vbo_exec_api.c

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

								\
      for (i = 0; i < exec->vtx.vertex_size; i++)		\
	 exec->vtx.vbptr[i] = exec->vtx.vertex[i];		\
								\
      exec->vtx.vbptr += exec->vtx.vertex_size;			\
      exec->ctx->Driver.NeedFlush |= FLUSH_STORED_VERTICES;	\
								\
      if (++exec->vtx.vert_count >= exec->vtx.max_vert)		\
	 vbo_exec_vtx_wrap( exec );				\
   }								\
} while (0)


#define ERROR() _mesa_error( ctx, GL_INVALID_ENUM, __FUNCTION__ )
#define TAG(x) vbo_##x

#include "vbo_attrib_tmp.h"





/* Eval
 */
static void GLAPIENTRY vbo_exec_EvalCoord1f( GLfloat u )
{
   GET_CURRENT_CONTEXT( ctx );
   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;

   {
      GLint i;
      if (exec->eval.recalculate_maps) 
	 vbo_exec_eval_update( exec );

      for (i = 0; i <= VBO_ATTRIB_TEX7; i++) {
	 if (exec->eval.map1[i].map) 
	    if (exec->vtx.active_sz[i] != exec->eval.map1[i].sz)
	       vbo_exec_fixup_vertex( ctx, i, exec->eval.map1[i].sz );
      }
   }


   _mesa_memcpy( exec->vtx.copied.buffer, exec->vtx.vertex, 
                 exec->vtx.vertex_size * sizeof(GLfloat));

   vbo_exec_do_EvalCoord1f( exec, u );

   _mesa_memcpy( exec->vtx.vertex, exec->vtx.copied.buffer,
                 exec->vtx.vertex_size * sizeof(GLfloat));
}

static void GLAPIENTRY vbo_exec_EvalCoord2f( GLfloat u, GLfloat v )
{
   GET_CURRENT_CONTEXT( ctx );
   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;

   {
      GLint i;
      if (exec->eval.recalculate_maps) 
	 vbo_exec_eval_update( exec );

      for (i = 0; i <= VBO_ATTRIB_TEX7; i++) {
	 if (exec->eval.map2[i].map) 
	    if (exec->vtx.active_sz[i] != exec->eval.map2[i].sz)
	       vbo_exec_fixup_vertex( ctx, i, exec->eval.map2[i].sz );
      }

      if (ctx->Eval.AutoNormal) 
	 if (exec->vtx.active_sz[VBO_ATTRIB_NORMAL] != 3)
	    vbo_exec_fixup_vertex( ctx, VBO_ATTRIB_NORMAL, 3 );
   }

   _mesa_memcpy( exec->vtx.copied.buffer, exec->vtx.vertex, 
                 exec->vtx.vertex_size * sizeof(GLfloat));

   vbo_exec_do_EvalCoord2f( exec, u, v );

   _mesa_memcpy( exec->vtx.vertex, exec->vtx.copied.buffer, 
                 exec->vtx.vertex_size * sizeof(GLfloat));
}

static void GLAPIENTRY vbo_exec_EvalCoord1fv( const GLfloat *u )
{
   vbo_exec_EvalCoord1f( u[0] );
}

static void GLAPIENTRY vbo_exec_EvalCoord2fv( const GLfloat *u )
{
   vbo_exec_EvalCoord2f( u[0], u[1] );
}

static void GLAPIENTRY vbo_exec_EvalPoint1( GLint i )
{
   GET_CURRENT_CONTEXT( ctx );
   GLfloat du = ((ctx->Eval.MapGrid1u2 - ctx->Eval.MapGrid1u1) /
		 (GLfloat) ctx->Eval.MapGrid1un);
   GLfloat u = i * du + ctx->Eval.MapGrid1u1;

   vbo_exec_EvalCoord1f( u );
}


static void GLAPIENTRY vbo_exec_EvalPoint2( GLint i, GLint j )
{
   GET_CURRENT_CONTEXT( ctx );
   GLfloat du = ((ctx->Eval.MapGrid2u2 - ctx->Eval.MapGrid2u1) / 
		 (GLfloat) ctx->Eval.MapGrid2un);
   GLfloat dv = ((ctx->Eval.MapGrid2v2 - ctx->Eval.MapGrid2v1) / 
		 (GLfloat) ctx->Eval.MapGrid2vn);
   GLfloat u = i * du + ctx->Eval.MapGrid2u1;
   GLfloat v = j * dv + ctx->Eval.MapGrid2v1;

   vbo_exec_EvalCoord2f( u, v );
}


/**
 * Check if programs/shaders are enabled and valid at glBegin time.
 */
GLboolean 
vbo_validate_shaders(GLcontext *ctx)
{
   if ((ctx->VertexProgram.Enabled && !ctx->VertexProgram._Enabled) ||
       (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled)) {
      return GL_FALSE;
   }
   if (ctx->Shader.CurrentProgram && !ctx->Shader.CurrentProgram->LinkStatus) {
      return GL_FALSE;
   }
   return GL_TRUE;
}


