api.c

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#include "zgl.h"
#include <stdio.h>
/* glVertex */
 
void glVertex4f(float x,float y,float z,float w)
{
  GLParam p[5];
 
  p[0].op=OP_Vertex;
  p[1].f=x;
  p[2].f=y;
  p[3].f=z;
  p[4].f=w;
 
  gl_add_op(p);
}
 
void glVertex2f(float x,float y) 
{
  glVertex4f(x,y,0,1);
}
 
void glVertex3f(float x,float y,float z) 
{
  glVertex4f(x,y,z,1);
}
 
void glVertex3fv(float *v) 
{
  glVertex4f(v[0],v[1],v[2],1);
}
 
/* glNormal */
 
void glNormal3f(float x,float y,float z)
{
  GLParam p[4];
 
  p[0].op=OP_Normal;
  p[1].f=x;
  p[2].f=y;
  p[3].f=z;
 
  gl_add_op(p);
}
 
void glNormal3fv(float *v) 
{
  glNormal3f(v[0],v[1],v[2]);
}
 
/* glColor */
 
void glColor4f(float r,float g,float b,float a)
{
  GLParam p[8];
 
  p[0].op=OP_Color;
  p[1].f=r;
  p[2].f=g;
  p[3].f=b;
  p[4].f=a;
  /* direct convertion to integer to go faster if no shading */
  p[5].ui = (unsigned int) (r * (ZB_POINT_RED_MAX - ZB_POINT_RED_MIN) + 
                            ZB_POINT_RED_MIN);
  p[6].ui = (unsigned int) (g * (ZB_POINT_GREEN_MAX - ZB_POINT_GREEN_MIN) + 
                            ZB_POINT_GREEN_MIN);
  p[7].ui = (unsigned int) (b * (ZB_POINT_BLUE_MAX - ZB_POINT_BLUE_MIN) + 
                            ZB_POINT_BLUE_MIN);
  gl_add_op(p);
}
 
void glColor4fv(float *v)
{
  GLParam p[8];
 
  p[0].op=OP_Color;
  p[1].f=v[0];
  p[2].f=v[1];
  p[3].f=v[2];
  p[4].f=v[3];
  /* direct convertion to integer to go faster if no shading */
  p[5].ui = (unsigned int) (v[0] * (ZB_POINT_RED_MAX - ZB_POINT_RED_MIN) + 
                            ZB_POINT_RED_MIN);
  p[6].ui = (unsigned int) (v[1] * (ZB_POINT_GREEN_MAX - ZB_POINT_GREEN_MIN) + 
                            ZB_POINT_GREEN_MIN);
  p[7].ui = (unsigned int) (v[2] * (ZB_POINT_BLUE_MAX - ZB_POINT_BLUE_MIN) + 
                            ZB_POINT_BLUE_MIN);
  gl_add_op(p);
}
 
void glColor3f(float x,float y,float z) 
{
  glColor4f(x,y,z,1);
}
 
void glColor3fv(float *v) 
{
  glColor4f(v[0],v[1],v[2],1);
}
 
 
/* TexCoord */
 
void glTexCoord4f(float s,float t,float r,float q)
{
  GLParam p[5];
 
  p[0].op=OP_TexCoord;
  p[1].f=s;
  p[2].f=t;
  p[3].f=r;
  p[4].f=q;
 
  gl_add_op(p);
}
 
void glTexCoord2f(float s,float t)
{
  glTexCoord4f(s,t,0,1);
}
 
void glTexCoord2fv(float *v)
{
  glTexCoord4f(v[0],v[1],0,1);
}
 
void glEdgeFlag(int flag)
{
  GLParam p[2];
 
  p[0].op=OP_EdgeFlag;
  p[1].i=flag;
 
  gl_add_op(p);
}
 
/* misc */
 
void glShadeModel(int mode)
{
  GLParam p[2];
 
  assert(mode == GL_FLAT || mode == GL_SMOOTH);
 
  p[0].op=OP_ShadeModel;
  p[1].i=mode;
 
  gl_add_op(p);
}
 
void glCullFace(int mode)
{
  GLParam p[2];
 
  assert(mode == GL_BACK || 
         mode == GL_FRONT || 
         mode == GL_FRONT_AND_BACK);
 
  p[0].op=OP_CullFace;
  p[1].i=mode;
 
  gl_add_op(p);
}
 
void glFrontFace(int mode)
{
  GLParam p[2];
 
  assert(mode == GL_CCW || mode == GL_CW);
 
  mode = (mode != GL_CCW);
 
  p[0].op=OP_FrontFace;
  p[1].i=mode;
 
  gl_add_op(p);
}
 
void glPolygonMode(int face,int mode)
{
  GLParam p[3];
 
  assert(face == GL_BACK || 
         face == GL_FRONT || 
         face == GL_FRONT_AND_BACK);
  assert(mode == GL_POINT || mode == GL_LINE || mode==GL_FILL);
 
