Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/freeglut/src/fg_gl2.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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1 /*
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2 * fg_gl2.c
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3 *
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4 * Load OpenGL (ES) 2.0 functions used by fg_geometry
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5 *
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6 * Copyright (C) 2012 Sylvain Beucler
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7 *
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8 * Permission is hereby granted, free of charge, to any person obtaining a
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9 * copy of this software and associated documentation files (the "Software"),
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10 * to deal in the Software without restriction, including without limitation
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11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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12 * and/or sell copies of the Software, and to permit persons to whom the
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13 * Software is furnished to do so, subject to the following conditions:
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14 *
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15 * The above copyright notice and this permission notice shall be included
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16 * in all copies or substantial portions of the Software.
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17 *
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18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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21 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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22 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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24 */
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25
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26 #include <GL/freeglut.h>
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27 #include "fg_internal.h"
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28 #include "fg_gl2.h"
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30 #ifndef GL_ES_VERSION_2_0
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31 /* GLES2 has the corresponding entry points built-in, and these fgh-prefixed
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32 * names are defined in fg_gl2.h header to reference them, for any other case,
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33 * define them as function pointers here.
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34 */
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35 FGH_PFNGLGENBUFFERSPROC fghGenBuffers;
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36 FGH_PFNGLDELETEBUFFERSPROC fghDeleteBuffers;
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37 FGH_PFNGLBINDBUFFERPROC fghBindBuffer;
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38 FGH_PFNGLBUFFERDATAPROC fghBufferData;
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39 FGH_PFNGLENABLEVERTEXATTRIBARRAYPROC fghEnableVertexAttribArray;
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40 FGH_PFNGLDISABLEVERTEXATTRIBARRAYPROC fghDisableVertexAttribArray;
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41 FGH_PFNGLVERTEXATTRIBPOINTERPROC fghVertexAttribPointer;
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42 #endif
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44 void FGAPIENTRY glutSetVertexAttribCoord3(GLint attrib) {
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45 if (fgStructure.CurrentWindow != NULL)
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46 fgStructure.CurrentWindow->Window.attribute_v_coord = attrib;
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47 }
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49 void FGAPIENTRY glutSetVertexAttribNormal(GLint attrib) {
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50 if (fgStructure.CurrentWindow != NULL)
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51 fgStructure.CurrentWindow->Window.attribute_v_normal = attrib;
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52 }
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54 void FGAPIENTRY glutSetVertexAttribTexCoord2(GLint attrib) {
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55 if (fgStructure.CurrentWindow != NULL)
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56 fgStructure.CurrentWindow->Window.attribute_v_texture = attrib;
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57 }
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59 void fgInitGL2() {
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60 #ifdef GL_ES_VERSION_2_0
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61 fgState.HasOpenGL20 = (fgState.MajorVersion >= 2);
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62 #else
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63 /* TODO: Mesa returns a valid stub function, rather than NULL,
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64 when we request a non-existent function */
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65 #define CHECK(func, a) if ((a) == NULL) { fgWarning("fgInitGL2: " func " is NULL"); return; }
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66 CHECK("fghGenBuffers", fghGenBuffers = (FGH_PFNGLGENBUFFERSPROC)glutGetProcAddress("glGenBuffers"));
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67 CHECK("fghDeleteBuffers", fghDeleteBuffers = (FGH_PFNGLDELETEBUFFERSPROC)glutGetProcAddress("glDeleteBuffers"));
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68 CHECK("fghBindBuffer", fghBindBuffer = (FGH_PFNGLBINDBUFFERPROC)glutGetProcAddress("glBindBuffer"));
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69 CHECK("fghBufferData", fghBufferData = (FGH_PFNGLBUFFERDATAPROC)glutGetProcAddress("glBufferData"));
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70 CHECK("fghVertexAttribPointer", fghVertexAttribPointer = (FGH_PFNGLVERTEXATTRIBPOINTERPROC)glutGetProcAddress("glVertexAttribPointer"));
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71 CHECK("fghEnableVertexAttribArray", fghEnableVertexAttribArray = (FGH_PFNGLENABLEVERTEXATTRIBARRAYPROC)glutGetProcAddress("glEnableVertexAttribArray"));
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72 CHECK("fghDisableVertexAttribArray", fghDisableVertexAttribArray = (FGH_PFNGLDISABLEVERTEXATTRIBARRAYPROC)glutGetProcAddress("glDisableVertexAttribArray"));
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73 #undef CHECK
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74 fgState.HasOpenGL20 = 1;
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75 #endif
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76 }