fxtris.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

#define IND (FX_TWOSIDE_BIT|FX_OFFSET_BIT|FX_FALLBACK_BIT|FX_FLAT_BIT|FX_TWOSTENCIL_BIT)
#define TAG(x) x##_twoside_offset_fallback_flat_twostencil
#include "tnl_dd/t_dd_tritmp.h"

#define IND (FX_UNFILLED_BIT|FX_FALLBACK_BIT|FX_FLAT_BIT|FX_TWOSTENCIL_BIT)
#define TAG(x) x##_unfilled_fallback_flat_twostencil
#include "tnl_dd/t_dd_tritmp.h"

#define IND (FX_OFFSET_BIT|FX_UNFILLED_BIT|FX_FALLBACK_BIT|FX_FLAT_BIT|FX_TWOSTENCIL_BIT)
#define TAG(x) x##_offset_unfilled_fallback_flat_twostencil
#include "tnl_dd/t_dd_tritmp.h"

#define IND (FX_TWOSIDE_BIT|FX_UNFILLED_BIT|FX_FALLBACK_BIT|FX_FLAT_BIT|FX_TWOSTENCIL_BIT)
#define TAG(x) x##_twoside_unfilled_fallback_flat_twostencil
#include "tnl_dd/t_dd_tritmp.h"

#define IND (FX_TWOSIDE_BIT|FX_OFFSET_BIT|FX_UNFILLED_BIT| \
	     FX_FALLBACK_BIT|FX_FLAT_BIT|FX_TWOSTENCIL_BIT)
#define TAG(x) x##_twoside_offset_unfilled_fallback_flat_twostencil
#include "tnl_dd/t_dd_tritmp.h"
/* 2-sided stencil end */


static void init_rast_tab( void )
{
   init();
   init_offset();
   init_twoside();
   init_twoside_offset();
   init_unfilled();
   init_offset_unfilled();
   init_twoside_unfilled();
   init_twoside_offset_unfilled();
   init_fallback();
   init_offset_fallback();
   init_twoside_fallback();
   init_twoside_offset_fallback();
   init_unfilled_fallback();
   init_offset_unfilled_fallback();
   init_twoside_unfilled_fallback();
   init_twoside_offset_unfilled_fallback();

   init_flat();
   init_offset_flat();
   init_twoside_flat();
   init_twoside_offset_flat();
   init_unfilled_flat();
   init_offset_unfilled_flat();
   init_twoside_unfilled_flat();
   init_twoside_offset_unfilled_flat();
   init_fallback_flat();
   init_offset_fallback_flat();
   init_twoside_fallback_flat();
   init_twoside_offset_fallback_flat();
   init_unfilled_fallback_flat();
   init_offset_unfilled_fallback_flat();
   init_twoside_unfilled_fallback_flat();
   init_twoside_offset_unfilled_fallback_flat();

   /* 2-sided stencil begin */
   init_twostencil();
   init_offset_twostencil();
   init_twoside_twostencil();
   init_twoside_offset_twostencil();
   init_unfilled_twostencil();
   init_offset_unfilled_twostencil();
   init_twoside_unfilled_twostencil();
   init_twoside_offset_unfilled_twostencil();
   init_fallback_twostencil();
   init_offset_fallback_twostencil();
   init_twoside_fallback_twostencil();
   init_twoside_offset_fallback_twostencil();
   init_unfilled_fallback_twostencil();
   init_offset_unfilled_fallback_twostencil();
   init_twoside_unfilled_fallback_twostencil();
   init_twoside_offset_unfilled_fallback_twostencil();

   init_flat_twostencil();
   init_offset_flat_twostencil();
   init_twoside_flat_twostencil();
   init_twoside_offset_flat_twostencil();
   init_unfilled_flat_twostencil();
   init_offset_unfilled_flat_twostencil();
   init_twoside_unfilled_flat_twostencil();
   init_twoside_offset_unfilled_flat_twostencil();
   init_fallback_flat_twostencil();
   init_offset_fallback_flat_twostencil();
   init_twoside_fallback_flat_twostencil();
   init_twoside_offset_fallback_flat_twostencil();
   init_unfilled_fallback_flat_twostencil();
   init_offset_unfilled_fallback_flat_twostencil();
   init_twoside_unfilled_fallback_flat_twostencil();
   init_twoside_offset_unfilled_fallback_flat_twostencil();
   /* 2-sided stencil end */
}


/**********************************************************************/
/*                 Render whole begin/end objects                     */
/**********************************************************************/


