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184 lines
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<div class="headertitle"><div class="title">lightlut.c</div></div>
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<a href="lightlut_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#include "<a class="code" href="internal_8h.html">internal.h</a>"</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span> </div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"><a class="line" href="lightlut_8c.html#a9b8b3517fe8b867689551801a69b011a"> 3</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="lightlut_8c.html#a9b8b3517fe8b867689551801a69b011a">LightLut_FromArray</a>(C3D_LightLut* lut, <span class="keywordtype">float</span>* <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>)</div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span>{</div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> <span class="keywordtype">int</span> i;</div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span> <span class="keywordflow">for</span> (i = 0; i < 256; i ++)</div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span> {</div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span> <span class="keywordtype">float</span> in = <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[i], diff = <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[i+256];</div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span> </div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> u32 val = 0;</div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> <span class="keywordflow">if</span> (in > 0.0f)</div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> {</div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> in *= 0x1000;</div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> val = (in < 0x1000) ? (u32)in : 0xFFF;</div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> }</div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> u32 val2 = 0;</div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> <span class="keywordflow">if</span> (diff != 0.0f)</div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> {</div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> <span class="keywordflow">if</span> (diff < 0)</div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> {</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> diff = -diff;</div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> val2 = 0x800;</div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> }</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> diff *= 0x800;</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> val2 |= (diff < 0x800) ? (u32)diff : 0x7FF;</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> }</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> lut->data[i] = val | (val2 << 12);</div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> }</div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span>}</div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"><a class="line" href="lightlut_8c.html#a5fc17b58965a82427775599c4ba5525a"> 33</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="lightlut_8c.html#a5fc17b58965a82427775599c4ba5525a">LightLut_FromFunc</a>(C3D_LightLut* lut, C3D_LightLutFunc func, <span class="keywordtype">float</span> param, <span class="keywordtype">bool</span> negative)</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span>{</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keywordtype">int</span> i;</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordtype">float</span> <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[512];</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> memset(<a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>, 0, <span class="keyword">sizeof</span>(<a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>));</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keywordtype">int</span> min = negative ? (-128) : 0;</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="keywordtype">int</span> max = negative ? 128 : 256;</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">for</span> (i = min; i <= max; i ++)</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> {</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keywordtype">float</span> x = (float)i/max;</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="keywordtype">float</span> val = func(x, param);</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keywordtype">int</span> idx = negative ? (i & 0xFF) : i;</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordflow">if</span> (i < max)</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[idx] = val;</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keywordflow">if</span> (i > min)</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[idx+255] = val-<a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[idx-1];</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> }</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <a class="code hl_function" href="lightlut_8c.html#a9b8b3517fe8b867689551801a69b011a">LightLut_FromArray</a>(lut, <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>);</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span>}</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> </div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"><a class="line" href="lightlut_8c.html#aae86ce8989d5bdc85c62d0fc1aa85105"> 53</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="lightlut_8c.html#aae86ce8989d5bdc85c62d0fc1aa85105">LightLutDA_Create</a>(C3D_LightLutDA* lut, C3D_LightLutFuncDA func, <span class="keywordtype">float</span> from, <span class="keywordtype">float</span> to, <span class="keywordtype">float</span> arg0, <span class="keywordtype">float</span> arg1)</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span>{</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordtype">int</span> i;</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keywordtype">float</span> <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[512];</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keywordtype">float</span> range = to-from;</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> lut->scale = 1.0f / range;</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> lut->bias = -from*lut->scale;</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> </div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keywordflow">for</span> (i = 0; i <= 256; i ++)</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> {</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keywordtype">float</span> x = from + range*i/256.0f;</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keywordtype">float</span> val = func(x, arg0, arg1);</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">if</span> (i < 256)</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[i] = val;</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keywordflow">if</span> (i > 0)</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[i+255] = val-<a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>[i-1];</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> }</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> </div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <a class="code hl_function" href="lightlut_8c.html#a9b8b3517fe8b867689551801a69b011a">LightLut_FromArray</a>(&lut->lut, <a class="code hl_variable" href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a>);</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span>}</div>
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<div class="ttc" id="ainternal_8h_html"><div class="ttname"><a href="internal_8h.html">internal.h</a></div></div>
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<div class="ttc" id="alightlut_8c_html_a5fc17b58965a82427775599c4ba5525a"><div class="ttname"><a href="lightlut_8c.html#a5fc17b58965a82427775599c4ba5525a">LightLut_FromFunc</a></div><div class="ttdeci">void LightLut_FromFunc(C3D_LightLut *lut, C3D_LightLutFunc func, float param, bool negative)</div><div class="ttdef"><b>Definition:</b> <a href="lightlut_8c_source.html#l00033">lightlut.c:33</a></div></div>
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<div class="ttc" id="alightlut_8c_html_a9b8b3517fe8b867689551801a69b011a"><div class="ttname"><a href="lightlut_8c.html#a9b8b3517fe8b867689551801a69b011a">LightLut_FromArray</a></div><div class="ttdeci">void LightLut_FromArray(C3D_LightLut *lut, float *data)</div><div class="ttdef"><b>Definition:</b> <a href="lightlut_8c_source.html#l00003">lightlut.c:3</a></div></div>
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<div class="ttc" id="alightlut_8c_html_aae86ce8989d5bdc85c62d0fc1aa85105"><div class="ttname"><a href="lightlut_8c.html#aae86ce8989d5bdc85c62d0fc1aa85105">LightLutDA_Create</a></div><div class="ttdeci">void LightLutDA_Create(C3D_LightLutDA *lut, C3D_LightLutFuncDA func, float from, float to, float arg0, float arg1)</div><div class="ttdef"><b>Definition:</b> <a href="lightlut_8c_source.html#l00053">lightlut.c:53</a></div></div>
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<div class="ttc" id="auniforms_8c_html_a872e8b5e85fef9e42007068199581495"><div class="ttname"><a href="uniforms_8c.html#a872e8b5e85fef9e42007068199581495">data</a></div><div class="ttdeci">float24Uniform_s * data</div><div class="ttdef"><b>Definition:</b> <a href="uniforms_8c_source.html#l00016">uniforms.c:16</a></div></div>
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