/* * 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 */ #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 "tnl.h" #include "t_context.h" #include "t_pipeline.h" #include "t_vp_build.h" #include "vbo/vbo.h" GLboolean _tnl_CreateContext( GLcontext *ctx ) { TNLcontext *tnl; /* Create the TNLcontext structure */ ctx->swtnl_context = tnl = (TNLcontext *) CALLOC( 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 = _mesa_validate_all_lighting_tables; tnl->nr_blocks = 0; /* 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( GLcontext *ctx ) { TNLcontext *tnl = TNL_CONTEXT(ctx); _tnl_destroy_pipeline( ctx ); FREE(tnl); ctx->swtnl_context = NULL; } void _tnl_InvalidateState( GLcontext *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; 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. */ if (ctx->Visual.rgbMode) { GLuint i; RENDERINPUTS_ZERO( tnl->render_inputs_bitset ); RENDERINPUTS_SET( tnl->render_inputs_bitset, _TNL_ATTRIB_POS ); if (!fp || (fp->Base.InputsRead & FRAG_BIT_COL0)) { RENDERINPUTS_SET( tnl->render_inputs_bitset, _TNL_ATTRIB_COLOR0 ); } if (NEED_SECONDARY_COLOR(ctx)) RENDERINPUTS_SET( tnl->render_inputs_bitset, _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))) { RENDERINPUTS_SET( tnl->render_inputs_bitset, _TNL_ATTRIB_TEX(i) ); } } } else { RENDERINPUTS_SET( tnl->render_inputs_bitset, _TNL_ATTRIB_POS ); RENDERINPUTS_SET( tnl->render_inputs_bitset, _TNL_ATTRIB_COLOR_INDEX ); } if (ctx->Fog.Enabled) { /* fixed-function fog */ RENDERINPUTS_SET( tnl->render_inputs_bitset, _TNL_ATTRIB_FOG ); } else if (fp) { if (fp->FogOption != GL_NONE || (fp->Base.InputsRead & FRAG_BIT_FOGC)) { /* fragment program needs fog coord */ RENDERINPUTS_SET( tnl->render_inputs_bitset, _TNL_ATTRIB_FOG ); } } if (ctx->Polygon.FrontMode != GL_FILL || ctx->Polygon.BackMode != GL_FILL) RENDERINPUTS_SET( tnl->render_inputs_bitset, _TNL_ATTRIB_EDGEFLAG ); if (ctx->RenderMode == GL_FEEDBACK) RENDERINPUTS_SET( tnl->render_inputs_bitset, _TNL_ATTRIB_TEX0 ); if (ctx->Point._Attenuated || (ctx->VertexProgram._Enabled && ctx->VertexProgram.PointSizeEnabled)) RENDERINPUTS_SET( tnl->render_inputs_bitset, _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 & (1 << (VERT_RESULT_VAR0 + i))) { RENDERINPUTS_SET(tnl->render_inputs_bitset, _TNL_ATTRIB_GENERIC(i)); } } } } void _tnl_wakeup( GLcontext *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( GLcontext *ctx, GLboolean mode ) { TNLcontext *tnl = TNL_CONTEXT(ctx); tnl->NeedNdcCoords = mode; } void _tnl_allow_vertex_fog( GLcontext *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( GLcontext *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; }