/* Accelerate vertex buffer rendering when renderindex == 0 and
 * there is no clipping.
 */
#define INIT(x) fxRenderPrimitive( ctx, x )

static void fx_render_vb_points( GLcontext *ctx,
				 GLuint start,
				 GLuint count,
				 GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   GLint i;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_points\n");
   }

   INIT(GL_POINTS);

   /* Adjust point coords */
   for (i = start; i < count; i++) {
      fxVB[i].x += PNT_X_OFFSET - TRI_X_OFFSET;
      fxVB[i].y += PNT_Y_OFFSET - TRI_Y_OFFSET;
   }

   grDrawVertexArrayContiguous( GR_POINTS, count-start,
                                fxVB + start, sizeof(GrVertex));
   /* restore point coords */
   for (i = start; i < count; i++) {
      fxVB[i].x -= PNT_X_OFFSET - TRI_X_OFFSET;
      fxVB[i].y -= PNT_Y_OFFSET - TRI_Y_OFFSET;
   }
}

static void fx_render_vb_line_strip( GLcontext *ctx,
				     GLuint start,
				     GLuint count,
				     GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   GLint i;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_line_strip\n");
   }

   INIT(GL_LINE_STRIP);

   /* adjust line coords */
   for (i = start; i < count; i++) {
      fxVB[i].x += LINE_X_OFFSET - TRI_X_OFFSET;
      fxVB[i].y += LINE_Y_OFFSET - TRI_Y_OFFSET;
   }

   grDrawVertexArrayContiguous( GR_LINE_STRIP, count-start,
                                fxVB + start, sizeof(GrVertex));

   /* restore line coords */
   for (i = start; i < count; i++) {
      fxVB[i].x -= LINE_X_OFFSET - TRI_X_OFFSET;
      fxVB[i].y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
   }
}

static void fx_render_vb_line_loop( GLcontext *ctx,
				    GLuint start,
				    GLuint count,
				    GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   GLint i;
   GLint j = start;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_line_loop\n");
   }

   INIT(GL_LINE_LOOP);

   if (!(flags & PRIM_BEGIN)) {
      j++;
   }

   /* adjust line coords */
   for (i = start; i < count; i++) {
      fxVB[i].x += LINE_X_OFFSET - TRI_X_OFFSET;
      fxVB[i].y += LINE_Y_OFFSET - TRI_Y_OFFSET;
   }

   grDrawVertexArrayContiguous( GR_LINE_STRIP, count-j,
                                fxVB + j, sizeof(GrVertex));

   if (flags & PRIM_END)
      grDrawLine( fxVB + (count - 1),
                  fxVB + start );

   /* restore line coords */
   for (i = start; i < count; i++) {
      fxVB[i].x -= LINE_X_OFFSET - TRI_X_OFFSET;
      fxVB[i].y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
   }
}

static void fx_render_vb_lines( GLcontext *ctx,
				GLuint start,
				GLuint count,
				GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   GLint i;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_lines\n");
   }

   INIT(GL_LINES);

   /* adjust line coords */
   for (i = start; i < count; i++) {
      fxVB[i].x += LINE_X_OFFSET - TRI_X_OFFSET;
      fxVB[i].y += LINE_Y_OFFSET - TRI_Y_OFFSET;
   }

   grDrawVertexArrayContiguous( GR_LINES, count-start,
                                fxVB + start, sizeof(GrVertex));

   /* restore line coords */
   for (i = start; i < count; i++) {
      fxVB[i].x -= LINE_X_OFFSET - TRI_X_OFFSET;
      fxVB[i].y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
   }
}

static void fx_render_vb_triangles( GLcontext *ctx,
				    GLuint start,
				    GLuint count,
				    GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   GLuint j;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_triangles\n");
   }

   INIT(GL_TRIANGLES);

   for (j=start+2; j<count; j+=3) {
      grDrawTriangle(fxVB + (j-2), fxVB + (j-1), fxVB + j);
   }
}


static void fx_render_vb_tri_strip( GLcontext *ctx,
				    GLuint start,
				    GLuint count,
				    GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_tri_strip\n");
   }

   INIT(GL_TRIANGLE_STRIP);

   /* no GR_TRIANGLE_STRIP_CONTINUE?!? */

   grDrawVertexArrayContiguous( GR_TRIANGLE_STRIP, count-start,
                                fxVB + start, sizeof(GrVertex));
}


static void fx_render_vb_tri_fan( GLcontext *ctx,
				  GLuint start,
				  GLuint count,
				  GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_tri_fan\n");
   }

