diff options
Diffstat (limited to 'mesalib/src/mesa/tnl/t_context.c')
| -rw-r--r-- | mesalib/src/mesa/tnl/t_context.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/mesalib/src/mesa/tnl/t_context.c b/mesalib/src/mesa/tnl/t_context.c new file mode 100644 index 000000000..f2771cde0 --- /dev/null +++ b/mesalib/src/mesa/tnl/t_context.c @@ -0,0 +1,231 @@ +/* + * 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 "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; +} + |