src/mesa/drivers/dri/i965/intel_state.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * 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
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "glheader.h"
  30 #include "context.h"
  31 #include "macros.h"
  32 #include "enums.h"
  33 #include "colormac.h"
  34 #include "dd.h"
  35
  36 #include "intel_screen.h"
  37 #include "intel_context.h"
  38 #include "intel_regions.h"
  39 #include "swrast/swrast.h"
  40
  41 int intel_translate_compare_func( GLenum func )
  42 {
  43    switch(func) {
  44    case GL_NEVER:
  45       return COMPAREFUNC_NEVER;
  46    case GL_LESS:
  47       return COMPAREFUNC_LESS;
  48    case GL_LEQUAL:
  49       return COMPAREFUNC_LEQUAL;
  50    case GL_GREATER:
  51       return COMPAREFUNC_GREATER;
  52    case GL_GEQUAL:
  53       return COMPAREFUNC_GEQUAL;
  54    case GL_NOTEQUAL:
  55       return COMPAREFUNC_NOTEQUAL;
  56    case GL_EQUAL:
  57       return COMPAREFUNC_EQUAL;
  58    case GL_ALWAYS:
  59       return COMPAREFUNC_ALWAYS;
  60    }
  61
  62    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func);
  63    return COMPAREFUNC_ALWAYS;
  64 }
  65
  66 int intel_translate_stencil_op( GLenum op )
  67 {
  68    switch(op) {
  69    case GL_KEEP:
  70       return STENCILOP_KEEP;
  71    case GL_ZERO:
  72       return STENCILOP_ZERO;
  73    case GL_REPLACE:
  74       return STENCILOP_REPLACE;
  75    case GL_INCR:
  76       return STENCILOP_INCRSAT;
  77    case GL_DECR:
  78       return STENCILOP_DECRSAT;
  79    case GL_INCR_WRAP:
  80       return STENCILOP_INCR;
  81    case GL_DECR_WRAP:
  82       return STENCILOP_DECR;
  83    case GL_INVERT:
  84       return STENCILOP_INVERT;
  85    default:
  86       return STENCILOP_ZERO;
  87    }
  88 }
  89
  90 int intel_translate_blend_factor( GLenum factor )
  91 {
  92    switch(factor) {
  93    case GL_ZERO:
  94       return BLENDFACT_ZERO;
  95    case GL_SRC_ALPHA:
  96       return BLENDFACT_SRC_ALPHA;
  97    case GL_ONE:
  98       return BLENDFACT_ONE;
  99    case GL_SRC_COLOR:
 100       return BLENDFACT_SRC_COLR;
 101    case GL_ONE_MINUS_SRC_COLOR:
 102       return BLENDFACT_INV_SRC_COLR;
 103    case GL_DST_COLOR:
 104       return BLENDFACT_DST_COLR;
 105    case GL_ONE_MINUS_DST_COLOR:
 106       return BLENDFACT_INV_DST_COLR;
 107    case GL_ONE_MINUS_SRC_ALPHA:
 108       return BLENDFACT_INV_SRC_ALPHA;
 109    case GL_DST_ALPHA:
 110       return BLENDFACT_DST_ALPHA;
 111    case GL_ONE_MINUS_DST_ALPHA:
 112       return BLENDFACT_INV_DST_ALPHA;
 113    case GL_SRC_ALPHA_SATURATE:
 114       return BLENDFACT_SRC_ALPHA_SATURATE;
 115    case GL_CONSTANT_COLOR:
 116       return BLENDFACT_CONST_COLOR;
 117    case GL_ONE_MINUS_CONSTANT_COLOR:
 118       return BLENDFACT_INV_CONST_COLOR;
 119    case GL_CONSTANT_ALPHA:
 120       return BLENDFACT_CONST_ALPHA;
 121    case GL_ONE_MINUS_CONSTANT_ALPHA:
 122       return BLENDFACT_INV_CONST_ALPHA;
 123    }
 124
 125    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, factor);
 126    return BLENDFACT_ZERO;
 127 }
 128
 129 int intel_translate_logic_op( GLenum opcode )
 130 {
 131    switch(opcode) {
 132    case GL_CLEAR:
 133       return LOGICOP_CLEAR;
 134    case GL_AND:
 135       return LOGICOP_AND;
 136    case GL_AND_REVERSE:
 137       return LOGICOP_AND_RVRSE;