  p[0].op=OP_PolygonMode;
  p[1].i=face;
  p[2].i=mode;
 
  gl_add_op(p);
}
 
 
/* glEnable / glDisable */
 
void glEnable(int cap)
{
  GLParam p[3];
 
  p[0].op=OP_EnableDisable;
  p[1].i=cap;
  p[2].i=1;
 
  gl_add_op(p);
}
 
void glDisable(int cap)
{
  GLParam p[3];
 
  p[0].op=OP_EnableDisable;
  p[1].i=cap;
  p[2].i=0;
 
  gl_add_op(p);
}
 
/* glBegin / glEnd */
 
void glBegin(int mode)
{
  GLParam p[2];
 
  p[0].op=OP_Begin;
  p[1].i=mode;
 
  gl_add_op(p);
}
 
void glEnd(void)
{
  GLParam p[1];
 
  p[0].op=OP_End;
 
  gl_add_op(p);
}
 
/* matrix */
 
void glMatrixMode(int mode)
{
  GLParam p[2];
 
  p[0].op=OP_MatrixMode;
  p[1].i=mode;
 
  gl_add_op(p);
}
 
void glLoadMatrixf(const float *m)
{
  GLParam p[17];
  int i;
 
  p[0].op=OP_LoadMatrix;
  for(i=0;i<16;i++) p[i+1].f=m[i];
 
  gl_add_op(p);
}
 
void glLoadIdentity(void)
{
  GLParam p[1];
 
  p[0].op=OP_LoadIdentity;
 
  gl_add_op(p);
}
 
void glMultMatrixf(const float *m)
{
  GLParam p[17];
  int i;
 
  p[0].op=OP_MultMatrix;
  for(i=0;i<16;i++) p[i+1].f=m[i];
 
  gl_add_op(p);
}
 
void glPushMatrix(void)
{
  GLParam p[1];
 
  p[0].op=OP_PushMatrix;
 
  gl_add_op(p);
}
 
void glPopMatrix(void)
{
  GLParam p[1];
 
  p[0].op=OP_PopMatrix;
 
  gl_add_op(p);
}
 
void glRotatef(float angle,float x,float y,float z)
{
  GLParam p[5];
 
  p[0].op=OP_Rotate;
  p[1].f=angle;
  p[2].f=x;
  p[3].f=y;
  p[4].f=z;
 
  gl_add_op(p);
}
 
void glTranslatef(float x,float y,float z)
{
  GLParam p[4];
 
  p[0].op=OP_Translate;
  p[1].f=x;
  p[2].f=y;
  p[3].f=z;
 
  gl_add_op(p);
}
 
void glScalef(float x,float y,float z)
{
  GLParam p[4];
 
  p[0].op=OP_Scale;
  p[1].f=x;
  p[2].f=y;
  p[3].f=z;
 
  gl_add_op(p);
}
 
 
void glViewport(int x,int y,int width,int height)
{
  GLParam p[5];
 
  p[0].op=OP_Viewport;
  p[1].i=x;
  p[2].i=y;
  p[3].i=width;
  p[4].i=height;
 
  gl_add_op(p);
}
 
void glFrustum(double left,double right,double bottom,double top,
               double near,double farv)
{
  GLParam p[7];
 
  p[0].op=OP_Frustum;
  p[1].f=left;
  p[2].f=right;
  p[3].f=bottom;
  p[4].f=top;
  p[5].f=near;
  p[6].f=farv;
 
  gl_add_op(p);
}
 
/* lightening */
 
void glMaterialfv(int mode,int type,float *v)
{
  GLParam p[7];
  int i,n;
 
  assert(mode == GL_FRONT  || mode == GL_BACK || mode==GL_FRONT_AND_BACK);
 
  p[0].op=OP_Material;
  p[1].i=mode;
  p[2].i=type;
  n=4;
  if (type == GL_SHININESS) n=1;
  for(i=0;i<4;i++) p[3+i].f=v[i];
  for(i=n;i<4;i++) p[3+i].f=0;
 
  gl_add_op(p);
}
 
void glMaterialf(int mode,int type,float v)
{
  GLParam p[7];
  int i;
 
  p[0].op=OP_Material;
  p[1].i=mode;
  p[2].i=type;
  p[3].f=v;
  for(i=0;i<3;i++) p[4+i].f=0;
 
  gl_add_op(p);
}
 
void glColorMaterial(int mode,int type)
{
  GLParam p[3];
 
  p[0].op=OP_ColorMaterial;
  p[1].i=mode;
  p[2].i=type;
 
  gl_add_op(p);
}
 
void glLightfv(int light,int type,float *v)
{
  GLParam p[7];
  int i;
 
