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177 lines
4.8 KiB
C
177 lines
4.8 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 7.2
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Keith Whitwell <keith@tungstengraphics.com>
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*/
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#include <precomp.h>
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GLboolean
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_tnl_CreateContext( struct gl_context *ctx )
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{
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TNLcontext *tnl;
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/* Create the TNLcontext structure
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*/
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ctx->swtnl_context = tnl = (TNLcontext *) CALLOC( sizeof(TNLcontext) );
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if (!tnl) {
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return GL_FALSE;
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}
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/* Initialize the VB.
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*/
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tnl->vb.Size = ctx->Const.MaxArrayLockSize + MAX_CLIPPED_VERTICES;
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/* Initialize tnl state.
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*/
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_tnl_install_pipeline( ctx, _tnl_default_pipeline );
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tnl->NeedNdcCoords = GL_TRUE;
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tnl->AllowVertexFog = GL_TRUE;
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tnl->AllowPixelFog = GL_TRUE;
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/* Set a few default values in the driver struct.
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*/
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tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
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tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
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tnl->Driver.NotifyMaterialChange = _mesa_validate_all_lighting_tables;
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tnl->nr_blocks = 0;
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/* plug in the VBO drawing function */
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vbo_set_draw_func(ctx, _tnl_vbo_draw_prims);
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_math_init_transformation();
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_math_init_translate();
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return GL_TRUE;
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}
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void
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_tnl_DestroyContext( struct gl_context *ctx )
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{
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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_tnl_destroy_pipeline( ctx );
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FREE(tnl);
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ctx->swtnl_context = NULL;
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}
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void
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_tnl_InvalidateState( struct gl_context *ctx, GLuint new_state )
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{
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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if (new_state & _NEW_HINT) {
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ASSERT(tnl->AllowVertexFog || tnl->AllowPixelFog);
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tnl->_DoVertexFog = ((tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST))
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|| !tnl->AllowPixelFog);
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}
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tnl->pipeline.new_state |= new_state;
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/* Calculate tnl->render_inputs. This bitmask indicates which vertex
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* attributes need to be emitted to the rasterizer.
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*/
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tnl->render_inputs_bitset = BITFIELD64_BIT(_TNL_ATTRIB_POS);
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tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_COLOR);
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if (ctx->Texture._EnabledCoord) {
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tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_TEX);
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}
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if (ctx->Fog.Enabled) {
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/* Either fixed-function fog or a fragment program needs fog coord.
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*/
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tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_FOG);
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}
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if (ctx->Polygon.FrontMode != GL_FILL ||
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ctx->Polygon.BackMode != GL_FILL)
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tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_EDGEFLAG);
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if (ctx->RenderMode == GL_FEEDBACK)
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tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_TEX);
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if (ctx->Point._Attenuated)
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tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_POINTSIZE);
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}
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void
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_tnl_wakeup( struct gl_context *ctx )
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{
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/* Assume we haven't been getting state updates either:
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*/
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_tnl_InvalidateState( ctx, ~0 );
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#if 0
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if (ctx->Light.ColorMaterialEnabled) {
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_mesa_update_color_material( ctx,
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ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );
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}
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#endif
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}
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/**
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* Drivers call this function to tell the TCL module whether or not
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* it wants Normalized Device Coords (NDC) computed. I.e. whether
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* we should "Divide-by-W". Software renders will want that.
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*/
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void
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_tnl_need_projected_coords( struct gl_context *ctx, GLboolean mode )
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{
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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tnl->NeedNdcCoords = mode;
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}
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void
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_tnl_allow_vertex_fog( struct gl_context *ctx, GLboolean value )
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{
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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tnl->AllowVertexFog = value;
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tnl->_DoVertexFog = ((tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST))
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|| !tnl->AllowPixelFog);
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}
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void
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_tnl_allow_pixel_fog( struct gl_context *ctx, GLboolean value )
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{
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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tnl->AllowPixelFog = value;
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tnl->_DoVertexFog = ((tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST))
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|| !tnl->AllowPixelFog);
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}
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