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230 lines
6.4 KiB
C
230 lines
6.4 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 7.1
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*
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* Copyright (C) 1999-2007 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 "main/glheader.h"
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#include "main/imports.h"
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#include "main/colormac.h"
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#include "tnl/tnl.h"
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#include "tnl/t_context.h"
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#include "tnl/t_pipeline.h"
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#include "tnl/t_vertex.h"
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#include "swrast_setup.h"
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#include "ss_context.h"
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#include "ss_triangle.h"
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/* Need to check lighting state and vertex program state to know
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* if two-sided lighting is in effect.
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*/
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#define _SWSETUP_NEW_RENDERINDEX (_NEW_POLYGON|_NEW_LIGHT)
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#define VARYING_EMIT_STYLE EMIT_4F
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GLboolean
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_swsetup_CreateContext( struct gl_context *ctx )
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{
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SScontext *swsetup = (SScontext *)CALLOC(sizeof(SScontext));
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if (!swsetup)
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return GL_FALSE;
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ctx->swsetup_context = swsetup;
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swsetup->NewState = ~0;
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_swsetup_trifuncs_init( ctx );
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_tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12,
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sizeof(SWvertex) );
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return GL_TRUE;
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}
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void
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_swsetup_DestroyContext( struct gl_context *ctx )
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{
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SScontext *swsetup = SWSETUP_CONTEXT(ctx);
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if (swsetup) {
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FREE(swsetup);
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ctx->swsetup_context = 0;
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}
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_tnl_free_vertices( ctx );
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}
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static void
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_swsetup_RenderPrimitive( struct gl_context *ctx, GLenum mode )
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{
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SWSETUP_CONTEXT(ctx)->render_prim = mode;
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_swrast_render_primitive( ctx, mode );
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}
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/**
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* Helper macros for setup_vertex_format()
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*/
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#define SWZ ((SWvertex *)0)
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#define SWOffset(MEMBER) (((char *)&(SWZ->MEMBER)) - ((char *)SWZ))
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#define EMIT_ATTR( ATTR, STYLE, MEMBER ) \
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do { \
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map[e].attrib = (ATTR); \
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map[e].format = (STYLE); \
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map[e].offset = SWOffset(MEMBER); \
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e++; \
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} while (0)
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/**
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* Tell the tnl module how to build SWvertex objects for swrast.
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* We'll build the map[] array with that info and pass it to
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* _tnl_install_attrs().
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*/
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static void
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setup_vertex_format(struct gl_context *ctx)
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{
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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SScontext *swsetup = SWSETUP_CONTEXT(ctx);
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GLboolean intColors = ctx->RenderMode == GL_RENDER
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&& CHAN_TYPE != GL_FLOAT;
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if (intColors != swsetup->intColors ||
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tnl->render_inputs_bitset != swsetup->last_index_bitset) {
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GLbitfield64 index_bitset = tnl->render_inputs_bitset;
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struct tnl_attr_map map[_TNL_ATTRIB_MAX];
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unsigned e = 0;
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swsetup->intColors = intColors;
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EMIT_ATTR( _TNL_ATTRIB_POS, EMIT_4F_VIEWPORT, attrib[FRAG_ATTRIB_WPOS] );
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if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_COLOR)) {
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if (swsetup->intColors)
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EMIT_ATTR( _TNL_ATTRIB_COLOR, EMIT_4CHAN_4F_RGBA, color );
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else
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EMIT_ATTR( _TNL_ATTRIB_COLOR, EMIT_4F, attrib[FRAG_ATTRIB_COL]);
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}
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if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_FOG)) {
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EMIT_ATTR( _TNL_ATTRIB_FOG, EMIT_1F, attrib[FRAG_ATTRIB_FOGC]);
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}
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if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_TEX)) {
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EMIT_ATTR( _TNL_ATTRIB_TEX, EMIT_4F,
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attrib[FRAG_ATTRIB_TEX] );
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}
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if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_POINTSIZE))
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EMIT_ATTR( _TNL_ATTRIB_POINTSIZE, EMIT_1F, pointSize );
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_tnl_install_attrs( ctx, map, e,
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ctx->Viewport._WindowMap.m,
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sizeof(SWvertex) );
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swsetup->last_index_bitset = index_bitset;
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}
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}
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/**
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* Prepare to render a vertex buffer.
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* Called via tnl->Driver.Render.Start.
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*/
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static void
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_swsetup_RenderStart( struct gl_context *ctx )
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{
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SScontext *swsetup = SWSETUP_CONTEXT(ctx);
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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struct vertex_buffer *VB = &tnl->vb;
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if (swsetup->NewState & _SWSETUP_NEW_RENDERINDEX) {
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_swsetup_choose_trifuncs(ctx);
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}
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swsetup->NewState = 0;
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_swrast_render_start(ctx);
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/* Important */
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VB->AttribPtr[VERT_ATTRIB_POS] = VB->NdcPtr;
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setup_vertex_format(ctx);
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}
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/*
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* We patch this function into tnl->Driver.Render.Finish.
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* It's called when we finish rendering a vertex buffer.
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*/
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static void
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_swsetup_RenderFinish( struct gl_context *ctx )
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{
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_swrast_render_finish( ctx );
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}
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void
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_swsetup_InvalidateState( struct gl_context *ctx, GLuint new_state )
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{
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SScontext *swsetup = SWSETUP_CONTEXT(ctx);
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swsetup->NewState |= new_state;
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_tnl_invalidate_vertex_state( ctx, new_state );
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}
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void
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_swsetup_Wakeup( struct gl_context *ctx )
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{
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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SScontext *swsetup = SWSETUP_CONTEXT(ctx);
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tnl->Driver.Render.Start = _swsetup_RenderStart;
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tnl->Driver.Render.Finish = _swsetup_RenderFinish;
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tnl->Driver.Render.PrimitiveNotify = _swsetup_RenderPrimitive;
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tnl->Driver.Render.Interp = _tnl_interp;
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tnl->Driver.Render.CopyPV = _tnl_copy_pv;
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tnl->Driver.Render.ClippedPolygon = _tnl_RenderClippedPolygon; /* new */
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tnl->Driver.Render.ClippedLine = _tnl_RenderClippedLine; /* new */
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/* points */
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/* line */
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/* triangle */
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/* quad */
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tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
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tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
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tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
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tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
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tnl->Driver.Render.Multipass = 0;
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_tnl_invalidate_vertices( ctx, ~0 );
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_tnl_need_projected_coords( ctx, GL_TRUE );
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_swsetup_InvalidateState( ctx, ~0 );
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swsetup->verts = (SWvertex *)tnl->clipspace.vertex_buf;
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swsetup->last_index_bitset = 0;
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}
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