 138    case GL_COPY:
 139       return LOGICOP_COPY;
 140    case GL_COPY_INVERTED:
 141       return LOGICOP_COPY_INV;
 142    case GL_AND_INVERTED:
 143       return LOGICOP_AND_INV;
 144    case GL_NOOP:
 145       return LOGICOP_NOOP;
 146    case GL_XOR:
 147       return LOGICOP_XOR;
 148    case GL_OR:
 149       return LOGICOP_OR;
 150    case GL_OR_INVERTED:
 151       return LOGICOP_OR_INV;
 152    case GL_NOR:
 153       return LOGICOP_NOR;
 154    case GL_EQUIV:
 155       return LOGICOP_EQUIV;
 156    case GL_INVERT:
 157       return LOGICOP_INV;
 158    case GL_OR_REVERSE:
 159       return LOGICOP_OR_RVRSE;
 160    case GL_NAND:
 161       return LOGICOP_NAND;
 162    case GL_SET:
 163       return LOGICOP_SET;
 164    default:
 165       return LOGICOP_SET;
 166    }
 167 }
 168
 169
 170 static void intelClearColor(GLcontext *ctx, const GLfloat color[4])
 171 {
 172    struct intel_context *intel = intel_context(ctx);
 173    intelScreenPrivate *screen = intel->intelScreen;
 174
 175    UNCLAMPED_FLOAT_TO_RGBA_CHAN(intel->clear_chan, color);
 176
 177    intel->ClearColor = INTEL_PACKCOLOR(screen->fbFormat,
 178                                        intel->clear_chan[0],
 179                                        intel->clear_chan[1],
 180                                        intel->clear_chan[2],
 181                                        intel->clear_chan[3]);
 182 }
 183
 184
 185
 186 /* Fallback to swrast for select and feedback.
 187  */
 188 static void intelRenderMode( GLcontext *ctx, GLenum mode )
 189 {
 190    struct intel_context *intel = intel_context(ctx);
 191    FALLBACK( intel, INTEL_FALLBACK_RENDERMODE, (mode != GL_RENDER) );
 192 }
 193
 194
 195 void intelInitStateFuncs( struct dd_function_table *functions )
 196 {
 197    functions->RenderMode = intelRenderMode;
 198    functions->ClearColor = intelClearColor;
 199 }
 200
 201
 202
 203
 204 void intelInitState( GLcontext *ctx )
 205 {
 206    /* Mesa should do this for us:
 207     */
 208    ctx->Driver.AlphaFunc( ctx,
 209                           ctx->Color.AlphaFunc,
 210                           ctx->Color.AlphaRef);
 211
 212    ctx->Driver.BlendColor( ctx,
 213                            ctx->Color.BlendColor );
 214
 215    ctx->Driver.BlendEquationSeparate( ctx,
 216                                       ctx->Color.BlendEquationRGB,
 217                                       ctx->Color.BlendEquationA);
 218
 219    ctx->Driver.BlendFuncSeparate( ctx,
 220                                   ctx->Color.BlendSrcRGB,
 221                                   ctx->Color.BlendDstRGB,
 222                                   ctx->Color.BlendSrcA,
 223                                   ctx->Color.BlendDstA);
 224
 225    ctx->Driver.ColorMask( ctx,
 226                           ctx->Color.ColorMask[RCOMP],
 227                           ctx->Color.ColorMask[GCOMP],
 228                           ctx->Color.ColorMask[BCOMP],
 229                           ctx->Color.ColorMask[ACOMP]);
 230
 231    ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 232    ctx->Driver.DepthFunc( ctx, ctx->Depth.Func );
 233    ctx->Driver.DepthMask( ctx, ctx->Depth.Mask );
 234
 235    ctx->Driver.Enable( ctx, GL_ALPHA_TEST, ctx->Color.AlphaEnabled );
 236    ctx->Driver.Enable( ctx, GL_BLEND, ctx->Color.BlendEnabled );
