vbxform.h File Reference

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Functions
void	gl_transform_vb_part1 (GLcontext *ctx, GLboolean alldone)
void	gl_transform_vb_part2 (GLcontext *ctx, GLboolean alldone)

Function Documentation

gl_transform_vb_part1()

void gl_transform_vb_part1	(	GLcontext *	ctx,
		GLboolean	alldone
	)

Definition at line 1120 of file vbxform.c.

{
   struct vertex_buffer *VB = ctx->VB;
#ifdef PROFILE
   GLdouble t0 = gl_time();
#endif
 
   ASSERT( VB->Count>0 );
 
   /* Apply the modelview matrix to transform vertexes from Object
    * to Eye coords.
    */
   if (VB->VertexSizeMask==VERTEX4_BIT) {
      transform_points4( ctx, VB->Count - VB->Start,
                         VB->Obj + VB->Start, VB->Eye + VB->Start );
   }
   else {
      transform_points3( ctx, VB->Count - VB->Start,
                         VB->Obj + VB->Start, VB->Eye + VB->Start );
   }
 
   /* Now transform the normal vectors */
   if (ctx->NeedNormals) {
      gl_xform_normals_3fv( VB->Count - VB->Start,
                            VB->Normal + VB->Start, ctx->ModelViewInv,
                            VB->Normal + VB->Start, ctx->Transform.Normalize );
   }
 
#ifdef PROFILE
   ctx->VertexTime += gl_time() - t0;
#endif
 
   /* lighting, project, etc */
   gl_transform_vb_part2( ctx, allDone );
}

Referenced by gl_ArrayElement(), gl_End(), gl_eval_vertex(), vertex2f_color(), vertex2f_color_tex2(), vertex2f_color_tex4(), vertex2f_index(), vertex2f_normal(), vertex2f_normal_color_tex2(), vertex2f_normal_color_tex4(), vertex3f_color(), vertex3f_color_tex2(), vertex3f_color_tex4(), vertex3f_index(), vertex3f_normal(), vertex3f_normal_color_tex2(), vertex3f_normal_color_tex4(), vertex3fv_color(), vertex3fv_color_tex2(), vertex3fv_color_tex4(), vertex3fv_index(), vertex3fv_normal(), vertex3fv_normal_color_tex2(), vertex3fv_normal_color_tex4(), vertex4(), and vertex4f_feedback().

gl_transform_vb_part2()

void gl_transform_vb_part2	(	GLcontext *	ctx,
		GLboolean	alldone
	)

Definition at line 1165 of file vbxform.c.

{
   struct vertex_buffer *VB = ctx->VB;
#ifdef PROFILE
   GLdouble t0 = gl_time();
#endif
 
   ASSERT( VB->Count>0 );
 
   /* Test vertices in eye coordinate space against user clipping planes */
   if (ctx->Transform.AnyClip) {
      GLuint result = userclip_vertices( ctx, VB->Count - VB->Start,
                                         VB->Eye + VB->Start,
                                         VB->ClipMask + VB->Start );
      if (result==CLIP_ALL) {
         /* All vertices were outside one of the clip planes! */
         VB->ClipOrMask = CLIP_ALL_BITS; /* force reset of clipping flags */
         gl_reset_vb( ctx, allDone );
         return;
      }
      else if (result==CLIP_SOME) {
         VB->ClipOrMask = CLIP_USER_BIT;
      }
      else {
         VB->ClipAndMask = 0;
      }
   }
 
   /* Apply the projection matrix to the Eye coordinates, resulting in
    * Clip coordinates.  Also, compute the ClipMask for each vertex.
    */
   project_and_cliptest( ctx, VB->Count - VB->Start, VB->Eye + VB->Start,
                         VB->Clip + VB->Start, VB->ClipMask + VB->Start,
                         &VB->ClipOrMask, &VB->ClipAndMask );
 
   if (VB->ClipAndMask) {
      /* All vertices clipped by one plane, all done! */
      /*assert(VB->ClipOrMask);*/
      VB->ClipOrMask = CLIP_ALL_BITS; /* force reset of clipping flags */
      gl_reset_vb( ctx, allDone );
      return;
   }
 
   /* Lighting */
   if (ctx->Light.Enabled) {
      shade_vertices(ctx);
   }
 
   /* Per-vertex fog */
   if (ctx->Fog.Enabled && ctx->Hint.Fog!=GL_NICEST) {
      fog_vertices(ctx);
   }
 
   /* Generate/transform texture coords */
   if (ctx->Texture.Enabled || ctx->RenderMode==GL_FEEDBACK) {
      if (ctx->Texture.TexGenEnabled) {
         gl_texgen( ctx, VB->Count - VB->Start,
                    VB->Obj + VB->Start,
                    VB->Eye + VB->Start,
                    VB->Normal + VB->Start,
                    VB->TexCoord + VB->Start );
      }
      if (ctx->NewTextureMatrix) {
         gl_analyze_texture_matrix(ctx);
      }
      if (ctx->TextureMatrixType!=MATRIX_IDENTITY) {
         transform_texcoords( ctx, VB->Count - VB->Start,
                              VB->TexCoord + VB->Start );
      }
   }
 
   /* Use the viewport parameters to transform vertices from Clip
    * coordinates to Window coordinates.
    */
   viewport_map_vertices( ctx, VB->Count - VB->Start, VB->Clip + VB->Start,
                          VB->ClipOrMask ? VB->ClipMask + VB->Start : NULL,
                          VB->Win + VB->Start );
 
   /* Device driver rasterization setup.  3Dfx driver, for example. */
   if (ctx->Driver.RasterSetup) {
      (*ctx->Driver.RasterSetup)( ctx, 0, VB->Count );
   }
 
 
#ifdef PROFILE
   ctx->VertexTime += gl_time() - t0;
   ctx->VertexCount += VB->Count - VB->Start;
#endif
 
   /*
    * Now we're ready to rasterize the Vertex Buffer!!!
    *
    * If the device driver can't rasterize the vertex buffer then we'll
    * do it ourselves.
    */
   if (!ctx->Driver.RenderVB || !(*ctx->Driver.RenderVB)(ctx,allDone)) {
      gl_render_vb( ctx, allDone );
   }
}

Referenced by gl_DrawArrays(), and gl_transform_vb_part1().