lines.h File Reference

#include "types.h"

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Functions
void	gl_LineWidth (GLcontext *ctx, GLfloat width)
void	gl_LineStipple (GLcontext *ctx, GLint factor, GLushort pattern)
void	gl_set_line_function (GLcontext *ctx)

Function Documentation

gl_LineStipple()

void gl_LineStipple	(	GLcontext *	ctx,
		GLint	factor,
		GLushort	pattern
	)

Definition at line 120 of file lines.c.

{
   if (INSIDE_BEGIN_END(ctx)) {
      gl_error( ctx, GL_INVALID_OPERATION, "glLineStipple" );
      return;
   }
   ctx->Line.StippleFactor = CLAMP( factor, 1, 256 );
   ctx->Line.StipplePattern = pattern;
   ctx->NewState |= NEW_RASTER_OPS;
}

Referenced by execute_list(), and init_exec_pointers().

gl_LineWidth()

void gl_LineWidth	(	GLcontext *	ctx,
		GLfloat	width
	)

Definition at line 104 of file lines.c.

{
   if (width<=0.0) {
      gl_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
      return;
   }
   if (INSIDE_BEGIN_END(ctx)) {
      gl_error( ctx, GL_INVALID_OPERATION, "glLineWidth" );
      return;
   }
   ctx->Line.Width = width;
   ctx->NewState |= NEW_RASTER_OPS;
}

Referenced by execute_list(), and init_exec_pointers().

gl_set_line_function()

void gl_set_line_function

(

GLcontext *

ctx

)

Definition at line 898 of file lines.c.

{
   GLboolean rgbmode = ctx->Visual->RGBAflag;
   /* TODO: antialiased lines */
 
   if (ctx->RenderMode==GL_RENDER) {
      if (ctx->NoRaster) {
         ctx->Driver.LineFunc = null_line;
         return;
      }
      if (ctx->Driver.LineFunc) {
         /* Device driver will draw lines. */
         ctx->Driver.LineFunc = ctx->Driver.LineFunc;
      }
      else if (ctx->Texture.Enabled) {
         if (ctx->Light.ShadeModel==GL_SMOOTH) {
            ctx->Driver.LineFunc = smooth_textured_line;
         }
         else {
            ctx->Driver.LineFunc = flat_textured_line;
         }
      }
      else if (ctx->Line.Width!=1.0 || ctx->Line.StippleFlag
               || ctx->Line.SmoothFlag || ctx->Texture.Enabled) {
         if (ctx->Light.ShadeModel==GL_SMOOTH) {
            if (rgbmode)
               ctx->Driver.LineFunc = general_smooth_rgba_line;
            else
               ctx->Driver.LineFunc = general_smooth_ci_line;
         }
         else {
            if (rgbmode)
               ctx->Driver.LineFunc = general_flat_rgba_line;
            else
               ctx->Driver.LineFunc = general_flat_ci_line;
         }
      }
      else {
     if (ctx->Light.ShadeModel==GL_SMOOTH) {
        /* Width==1, non-stippled, smooth-shaded */
            if (ctx->Depth.Test
            || (ctx->Fog.Enabled && ctx->Hint.Fog==GL_NICEST)) {
               if (rgbmode)
                  ctx->Driver.LineFunc = smooth_rgba_z_line;
               else
                  ctx->Driver.LineFunc = smooth_ci_z_line;
            }
            else {
               if (rgbmode)
                  ctx->Driver.LineFunc = smooth_rgba_line;
               else
                  ctx->Driver.LineFunc = smooth_ci_line;
            }
     }
         else {
        /* Width==1, non-stippled, flat-shaded */
            if (ctx->Depth.Test
                || (ctx->Fog.Enabled && ctx->Hint.Fog==GL_NICEST)) {
               if (rgbmode)
                  ctx->Driver.LineFunc = flat_rgba_z_line;
               else
                  ctx->Driver.LineFunc = flat_ci_z_line;
            }
            else {
               if (rgbmode)
                  ctx->Driver.LineFunc = flat_rgba_line;
               else
                  ctx->Driver.LineFunc = flat_ci_line;
            }
         }
      }
   }
   else if (ctx->RenderMode==GL_FEEDBACK) {
      ctx->Driver.LineFunc = feedback_line;
   }
   else {
      /* GL_SELECT mode */
      ctx->Driver.LineFunc = select_line;
   }
}

Referenced by gl_update_state().