mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-21 01:50:53 +00:00
638 lines
14 KiB
C
638 lines
14 KiB
C
#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "QF/sys.h"
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#include "QF/GL/defines.h"
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#include "QF/GL/funcs.h"
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typedef void (*qfgl_func_t) (const GLvoid *);
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static const GLvoid *color_pointer;
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static GLsizei color_stride;
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static qfgl_func_t color_func;
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static int color_enabled = 0;
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static const GLvoid *edgeflag_pointer;
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static GLsizei edgeflag_stride;
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static int edgeflag_enabled = 0;
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static const GLvoid *index_pointer;
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static GLsizei index_stride;
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static qfgl_func_t index_func;
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static int index_enabled = 0;
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static const GLvoid *normal_pointer;
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static GLsizei normal_stride;
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static qfgl_func_t normal_func;
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static int normal_enabled = 0;
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static const GLvoid *texcoord_pointer;
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static GLsizei texcoord_stride;
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static qfgl_func_t texcoord_func;
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static int texcoord_enabled = 0;
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static const GLvoid *vertex_pointer;
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static GLsizei vertex_stride;
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static qfgl_func_t vertex_func;
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static int vertex_enabled = 0;
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static qfgl_func_t *color_functions[][8] = {
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{
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(qfgl_func_t *) (char *) &qfglColor3bv,
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(qfgl_func_t *) (char *) &qfglColor3ubv,
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(qfgl_func_t *) (char *) &qfglColor3sv,
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(qfgl_func_t *) (char *) &qfglColor3usv,
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(qfgl_func_t *) (char *) &qfglColor3iv,
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(qfgl_func_t *) (char *) &qfglColor3uiv,
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(qfgl_func_t *) (char *) &qfglColor3fv,
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(qfgl_func_t *) (char *) &qfglColor3dv,
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},
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{
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(qfgl_func_t *) (char *) &qfglColor4bv,
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(qfgl_func_t *) (char *) &qfglColor4ubv,
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(qfgl_func_t *) (char *) &qfglColor4sv,
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(qfgl_func_t *) (char *) &qfglColor4usv,
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(qfgl_func_t *) (char *) &qfglColor4iv,
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(qfgl_func_t *) (char *) &qfglColor4uiv,
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(qfgl_func_t *) (char *) &qfglColor4fv,
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(qfgl_func_t *) (char *) &qfglColor4dv,
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},
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};
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static qfgl_func_t *index_functions[] = {
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(qfgl_func_t *) (char *) &qfglIndexubv,
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(qfgl_func_t *) (char *) &qfglIndexsv,
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(qfgl_func_t *) (char *) &qfglIndexiv,
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(qfgl_func_t *) (char *) &qfglIndexfv,
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(qfgl_func_t *) (char *) &qfglIndexdv,
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};
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static qfgl_func_t *normal_functions[] = {
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(qfgl_func_t *) (char *) &qfglNormal3bv,
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(qfgl_func_t *) (char *) &qfglNormal3sv,
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(qfgl_func_t *) (char *) &qfglNormal3iv,
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(qfgl_func_t *) (char *) &qfglNormal3fv,
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(qfgl_func_t *) (char *) &qfglNormal3dv,
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};
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static qfgl_func_t *texcoord_functions[][4] = {
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{
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(qfgl_func_t *) (char *) &qfglTexCoord1sv,
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(qfgl_func_t *) (char *) &qfglTexCoord1iv,
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(qfgl_func_t *) (char *) &qfglTexCoord1fv,
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(qfgl_func_t *) (char *) &qfglTexCoord1dv,
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},
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{
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(qfgl_func_t *) (char *) &qfglTexCoord2sv,
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(qfgl_func_t *) (char *) &qfglTexCoord2iv,
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(qfgl_func_t *) (char *) &qfglTexCoord2fv,
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(qfgl_func_t *) (char *) &qfglTexCoord2dv,
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},
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{
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(qfgl_func_t *) (char *) &qfglTexCoord3sv,
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(qfgl_func_t *) (char *) &qfglTexCoord3iv,
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(qfgl_func_t *) (char *) &qfglTexCoord3fv,
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(qfgl_func_t *) (char *) &qfglTexCoord3dv,
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},
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{
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(qfgl_func_t *) (char *) &qfglTexCoord4sv,
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(qfgl_func_t *) (char *) &qfglTexCoord4iv,
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(qfgl_func_t *) (char *) &qfglTexCoord4fv,
