1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: 25 * Keith Whitwell <keithw (at) vmware.com> 26 */ 27 28 29 #include "main/glheader.h" 30 #include "main/imports.h" 31 #include "main/context.h" 32 #include "main/macros.h" 33 #include "main/mtypes.h" 34 #include "main/light.h" 35 #include "math/m_translate.h" 36 #include "math/m_xform.h" 37 #include "main/state.h" 38 #include "main/viewport.h" 39 #include "util/simple_list.h" 40 41 #include "tnl.h" 42 #include "t_context.h" 43 #include "t_pipeline.h" 44 45 #include "vbo/vbo.h" 46 47 GLboolean 48 _tnl_CreateContext( struct gl_context *ctx ) 49 { 50 TNLcontext *tnl; 51 GLuint i; 52 53 /* Create the TNLcontext structure 54 */ 55 ctx->swtnl_context = tnl = calloc(1, sizeof(TNLcontext)); 56 57 if (!tnl) { 58 return GL_FALSE; 59 } 60 61 /* Initialize the VB. 62 */ 63 tnl->vb.Size = ctx->Const.MaxArrayLockSize + MAX_CLIPPED_VERTICES; 64 65 66 /* Initialize tnl state. 67 */ 68 if (ctx->VertexProgram._MaintainTnlProgram) { 69 _tnl_install_pipeline( ctx, _tnl_vp_pipeline ); 70 } else { 71 _tnl_install_pipeline( ctx, _tnl_default_pipeline ); 72 } 73 74 _math_matrix_ctr(&tnl->_WindowMap); 75 76 tnl->NeedNdcCoords = GL_TRUE; 77 tnl->AllowVertexFog = GL_TRUE; 78 tnl->AllowPixelFog = GL_TRUE; 79 80 /* Set a few default values in the driver struct. 81 */ 82 tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts; 83 tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts; 84 tnl->Driver.NotifyMaterialChange = _tnl_validate_shine_tables; 85 86 tnl->nr_blocks = 0; 87 88 /* Lighting miscellaneous */ 89 tnl->_ShineTabList = MALLOC_STRUCT( tnl_shine_tab ); 90 make_empty_list( tnl->_ShineTabList ); 91 /* Allocate 10 (arbitrary) shininess lookup tables */ 92 for (i = 0 ; i < 10 ; i++) { 93 struct tnl_shine_tab *s = MALLOC_STRUCT( tnl_shine_tab ); 94 s->shininess = -1; 95 s->refcount = 0; 96 insert_at_tail( tnl->_ShineTabList, s ); 97 } 98 99 /* plug in the VBO drawing function */ 100 vbo_set_draw_func(ctx, _tnl_draw_prims); 101 102 _math_init_transformation(); 103 _math_init_translate(); 104 105 return GL_TRUE; 106 } 107 108 109 void 110 _tnl_DestroyContext( struct gl_context *ctx ) 111 { 112 struct tnl_shine_tab *s, *tmps; 113 TNLcontext *tnl = TNL_CONTEXT(ctx); 114 115 _math_matrix_dtr(&tnl->_WindowMap); 116 117 /* Free lighting shininess exponentiation table */ 118 foreach_s( s, tmps, tnl->_ShineTabList ) { 119 free( s ); 120 } 121 free( tnl->_ShineTabList ); 122 123 _tnl_destroy_pipeline( ctx ); 124 125 free(tnl); 126 ctx->swtnl_context = NULL; 127 } 128 129 130 void 131 _tnl_InvalidateState( struct gl_context *ctx, GLuint new_state ) 132 { 133 TNLcontext *tnl = TNL_CONTEXT(ctx); 134 const struct gl_program *vp = ctx->VertexProgram._Current; 135 const struct gl_program *fp = ctx->FragmentProgram._Current; 136 GLuint i; 137 138 if (new_state & (_NEW_HINT | _NEW_PROGRAM)) { 139 assert(tnl->AllowVertexFog || tnl->AllowPixelFog); 140 tnl->_DoVertexFog = ((tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST)) 141 || !tnl->AllowPixelFog) && !fp; 142 } 143 144 tnl->pipeline.new_state |= new_state; 145 146 /* Calculate tnl->render_inputs. This bitmask indicates which vertex 147 * attributes need to be emitted to the rasterizer. 