   INIT(GL_TRIANGLE_FAN);

   grDrawVertexArrayContiguous( GR_TRIANGLE_FAN, count-start,
                                fxVB + start, sizeof(GrVertex) );
}

static void fx_render_vb_quads( GLcontext *ctx,
				GLuint start,
				GLuint count,
				GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   GLuint i;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_quads\n");
   }

   INIT(GL_QUADS);

   for (i = start + 3 ; i < count ; i += 4 ) {
#define VERT(x) (fxVB + (x))
      GrVertex *_v_[4];
      _v_[0] = VERT(i);
      _v_[1] = VERT(i-3);
      _v_[2] = VERT(i-2);
      _v_[3] = VERT(i-1);
      grDrawVertexArray(GR_TRIANGLE_FAN, 4, _v_);
      /*grDrawTriangle( VERT(i-3), VERT(i-2), VERT(i) );*/
      /*grDrawTriangle( VERT(i-2), VERT(i-1), VERT(i) );*/
#undef VERT
   }
}

static void fx_render_vb_quad_strip( GLcontext *ctx,
				     GLuint start,
				     GLuint count,
				     GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_quad_strip\n");
   }

   INIT(GL_QUAD_STRIP);

   count -= (count-start)&1;

   grDrawVertexArrayContiguous( GR_TRIANGLE_STRIP,
                                count-start, fxVB + start, sizeof(GrVertex));
}

static void fx_render_vb_poly( GLcontext *ctx,
				GLuint start,
				GLuint count,
				GLuint flags )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrVertex *fxVB = fxMesa->verts;
   (void) flags;

   if (TDFX_DEBUG & VERBOSE_VARRAY) {
      fprintf(stderr, "fx_render_vb_poly\n");
   }

   INIT(GL_POLYGON);

   grDrawVertexArrayContiguous( GR_POLYGON, count-start,
                                fxVB + start, sizeof(GrVertex));
}

static void fx_render_vb_noop( GLcontext *ctx,
				 GLuint start,
				 GLuint count,
				 GLuint flags )
{
   (void) (ctx && start && count && flags);
}

static void (*fx_render_tab_verts[GL_POLYGON+2])(GLcontext *,
						   GLuint,
						   GLuint,
						   GLuint) =
{
   fx_render_vb_points,
   fx_render_vb_lines,
   fx_render_vb_line_loop,
   fx_render_vb_line_strip,
   fx_render_vb_triangles,
   fx_render_vb_tri_strip,
   fx_render_vb_tri_fan,
   fx_render_vb_quads,
   fx_render_vb_quad_strip,
   fx_render_vb_poly,
   fx_render_vb_noop,
};
#undef INIT


/**********************************************************************/
/*            Render whole (indexed) begin/end objects                */
/**********************************************************************/


#define VERT(x) (vertptr + x)

#define RENDER_POINTS( start, count )		\
   for ( ; start < count ; start++)		\
      grDrawPoint( VERT(ELT(start)) );

#define RENDER_LINE( v0, v1 ) \
   grDrawLine( VERT(v0), VERT(v1) )

#define RENDER_TRI( v0, v1, v2 )  \
   grDrawTriangle( VERT(v0), VERT(v1), VERT(v2) )

#define RENDER_QUAD( v0, v1, v2, v3 ) \
   do {	\
      GrVertex *_v_[4];	\
      _v_[0] = VERT(v3);\
      _v_[1] = VERT(v0);\
      _v_[2] = VERT(v1);\
      _v_[3] = VERT(v2);\
      grDrawVertexArray(GR_TRIANGLE_FAN, 4, _v_);\
      /*grDrawTriangle( VERT(v0), VERT(v1), VERT(v3) );*/\
      /*grDrawTriangle( VERT(v1), VERT(v2), VERT(v3) );*/\
   } while (0)

#define INIT(x) fxRenderPrimitive( ctx, x )

#undef LOCAL_VARS
#define LOCAL_VARS						\
    fxMesaContext fxMesa = FX_CONTEXT(ctx);			\
    GrVertex *vertptr = fxMesa->verts;		\
    const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;	\
    (void) elt;

#define RESET_STIPPLE
#define RESET_OCCLUSION
#define PRESERVE_VB_DEFS

/* Elts, no clipping.
 */
#undef ELT
#undef TAG
#define TAG(x) fx_##x##_elts
#define ELT(x) elt[x]
#include "tnl_dd/t_dd_rendertmp.h"

/* Verts, no clipping.
 */
#undef ELT
#undef TAG