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(qfgl_func_t *) (char *) &qfglTexCoord4dv,
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},
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};
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static qfgl_func_t *vertex_functions[][4] = {
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{
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(qfgl_func_t *) (char *) &qfglVertex2sv,
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(qfgl_func_t *) (char *) &qfglVertex2iv,
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(qfgl_func_t *) (char *) &qfglVertex2fv,
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(qfgl_func_t *) (char *) &qfglVertex2dv,
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},
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{
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(qfgl_func_t *) (char *) &qfglVertex3sv,
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(qfgl_func_t *) (char *) &qfglVertex3iv,
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(qfgl_func_t *) (char *) &qfglVertex3fv,
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(qfgl_func_t *) (char *) &qfglVertex3dv,
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},
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{
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(qfgl_func_t *) (char *) &qfglVertex4sv,
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(qfgl_func_t *) (char *) &qfglVertex4iv,
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(qfgl_func_t *) (char *) &qfglVertex4fv,
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(qfgl_func_t *) (char *) &qfglVertex4dv,
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},
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};
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static void
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qfgl_ColorPointer (GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
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{
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int index;
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int bytes = 0;
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switch (type) {
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case GL_BYTE:
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index = 0;
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bytes = sizeof (GLbyte);
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break;
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case GL_UNSIGNED_BYTE:
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index = 1;
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bytes = sizeof (GLubyte);
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break;
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case GL_SHORT:
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index = 2;
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bytes = sizeof (GLshort);
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break;
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case GL_UNSIGNED_SHORT:
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index = 3;
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bytes = sizeof (GLushort);
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break;
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case GL_INT:
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index = 4;
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bytes = sizeof (GLint);
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break;
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case GL_UNSIGNED_INT:
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index = 5;
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bytes = sizeof (GLuint);
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break;
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case GL_FLOAT:
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index = 6;
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bytes = sizeof (GLfloat);
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break;
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case GL_DOUBLE:
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index = 7;
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bytes = sizeof (GLdouble);
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break;
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default:
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return;
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}
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color_pointer = ptr;
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// color_stride = stride + size * bytes;
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color_stride = stride ? stride : size * bytes;
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color_func = *color_functions[size - 3][index];
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}
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static void
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qfgl_EdgeFlagPointer (GLsizei stride, const GLvoid *ptr)
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{
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edgeflag_pointer = ptr;
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edgeflag_stride = stride + sizeof (GLboolean);
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}
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static void
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qfgl_IndexPointer (GLenum type, GLsizei stride, const GLvoid *ptr)
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{
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int index;
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int bytes = 0;
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switch (type) {
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case GL_UNSIGNED_BYTE:
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index = 0;
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bytes = sizeof (GLubyte);
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break;
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case GL_SHORT:
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index = 1;
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bytes = sizeof (GLshort);
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break;
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case GL_INT:
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index = 2;
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bytes = sizeof (GLint);
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break;
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case GL_FLOAT:
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index = 3;
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bytes = sizeof (GLfloat);
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break;
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case GL_DOUBLE:
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index = 4;
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bytes = sizeof (GLdouble);
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break;
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default:
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return;
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}