148 */ 149 tnl->render_inputs_bitset = BITFIELD64_BIT(_TNL_ATTRIB_POS); 150 151 if (!fp || (fp->info.inputs_read & VARYING_BIT_COL0)) { 152 tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_COLOR0); 153 } 154 155 if (_mesa_need_secondary_color(ctx)) 156 tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_COLOR1); 157 158 for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) { 159 if (ctx->Texture._EnabledCoordUnits & (1 << i) || 160 (fp && fp->info.inputs_read & VARYING_BIT_TEX(i))) { 161 tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_TEX(i)); 162 } 163 } 164 165 if (ctx->Fog.Enabled 166 || (fp != NULL && (fp->info.inputs_read & VARYING_BIT_FOGC) != 0)) { 167 /* Either fixed-function fog or a fragment program needs fog coord. 168 */ 169 tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_FOG); 170 } 171 172 if (ctx->Polygon.FrontMode != GL_FILL || 173 ctx->Polygon.BackMode != GL_FILL) 174 tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_EDGEFLAG); 175 176 if (ctx->RenderMode == GL_FEEDBACK) 177 tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_TEX0); 178 179 if (ctx->Point._Attenuated || ctx->VertexProgram.PointSizeEnabled) 180 tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_POINTSIZE); 181 182 /* check for varying vars which are written by the vertex program */ 183 if (vp) { 184 GLuint i; 185 for (i = 0; i < MAX_VARYING; i++) { 186 if (vp->info.outputs_written & 187 BITFIELD64_BIT(VARYING_SLOT_VAR0 + i)) { 188 tnl->render_inputs_bitset |= BITFIELD64_BIT(_TNL_ATTRIB_GENERIC(i)); 189 } 190 } 191 } 192 193 if (new_state & (_NEW_VIEWPORT | _NEW_BUFFERS)) { 194 float scale[3], translate[3]; 195 _mesa_get_viewport_xform(ctx, 0, scale, translate); 196 _math_matrix_viewport(&tnl->_WindowMap, scale, translate, 197 ctx->DrawBuffer->_DepthMaxF); 198 } 199 } 200 201 202 void 203 _tnl_wakeup( struct gl_context *ctx ) 204 { 205 /* Assume we haven't been getting state updates either: 206 */ 207 _tnl_InvalidateState( ctx, ~0 ); 208 209 #if 0 210 if (ctx->Light.ColorMaterialEnabled) { 211 _mesa_update_color_material( ctx, 212 ctx->Current.Attrib[VERT_ATTRIB_COLOR0] ); 213 } 214 #endif 215 } 216 217 218 219 220 /** 221 * Drivers call this function to tell the TCL module whether or not 222 * it wants Normalized Device Coords (NDC) computed. I.e. whether 223 * we should "Divide-by-W". Software renders will want that. 224 */ 225 void 226 _tnl_need_projected_coords( struct gl_context *ctx, GLboolean mode ) 227 { 228 TNLcontext *tnl = TNL_CONTEXT(ctx); 229 tnl->NeedNdcCoords = mode; 230 } 231 232 void 233 _tnl_allow_vertex_fog( struct gl_context *ctx, GLboolean value ) 234 { 235 TNLcontext *tnl = TNL_CONTEXT(ctx); 236 tnl->AllowVertexFog = value; 237 tnl->_DoVertexFog = ((tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST)) 238 || !tnl->AllowPixelFog) && !ctx->FragmentProgram._Current; 239 240 } 241 242 void 243 _tnl_allow_pixel_fog( struct gl_context *ctx, GLboolean value ) 244 { 245 TNLcontext *tnl = TNL_CONTEXT(ctx); 246 tnl->AllowPixelFog = value; 247 tnl->_DoVertexFog = ((tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST)) 248 || !tnl->AllowPixelFog) && !ctx->FragmentProgram._Current; 249 } 250 251