 237    ctx->Driver.Enable( ctx, GL_COLOR_LOGIC_OP, ctx->Color.ColorLogicOpEnabled );
 238    ctx->Driver.Enable( ctx, GL_COLOR_SUM, ctx->Fog.ColorSumEnabled );
 239    ctx->Driver.Enable( ctx, GL_CULL_FACE, ctx->Polygon.CullFlag );
 240    ctx->Driver.Enable( ctx, GL_DEPTH_TEST, ctx->Depth.Test );
 241    ctx->Driver.Enable( ctx, GL_DITHER, ctx->Color.DitherFlag );
 242    ctx->Driver.Enable( ctx, GL_FOG, ctx->Fog.Enabled );
 243    ctx->Driver.Enable( ctx, GL_LIGHTING, ctx->Light.Enabled );
 244    ctx->Driver.Enable( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 245    ctx->Driver.Enable( ctx, GL_POLYGON_STIPPLE, ctx->Polygon.StippleFlag );
 246    ctx->Driver.Enable( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 247    ctx->Driver.Enable( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 248    ctx->Driver.Enable( ctx, GL_TEXTURE_1D, GL_FALSE );
 249    ctx->Driver.Enable( ctx, GL_TEXTURE_2D, GL_FALSE );
 250    ctx->Driver.Enable( ctx, GL_TEXTURE_RECTANGLE_NV, GL_FALSE );
 251    ctx->Driver.Enable( ctx, GL_TEXTURE_3D, GL_FALSE );
 252    ctx->Driver.Enable( ctx, GL_TEXTURE_CUBE_MAP, GL_FALSE );
 253
 254    ctx->Driver.Fogfv( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 255    ctx->Driver.Fogfv( ctx, GL_FOG_MODE, 0 );
 256    ctx->Driver.Fogfv( ctx, GL_FOG_DENSITY, &ctx->Fog.Density );
 257    ctx->Driver.Fogfv( ctx, GL_FOG_START, &ctx->Fog.Start );
 258    ctx->Driver.Fogfv( ctx, GL_FOG_END, &ctx->Fog.End );
 259
 260    ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 261
 262    {
 263       GLfloat f = (GLfloat)ctx->Light.Model.ColorControl;
 264       ctx->Driver.LightModelfv( ctx, GL_LIGHT_MODEL_COLOR_CONTROL, &f );
 265    }
 266
 267    ctx->Driver.LineWidth( ctx, ctx->Line.Width );
 268    ctx->Driver.LogicOpcode( ctx, ctx->Color.LogicOp );
 269    ctx->Driver.PointSize( ctx, ctx->Point.Size );
 270    ctx->Driver.PolygonStipple( ctx, (const GLubyte *)ctx->PolygonStipple );
 271    ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 272                         ctx->Scissor.Width, ctx->Scissor.Height );
 273    ctx->Driver.ShadeModel( ctx, ctx->Light.ShadeModel );
 274    ctx->Driver.StencilFuncSeparate( ctx, GL_FRONT,
 275                                     ctx->Stencil.Function[0],
 276                                     ctx->Stencil.Ref[0],
 277                                     ctx->Stencil.ValueMask[0] );
 278    ctx->Driver.StencilFuncSeparate( ctx, GL_BACK,
 279                                     ctx->Stencil.Function[1],
 280                                     ctx->Stencil.Ref[1],
 281                                     ctx->Stencil.ValueMask[1] );
 282    ctx->Driver.StencilMaskSeparate( ctx, GL_FRONT, ctx->Stencil.WriteMask[0] );
 283    ctx->Driver.StencilMaskSeparate( ctx, GL_BACK, ctx->Stencil.WriteMask[1] );
 284    ctx->Driver.StencilOpSeparate( ctx, GL_FRONT,
 285                                   ctx->Stencil.FailFunc[0],
 286                                   ctx->Stencil.ZFailFunc[0],
 287                                   ctx->Stencil.ZPassFunc[0]);
 288    ctx->Driver.StencilOpSeparate( ctx, GL_BACK,
 289                                   ctx->Stencil.FailFunc[1],
 290                                   ctx->Stencil.ZFailFunc[1],
 291                                   ctx->Stencil.ZPassFunc[1]);
 292
 293
 294    ctx->Driver.DrawBuffer( ctx, ctx->Color.DrawBuffer[0] );
 295 }