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index_pointer = ptr;
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index_stride = stride + bytes;
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index_func = *index_functions[index];
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}
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static void
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qfgl_NormalPointer (GLenum type, GLsizei stride, const GLvoid *ptr)
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{
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int index;
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int bytes = 0;
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switch (type) {
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case GL_BYTE:
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index = 0;
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bytes = sizeof (GLbyte);
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break;
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case GL_SHORT:
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index = 1;
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bytes = sizeof (GLshort);
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break;
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case GL_INT:
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index = 2;
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bytes = sizeof (GLint);
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break;
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case GL_FLOAT:
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index = 3;
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bytes = sizeof (GLfloat);
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break;
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case GL_DOUBLE:
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index = 4;
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bytes = sizeof (GLdouble);
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break;
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default:
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return;
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}
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normal_pointer = ptr;
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normal_stride = stride + bytes;
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normal_func = *normal_functions[index];
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}
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static void
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qfgl_TexCoordPointer (GLint size, GLenum type, GLsizei stride,
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const GLvoid *ptr)
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{
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int index;
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int bytes = 0;
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switch (type) {
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case GL_SHORT:
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index = 0;
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bytes = sizeof (GLshort);
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break;
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case GL_INT:
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index = 1;
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bytes = sizeof (GLint);
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break;
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case GL_FLOAT:
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index = 2;
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bytes = sizeof (GLfloat);
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break;
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case GL_DOUBLE:
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index = 3;
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bytes = sizeof (GLdouble);
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break;
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default:
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return;
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}
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texcoord_pointer = ptr;
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texcoord_stride = stride + size * bytes;
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texcoord_func = *texcoord_functions[size - 1][index];
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}
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static void
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qfgl_VertexPointer (GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
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{
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int index;
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int bytes = 0;
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switch (type) {
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case GL_SHORT:
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index = 0;
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bytes = sizeof (GLshort);
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break;
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case GL_INT:
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index = 1;
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bytes = sizeof (GLint);
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break;
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case GL_FLOAT:
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index = 2;
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bytes = sizeof (GLfloat);
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break;
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case GL_DOUBLE:
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index = 3;
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bytes = sizeof (GLdouble);
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break;
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default:
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return;
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}
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vertex_pointer = ptr;
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vertex_stride = stride + size * bytes;
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vertex_func = *vertex_functions[size - 2][index];
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}
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static void
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qfgl_InterleavedArrays (GLenum format, GLsizei stride, const GLvoid *pointer)
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{
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const GLbyte *ptr = pointer;
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switch (format) {
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case GL_V2F:
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stride += 2 * sizeof (GLfloat);
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break;
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case GL_V3F:
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_C4UB_V2F:
