150 lines
3 KiB
C
150 lines
3 KiB
C
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#include "zgl.h"
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#include "msghandling.h"
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void glopViewport(GLContext *c,GLParam *p)
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{
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int xsize,ysize,xmin,ymin,xsize_req,ysize_req;
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xmin=p[1].i;
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ymin=p[2].i;
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xsize=p[3].i;
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ysize=p[4].i;
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/* we may need to resize the zbuffer */
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if (c->viewport.xmin != xmin ||
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c->viewport.ymin != ymin ||
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c->viewport.xsize != xsize ||
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c->viewport.ysize != ysize) {
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xsize_req=xmin+xsize;
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ysize_req=ymin+ysize;
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if (c->gl_resize_viewport &&
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c->gl_resize_viewport(c,&xsize_req,&ysize_req) != 0) {
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gl_fatal_error("glViewport: error while resizing display");
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}
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xsize=xsize_req-xmin;
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ysize=ysize_req-ymin;
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if (xsize <= 0 || ysize <= 0) {
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gl_fatal_error("glViewport: size too small");
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}
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tgl_trace("glViewport: %d %d %d %d\n",
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xmin, ymin, xsize, ysize);
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c->viewport.xmin=xmin;
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c->viewport.ymin=ymin;
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c->viewport.xsize=xsize;
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c->viewport.ysize=ysize;
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c->viewport.updated=1;
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}
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}
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void glopEnableDisable(GLContext *c,GLParam *p)
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{
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int code=p[1].i;
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int v=p[2].i;
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switch(code) {
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case GL_CULL_FACE:
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c->cull_face_enabled=v;
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break;
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case GL_LIGHTING:
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c->lighting_enabled=v;
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break;
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case GL_COLOR_MATERIAL:
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c->color_material_enabled=v;
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break;
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case GL_TEXTURE_2D:
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c->texture_2d_enabled=v;
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break;
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case GL_NORMALIZE:
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c->normalize_enabled=v;
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break;
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case GL_DEPTH_TEST:
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c->depth_test = v;
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break;
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case GL_POLYGON_OFFSET_FILL:
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if (v) c->offset_states |= TGL_OFFSET_FILL;
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else c->offset_states &= ~TGL_OFFSET_FILL;
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break;
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case GL_POLYGON_OFFSET_POINT:
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if (v) c->offset_states |= TGL_OFFSET_POINT;
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else c->offset_states &= ~TGL_OFFSET_POINT;
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break;
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case GL_POLYGON_OFFSET_LINE:
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if (v) c->offset_states |= TGL_OFFSET_LINE;
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else c->offset_states &= ~TGL_OFFSET_LINE;
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break;
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default:
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if (code>=GL_LIGHT0 && code<GL_LIGHT0+MAX_LIGHTS) {
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gl_enable_disable_light(c,code - GL_LIGHT0, v);
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} else {
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/*
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fprintf(stderr,"glEnableDisable: 0x%X not supported.\n",code);
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*/
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}
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break;
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}
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}
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void glopShadeModel(GLContext *c,GLParam *p)
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{
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int code=p[1].i;
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c->current_shade_model=code;
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}
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void glopCullFace(GLContext *c,GLParam *p)
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{
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int code=p[1].i;
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c->current_cull_face=code;
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}
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void glopFrontFace(GLContext *c,GLParam *p)
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{
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int code=p[1].i;
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c->current_front_face=code;
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}
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void glopPolygonMode(GLContext *c,GLParam *p)
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{
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int face=p[1].i;
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int mode=p[2].i;
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switch(face) {
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case GL_BACK:
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c->polygon_mode_back=mode;
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break;
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case GL_FRONT:
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c->polygon_mode_front=mode;
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break;
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case GL_FRONT_AND_BACK:
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c->polygon_mode_front=mode;
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c->polygon_mode_back=mode;
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break;
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default:
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gl_assert(0);
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}
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}
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void glopHint(GLContext *c,GLParam *p)
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{
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(void)c;
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(void)p;
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#if 0
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int target=p[1].i;
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int mode=p[2].i;
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/* do nothing */
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#endif
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}
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void
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glopPolygonOffset(GLContext *c, GLParam *p)
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{
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c->offset_factor = p[1].f;
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c->offset_units = p[2].f;
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}
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