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/*
* Mesa 3-D graphics library
* Version: 7.2
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "main/glheader.h"
#include "main/imports.h"
#include "main/context.h"
#include "main/macros.h"
#include "main/mtypes.h"
#include "main/light.h"
#include "math/m_translate.h"
#include "math/m_xform.h"
#include "main/state.h"
#include "tnl.h"
#include "t_context.h"
#include "t_pipeline.h"
#include "vbo/vbo.h"
GLboolean
_tnl_CreateContext( struct gl_context *ctx )
{
TNLcontext *tnl;
GLuint i;
/* Create the TNLcontext structure
*/
ctx->swtnl_context = tnl = (TNLcontext *) calloc(1, sizeof(TNLcontext));
if (!tnl) {
return GL_FALSE;
}
/* Initialize the VB.
*/
tnl->vb.Size = ctx->Const.MaxArrayLockSize + MAX_CLIPPED_VERTICES;
/* Initialize tnl state.
*/
if (ctx->VertexProgram._MaintainTnlProgram) {
_tnl_install_pipeline( ctx, _tnl_vp_pipeline );
} else {
_tnl_install_pipeline( ctx, _tnl_default_pipeline );
}
tnl->NeedNdcCoords = GL_TRUE;
tnl->AllowVertexFog = GL_TRUE;
tnl->AllowPixelFog = GL_TRUE;
/* Set a few default values in the driver struct.
*/
tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
tnl->Driver.NotifyMaterialChange = _tnl_validate_shine_tables;
tnl->nr_blocks = 0;
/* Lighting miscellaneous */
tnl->_ShineTabList = MALLOC_STRUCT( tnl_shine_tab );
make_empty_list( tnl->_ShineTabList );
/* Allocate 10 (arbitrary) shininess lookup tables */
for (i = 0 ; i < 10 ; i++) {
struct tnl_shine_tab *s = MALLOC_STRUCT( tnl_shine_tab );
s->shininess = -1;
s->refcount = 0;
insert_at_tail( tnl->_ShineTabList, s );
}
/* plug in the VBO drawing function */
vbo_set_draw_func(ctx, _tnl_vbo_draw_prims);
_math_init_transformation();
_math_init_translate();
return GL_TRUE;
}
void
_tnl_DestroyContext( struct gl_context *ctx )
{
struct tnl_shine_tab *s, *tmps;
TNLcontext *tnl = TNL_CONTEXT(ctx);
/* Free lighting shininess exponentiation table */
foreach_s( s, tmps, tnl->_ShineTabList ) {
free( s );
}
free( tnl->_ShineTabList );
_tnl_destroy_pipeline( ctx );
free(tnl);
ctx->swtnl_context = NULL;
}
void
_tnl_InvalidateState( struct gl_context *ctx, GLuint new_state )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
const struct gl_vertex_program *vp = ctx->VertexProgram._Current;
const struct gl_fragment_program *fp = ctx->FragmentProgram._Current;
GLuint i;
if (new_state & (_NEW_HINT | _NEW_PROGRAM)) {
ASSERT(tnl->AllowVertexFog || tnl->AllowPixelFog);
tnl->_DoVertexFog = ((tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST))
|| !tnl->AllowPixelFog) && !fp;
}
tnl->pipeline.new_state |= new_state;
/* Calculate tnl->render_inputs. This bitmask indicates which vertex
* attributes need to be emitted to the rasterizer.
*/
tnl->render_inputs_bitset = BITFIELD64_BIT(_TNL_ATTRIB_POS);
if (!fp || (fp->Base.InputsRead & FRAG_BIT_COL0)) {
tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_COLOR0);
}
if (_mesa_need_secondary_color(ctx))
tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_COLOR1);
for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) {
if (ctx->Texture._EnabledCoordUnits & (1 << i) ||
(fp && fp->Base.InputsRead & FRAG_BIT_TEX(i))) {
tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_TEX(i));
}
}
if (ctx->Fog.Enabled
|| (fp != NULL && (fp->Base.InputsRead & FRAG_BIT_FOGC) != 0)) {
/* Either fixed-function fog or a fragment program needs fog coord.
*/
tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_FOG);
}
if (ctx->Polygon.FrontMode != GL_FILL ||
ctx->Polygon.BackMode != GL_FILL)
tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_EDGEFLAG);
if (ctx->RenderMode == GL_FEEDBACK)
tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_TEX0);
if (ctx->Point._Attenuated || ctx->VertexProgram.PointSizeEnabled)
tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_POINTSIZE);
/* check for varying vars which are written by the vertex program */
if (vp) {
GLuint i;
for (i = 0; i < MAX_VARYING; i++) {
if (vp->Base.OutputsWritten & BITFIELD64_BIT(VERT_RESULT_VAR0 + i)) {
tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_GENERIC(i));
}
}
}
}
void
_tnl_wakeup( struct gl_context *ctx )
{
/* Assume we haven't been getting state updates either:
*/
_tnl_InvalidateState( ctx, ~0 );
#if 0
if (ctx->Light.ColorMaterialEnabled) {
_mesa_update_color_material( ctx,
ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );
}
#endif
}
/**
* Drivers call this function to tell the TCL module whether or not
* it wants Normalized Device Coords (NDC) computed. I.e. whether
* we should "Divide-by-W". Software renders will want that.
*/
void
_tnl_need_projected_coords( struct gl_context *ctx, GLboolean mode )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
tnl->NeedNdcCoords = mode;
}
void
_tnl_allow_vertex_fog( struct gl_context *ctx, GLboolean value )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
tnl->AllowVertexFog = value;
tnl->_DoVertexFog = ((tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST))
|| !tnl->AllowPixelFog) && !ctx->FragmentProgram._Current;
}
void
_tnl_allow_pixel_fog( struct gl_context *ctx, GLboolean value )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
tnl->AllowPixelFog = value;
tnl->_DoVertexFog = ((tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST))
|| !tnl->AllowPixelFog) && !ctx->FragmentProgram._Current;
}
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