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stride += 4 * sizeof (GLubyte);
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stride += 2 * sizeof (GLfloat);
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break;
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case GL_C4UB_V3F:
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stride += 4 * sizeof (GLubyte);
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_C3F_V3F:
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stride += 3 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_N3F_V3F:
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stride += 3 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_C4F_N3F_V3F:
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stride += 4 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_T2F_V3F:
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stride += 2 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_T4F_V4F:
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stride += 4 * sizeof (GLfloat);
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stride += 4 * sizeof (GLfloat);
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break;
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case GL_T2F_C4UB_V3F:
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stride += 2 * sizeof (GLfloat);
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stride += 4 * sizeof (GLubyte);
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_T2F_C3F_V3F:
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stride += 2 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_T2F_N3F_V3F:
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stride += 2 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_T2F_C4F_N3F_V3F:
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stride += 2 * sizeof (GLfloat);
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stride += 4 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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break;
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case GL_T4F_C4F_N3F_V4F:
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stride += 4 * sizeof (GLfloat);
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stride += 4 * sizeof (GLfloat);
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stride += 3 * sizeof (GLfloat);
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stride += 4 * sizeof (GLfloat);
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break;
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default:
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break;
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}
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switch (format) {
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case GL_T2F_V3F:
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case GL_T2F_C4UB_V3F:
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case GL_T2F_C3F_V3F:
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case GL_T2F_N3F_V3F:
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case GL_T2F_C4F_N3F_V3F:
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qfgl_TexCoordPointer (2, GL_FLOAT, stride - 2 * sizeof (GLfloat),
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ptr);
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ptr += 2 * sizeof (GLfloat);
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break;
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case GL_T4F_V4F:
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case GL_T4F_C4F_N3F_V4F:
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qfgl_TexCoordPointer (4, GL_FLOAT, stride - 4 * sizeof (GLfloat),
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ptr);
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ptr += 4 * sizeof (GLfloat);
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break;
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default:
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break;
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}
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switch (format) {
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case GL_C4UB_V2F:
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case GL_C4UB_V3F:
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case GL_T2F_C4UB_V3F:
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qfgl_ColorPointer (4, GL_UNSIGNED_BYTE,
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stride - 4 * sizeof (GLubyte), ptr);
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ptr += 4 * sizeof (GLubyte);
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break;
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case GL_C3F_V3F:
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case GL_T2F_C3F_V3F:
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qfgl_ColorPointer (3, GL_FLOAT, stride - 3 * sizeof (GLfloat),
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ptr);
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ptr += 3 * sizeof (GLfloat);
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break;
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case GL_C4F_N3F_V3F:
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case GL_T2F_C4F_N3F_V3F:
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case GL_T4F_C4F_N3F_V4F:
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qfgl_ColorPointer (4, GL_FLOAT, stride - 4 * sizeof (GLfloat),
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ptr);
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ptr += 4 * sizeof (GLfloat);
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break;
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default:
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break;
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}
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switch (format) {
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case GL_N3F_V3F:
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case GL_C4F_N3F_V3F:
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case GL_T2F_N3F_V3F:
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case GL_T2F_C4F_N3F_V3F:
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case GL_T4F_C4F_N3F_V4F:
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qfgl_NormalPointer (GL_FLOAT, stride - 3 * sizeof (GLfloat), ptr);
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ptr += 3 * sizeof (GLfloat);
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break;
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default:
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break;
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}
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switch (format) {
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case GL_V2F:
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case GL_C4UB_V2F:
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qfgl_VertexPointer (2, GL_FLOAT, stride - 2 * sizeof (GLfloat),
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ptr);
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break;
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case GL_V3F:
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case GL_C4UB_V3F:
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case GL_C3F_V3F:
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case GL_N3F_V3F:
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case GL_C4F_N3F_V3F:
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case GL_T2F_V3F:
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case GL_T2F_C4UB_V3F:
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case GL_T2F_C3F_V3F:
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case GL_T2F_N3F_V3F:
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case GL_T2F_C4F_N3F_V3F:
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qfgl_VertexPointer (3, GL_FLOAT, stride - 3 * sizeof (GLfloat),
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ptr);
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break;
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case GL_T4F_V4F:
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case GL_T4F_C4F_N3F_V4F:
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qfgl_VertexPointer (4, GL_FLOAT, stride - 4 * sizeof (GLfloat),
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ptr);
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break;
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default:
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break;
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}
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}
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static void
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qfgl_ArrayElement (GLint i)
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{
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if (texcoord_enabled)
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texcoord_func ((char*)texcoord_pointer + i * texcoord_stride);
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if (edgeflag_enabled)
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qfglEdgeFlagv ((byte*)edgeflag_pointer + i * edgeflag_stride);
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if (color_enabled)
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color_func ((char*)color_pointer + i * color_stride);
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if (normal_enabled)
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normal_func ((char*)normal_pointer + i * normal_stride);
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if (index_enabled)
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index_func ((char*)index_pointer + i * index_stride);
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if (vertex_enabled)
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vertex_func ((char*)vertex_pointer + i * vertex_stride);
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}
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static void
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qfgl_DrawArrays (GLenum mode, GLint first, GLsizei count)
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{
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GLint i;
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qfglBegin (mode);
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for (i = first; i < first + count; i++)
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qfgl_ArrayElement (i);
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qfglEnd ();
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}
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static void
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qfgl_DrawElements (GLenum mode, GLsizei count, GLenum type,
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const GLvoid * indices)
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{
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GLsizei i;
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const GLubyte *ub_indices;
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const GLushort *us_indices;
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const GLuint *ui_indices;
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switch (type) {
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case GL_UNSIGNED_BYTE:
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ub_indices = indices;
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|
for (i = 0; i < count; i++)
|
|
qfgl_ArrayElement (ub_indices[i]);
|
|
break;
|
|
case GL_UNSIGNED_SHORT:
|
|
us_indices = indices;
|
|
for (i = 0; i < count; i++)
|
|
qfgl_ArrayElement (us_indices[i]);
|
|
break;
|
|
case GL_UNSIGNED_INT:
|
|
ui_indices = indices;
|
|
for (i = 0; i < count; i++)
|
|
qfgl_ArrayElement (ui_indices[i]);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
qfgl_DrawRangeElements (GLenum mode, GLuint start, GLuint end, GLsizei count,
|
|
GLenum type, const GLvoid * indices)
|
|
{
|
|
GLsizei i;
|
|
const GLubyte *ub_indices;
|
|
const GLushort *us_indices;
|
|
const GLuint *ui_indices;
|
|
|
|
switch (type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
ub_indices = indices;
|
|
for (i = 0; i < count; i++)
|
|
if (ub_indices[i] >= start && ub_indices[i] <= end)
|
|
qfgl_ArrayElement (ub_indices[i]);
|
|
break;
|
|
case GL_UNSIGNED_SHORT:
|
|
us_indices = indices;
|
|
for (i = 0; i < count; i++)
|
|
if (us_indices[i] >= start && us_indices[i] <= end)
|
|
qfgl_ArrayElement (us_indices[i]);
|
|
break;
|
|
case GL_UNSIGNED_INT:
|
|
ui_indices = indices;
|
|
for (i = 0; i < count; i++)
|
|
if (ui_indices[i] >= start && ui_indices[i] <= end)
|
|
qfgl_ArrayElement (ui_indices[i]);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
client_state (GLenum cap, GLboolean state)
|
|
{
|
|
switch (cap) {
|
|
case GL_VERTEX_ARRAY:
|
|
vertex_enabled = state;
|
|
break;
|
|
case GL_NORMAL_ARRAY:
|
|
normal_enabled = state;
|
|
break;
|
|
case GL_COLOR_ARRAY:
|
|
color_enabled = state;
|
|
break;
|
|
case GL_INDEX_ARRAY:
|
|
index_enabled = state;
|
|
break;
|
|
case GL_TEXTURE_COORD_ARRAY:
|
|
texcoord_enabled = state;
|
|
break;
|
|
case GL_EDGE_FLAG_ARRAY:
|
|
edgeflag_enabled = state;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
qfgl_EnableClientState (GLenum cap)
|
|
{
|
|
client_state (cap, GL_TRUE);
|
|
}
|
|
|
|
static void
|
|
qfgl_DisableClientState (GLenum cap)
|
|
{
|
|
client_state (cap, GL_FALSE);
|
|
}
|
|
|
|
static void
|
|
qfgl_GetPointerv (GLenum pname, void **params)
|
|
{
|
|
Sys_Error ("GetPointerv not implemented");
|
|
}
|
|
|
|
static void
|
|
qfgl_PopClientAttrib (void)
|
|
{
|
|
Sys_Error ("PopClientAttrib not implemented");
|
|
}
|
|
|
|
static void
|
|
qfgl_PushClientAttrib (GLbitfield mask)
|
|
{
|
|
Sys_Error ("PushClientAttrib not implemented");
|
|
}
|
|
|
|
struct {
|
|
const char *name;
|
|
void *func;
|
|
} qfgl_functions [] = {
|
|
{"glColorPointer", qfgl_ColorPointer},
|
|
{"glEdgeFlagPointer", qfgl_EdgeFlagPointer},
|
|
{"glIndexPointer", qfgl_IndexPointer},
|
|
{"glNormalPointer", qfgl_NormalPointer},
|
|
{"glTexCoordPointer", qfgl_TexCoordPointer},
|
|
{"glVertexPointer", qfgl_VertexPointer},
|
|
{"glInterleavedArrays", qfgl_InterleavedArrays},
|
|
{"glArrayElement", qfgl_ArrayElement},
|
|
{"glDrawArrays", qfgl_DrawArrays},
|
|
{"glDrawElements", qfgl_DrawElements},
|
|
{"glDrawRangeElements", qfgl_DrawRangeElements},
|
|
{"glEnableClientState", qfgl_EnableClientState},
|
|
{"glDisableClientState", qfgl_DisableClientState},
|
|
{"glGetPointerv", qfgl_GetPointerv},
|
|
{"glPopClientAttrib", qfgl_PopClientAttrib},
|
|
{"glPushClientAttrib", qfgl_PushClientAttrib},
|
|
};
|