/* Build a list of primitives on the fly.  Keep
 * ctx->Driver.CurrentExecPrimitive uptodate as well.
 */
static void GLAPIENTRY vbo_exec_Begin( GLenum mode )
{
   GET_CURRENT_CONTEXT( ctx ); 

   if (ctx->Driver.CurrentExecPrimitive == GL_POLYGON+1) {
      struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
      int i;

      if (ctx->NewState) {
	 _mesa_update_state( ctx );

	 CALL_Begin(ctx->Exec, (mode));
	 return;
      }

      if (!vbo_validate_shaders(ctx)) {
         _mesa_error(ctx, GL_INVALID_OPERATION,
                     "glBegin (invalid vertex/fragment program)");
         return;
      }

      /* Heuristic: attempt to isolate attributes occuring outside
       * begin/end pairs.
       */
      if (exec->vtx.vertex_size && !exec->vtx.attrsz[0]) 
	 vbo_exec_FlushVertices( ctx, ~0 );

      i = exec->vtx.prim_count++;
      exec->vtx.prim[i].mode = mode;
      exec->vtx.prim[i].begin = 1;
      exec->vtx.prim[i].end = 0;
      exec->vtx.prim[i].indexed = 0;
      exec->vtx.prim[i].weak = 0;
      exec->vtx.prim[i].pad = 0;
      exec->vtx.prim[i].start = exec->vtx.vert_count;
      exec->vtx.prim[i].count = 0;

      ctx->Driver.CurrentExecPrimitive = mode;
   }
   else 
      _mesa_error( ctx, GL_INVALID_OPERATION, "glBegin" );
      
}

static void GLAPIENTRY vbo_exec_End( void )
{
   GET_CURRENT_CONTEXT( ctx ); 

   if (ctx->Driver.CurrentExecPrimitive != GL_POLYGON+1) {
      struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
      int idx = exec->vtx.vert_count;
      int i = exec->vtx.prim_count - 1;

      exec->vtx.prim[i].end = 1; 
      exec->vtx.prim[i].count = idx - exec->vtx.prim[i].start;

      ctx->Driver.CurrentExecPrimitive = GL_POLYGON+1;

      if (exec->vtx.prim_count == VBO_MAX_PRIM)
	 vbo_exec_vtx_flush( exec );	
   }
   else 
      _mesa_error( ctx, GL_INVALID_OPERATION, "glEnd" );
}


static void vbo_exec_vtxfmt_init( struct vbo_exec_context *exec )
{
   GLvertexformat *vfmt = &exec->vtxfmt;

   vfmt->ArrayElement = _ae_loopback_array_elt;	        /* generic helper */
   vfmt->Begin = vbo_exec_Begin;
   vfmt->CallList = _mesa_CallList;
   vfmt->CallLists = _mesa_CallLists;
   vfmt->End = vbo_exec_End;
   vfmt->EvalCoord1f = vbo_exec_EvalCoord1f;
   vfmt->EvalCoord1fv = vbo_exec_EvalCoord1fv;
   vfmt->EvalCoord2f = vbo_exec_EvalCoord2f;
   vfmt->EvalCoord2fv = vbo_exec_EvalCoord2fv;
   vfmt->EvalPoint1 = vbo_exec_EvalPoint1;
   vfmt->EvalPoint2 = vbo_exec_EvalPoint2;

   vfmt->Rectf = _mesa_noop_Rectf;
   vfmt->EvalMesh1 = _mesa_noop_EvalMesh1;
   vfmt->EvalMesh2 = _mesa_noop_EvalMesh2;


   /* from attrib_tmp.h:
    */
   vfmt->Color3f = vbo_Color3f;
   vfmt->Color3fv = vbo_Color3fv;
   vfmt->Color4f = vbo_Color4f;
   vfmt->Color4fv = vbo_Color4fv;
   vfmt->FogCoordfEXT = vbo_FogCoordfEXT;
   vfmt->FogCoordfvEXT = vbo_FogCoordfvEXT;
   vfmt->MultiTexCoord1fARB = vbo_MultiTexCoord1f;
   vfmt->MultiTexCoord1fvARB = vbo_MultiTexCoord1fv;
   vfmt->MultiTexCoord2fARB = vbo_MultiTexCoord2f;
   vfmt->MultiTexCoord2fvARB = vbo_MultiTexCoord2fv;
   vfmt->MultiTexCoord3fARB = vbo_MultiTexCoord3f;
   vfmt->MultiTexCoord3fvARB = vbo_MultiTexCoord3fv;
   vfmt->MultiTexCoord4fARB = vbo_MultiTexCoord4f;
   vfmt->MultiTexCoord4fvARB = vbo_MultiTexCoord4fv;
   vfmt->Normal3f = vbo_Normal3f;
   vfmt->Normal3fv = vbo_Normal3fv;
   vfmt->SecondaryColor3fEXT = vbo_SecondaryColor3fEXT;
   vfmt->SecondaryColor3fvEXT = vbo_SecondaryColor3fvEXT;
   vfmt->TexCoord1f = vbo_TexCoord1f;
   vfmt->TexCoord1fv = vbo_TexCoord1fv;
   vfmt->TexCoord2f = vbo_TexCoord2f;
   vfmt->TexCoord2fv = vbo_TexCoord2fv;
   vfmt->TexCoord3f = vbo_TexCoord3f;
   vfmt->TexCoord3fv = vbo_TexCoord3fv;
   vfmt->TexCoord4f = vbo_TexCoord4f;
   vfmt->TexCoord4fv = vbo_TexCoord4fv;
   vfmt->Vertex2f = vbo_Vertex2f;
   vfmt->Vertex2fv = vbo_Vertex2fv;
   vfmt->Vertex3f = vbo_Vertex3f;
   vfmt->Vertex3fv = vbo_Vertex3fv;
   vfmt->Vertex4f = vbo_Vertex4f;
   vfmt->Vertex4fv = vbo_Vertex4fv;
   
