230{ 230{
231 safe_free (model->elements); 231 safe_free (model->elements);
232} 232}
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