  p[0].op=OP_Light;
  p[1].i=light;
  p[2].i=type;
  /* TODO: 3 composants ? */
  for(i=0;i<4;i++) p[3+i].f=v[i];
 
  gl_add_op(p);
}
 
 
void glLightf(int light,int type,float v)
{
  GLParam p[7];
  int i;
 
  p[0].op=OP_Light;
  p[1].i=light;
  p[2].i=type;
  p[3].f=v;
  for(i=0;i<3;i++) p[4+i].f=0;
 
  gl_add_op(p);
}
 
void glLightModeli(int pname,int param)
{
  GLParam p[6];
  int i;
 
  p[0].op=OP_LightModel;
  p[1].i=pname;
  p[2].f=(float)param;
  for(i=0;i<3;i++) p[3+i].f=0;
 
  gl_add_op(p);
}
 
void glLightModelfv(int pname,float *param)
{
  GLParam p[6];
  int i;
 
  p[0].op=OP_LightModel;
  p[1].i=pname;
  for(i=0;i<4;i++) p[2+i].f=param[i];
 
  gl_add_op(p);
}
 
/* clear */
 
void glClear(int mask)
{
  GLParam p[2];
 
  p[0].op=OP_Clear;
  p[1].i=mask;
 
  gl_add_op(p);
}
 
void glClearColor(float r,float g,float b,float a)
{
  GLParam p[5];
 
  p[0].op=OP_ClearColor;
  p[1].f=r;
  p[2].f=g;
  p[3].f=b;
  p[4].f=a;
 
  gl_add_op(p);
}
 
void glClearDepth(double depth)
{
  GLParam p[2];
 
  p[0].op=OP_ClearDepth;
  p[1].f=depth;
 
  gl_add_op(p);
}
 
 
/* textures */
 
void glTexImage2D( int target, int level, int components,
                   int width, int height, int border,
                   int format, int type, void *pixels)
{
  GLParam p[10];
 
  p[0].op=OP_TexImage2D;
  p[1].i=target;
  p[2].i=level;
  p[3].i=components;
  p[4].i=width;
  p[5].i=height;
  p[6].i=border;
  p[7].i=format;
  p[8].i=type;
  p[9].p=pixels;
 
  gl_add_op(p);
}
 
 
void glBindTexture(int target,int texture)
{
  GLParam p[3];
 
  p[0].op=OP_BindTexture;
  p[1].i=target;
  p[2].i=texture;
 
  gl_add_op(p);
}
 
void glTexEnvi(int target,int pname,int param)
{
  GLParam p[8];
  
  p[0].op=OP_TexEnv;
  p[1].i=target;
  p[2].i=pname;
  p[3].i=param;
  p[4].f=0;
  p[5].f=0;
  p[6].f=0;
  p[7].f=0;
 
  gl_add_op(p);
}
 
void glTexParameteri(int target,int pname,int param)
{
  GLParam p[8];
  
  p[0].op=OP_TexParameter;
  p[1].i=target;
  p[2].i=pname;
  p[3].i=param;
  p[4].f=0;
  p[5].f=0;
  p[6].f=0;
  p[7].f=0;
 
  gl_add_op(p);
}
 
void glPixelStorei(int pname,int param)
{
  GLParam p[3];
 
  p[0].op=OP_PixelStore;
  p[1].i=pname;
  p[2].i=param;
 
  gl_add_op(p);
}
 
/* selection */
 
void glInitNames(void)
{
  GLParam p[1];
 
  p[0].op=OP_InitNames;
 
  gl_add_op(p);
}
 
void glPushName(unsigned int name)
{
  GLParam p[2];
 
  p[0].op=OP_PushName;
  p[1].i=name;
 
  gl_add_op(p);
}
 
void glPopName(void)
{
  GLParam p[1];
 
  p[0].op=OP_PopName;
 
  gl_add_op(p);
}
 
void glLoadName(unsigned int name)
{
  GLParam p[2];
 
  p[0].op=OP_LoadName;
  p[1].i=name;
 
  gl_add_op(p);
}
 
void 
glPolygonOffset(GLfloat factor, GLfloat units)
{
  GLParam p[3];
  p[0].op = OP_PolygonOffset;
  p[1].f = factor;
  p[2].f = units;
 
  gl_add_op(p);
}
 
/* Special Functions */
 
void glCallList(unsigned int list)
{
  GLParam p[2];
 
  p[0].op=OP_CallList;
  p[1].i=list;
 
  gl_add_op(p);
}
 
void glFlush(void)
{
  /* nothing to do */
}
 
void glHint(int target,int mode)
{
  GLParam p[3];
 
  p[0].op=OP_Hint;
  p[1].i=target;
  p[2].i=mode;
 
  gl_add_op(p);
}
 
/* Non standard functions */
 
void glDebug(int mode)
{
  GLContext *c=gl_get_context();
  c->print_flag=mode;
}