   vfmt->VertexAttrib1fARB = vbo_VertexAttrib1fARB;
   vfmt->VertexAttrib1fvARB = vbo_VertexAttrib1fvARB;
   vfmt->VertexAttrib2fARB = vbo_VertexAttrib2fARB;
   vfmt->VertexAttrib2fvARB = vbo_VertexAttrib2fvARB;
   vfmt->VertexAttrib3fARB = vbo_VertexAttrib3fARB;
   vfmt->VertexAttrib3fvARB = vbo_VertexAttrib3fvARB;
   vfmt->VertexAttrib4fARB = vbo_VertexAttrib4fARB;
   vfmt->VertexAttrib4fvARB = vbo_VertexAttrib4fvARB;

   vfmt->VertexAttrib1fNV = vbo_VertexAttrib1fNV;
   vfmt->VertexAttrib1fvNV = vbo_VertexAttrib1fvNV;
   vfmt->VertexAttrib2fNV = vbo_VertexAttrib2fNV;
   vfmt->VertexAttrib2fvNV = vbo_VertexAttrib2fvNV;
   vfmt->VertexAttrib3fNV = vbo_VertexAttrib3fNV;
   vfmt->VertexAttrib3fvNV = vbo_VertexAttrib3fvNV;
   vfmt->VertexAttrib4fNV = vbo_VertexAttrib4fNV;
   vfmt->VertexAttrib4fvNV = vbo_VertexAttrib4fvNV;

   vfmt->Materialfv = vbo_Materialfv;

   vfmt->EdgeFlag = vbo_EdgeFlag;
   vfmt->Indexf = vbo_Indexf;
   vfmt->Indexfv = vbo_Indexfv;

}


void vbo_exec_vtx_init( struct vbo_exec_context *exec )
{
   GLcontext *ctx = exec->ctx;
   struct vbo_context *vbo = vbo_context(ctx);
   GLuint i;

   /* Allocate a buffer object.  Will just reuse this object
    * continuously.
    */
   _mesa_reference_buffer_object(ctx,
                                 &exec->vtx.bufferobj,
                                 ctx->Array.NullBufferObj);

   exec->vtx.buffer_map = ALIGN_MALLOC(VBO_VERT_BUFFER_SIZE * sizeof(GLfloat), 64);

   vbo_exec_vtxfmt_init( exec );

   /* Hook our functions into the dispatch table.
    */
   _mesa_install_exec_vtxfmt( exec->ctx, &exec->vtxfmt );

   for (i = 0 ; i < VBO_ATTRIB_MAX ; i++) {
      exec->vtx.attrsz[i] = 0;
      exec->vtx.active_sz[i] = 0;
      exec->vtx.inputs[i] = &exec->vtx.arrays[i];
   }
   
   {
      struct gl_client_array *arrays = exec->vtx.arrays;
      memcpy(arrays,      vbo->legacy_currval,  16 * sizeof(arrays[0]));
      memcpy(arrays + 16, vbo->generic_currval, 16 * sizeof(arrays[0]));
   }

   exec->vtx.vertex_size = 0;
}


void vbo_exec_vtx_destroy( struct vbo_exec_context *exec )
{
   if (exec->vtx.buffer_map) {
      ALIGN_FREE(exec->vtx.buffer_map);
      exec->vtx.buffer_map = NULL;
   }
}


void vbo_exec_FlushVertices( GLcontext *ctx, GLuint flags )
{
   struct vbo_exec_context *exec = &vbo_context(ctx)->exec;

   if (exec->ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END)
      return;

   if (exec->vtx.vert_count) {
      vbo_exec_vtx_flush( exec );
   }

   if (exec->vtx.vertex_size) {
      vbo_exec_copy_to_current( exec );
      reset_attrfv( exec );
   }

   exec->ctx->Driver.NeedFlush = 0;
}


static void reset_attrfv( struct vbo_exec_context *exec )
{   
   GLuint i;

   for (i = 0 ; i < VBO_ATTRIB_MAX ; i++) {
      exec->vtx.attrsz[i] = 0;
      exec->vtx.active_sz[i] = 0;
   }

   exec->vtx.vertex_size = 0;
}