src/mesa/drivers/common/driverfuncs.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2007  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
  25
  26 #include "main/glheader.h"
  27 #include "main/imports.h"
  28 #include "main/accum.h"
  29 #include "main/arrayobj.h"
  30 #include "main/context.h"
  31 #include "main/formatquery.h"
  32 #include "main/framebuffer.h"
  33 #include "main/mipmap.h"
  34 #include "main/queryobj.h"
  35 #include "main/readpix.h"
  36 #include "main/renderbuffer.h"
  37 #include "main/shaderobj.h"
  38 #include "main/texcompress.h"
  39 #include "main/texformat.h"
  40 #include "main/texgetimage.h"
  41 #include "main/teximage.h"
  42 #include "main/texobj.h"
  43 #include "main/texstorage.h"
  44 #include "main/texstore.h"
  45 #include "main/bufferobj.h"
  46 #include "main/fbobject.h"
  47 #include "main/samplerobj.h"
  48 #include "main/syncobj.h"
  49 #include "main/texturebarrier.h"
  50 #include "main/transformfeedback.h"
  51
  52 #include "program/program.h"
  53 #include "tnl/tnl.h"
  54 #include "swrast/swrast.h"
  55 #include "swrast/s_renderbuffer.h"
  56
  57 #include "driverfuncs.h"
  58 #include "meta.h"
  59
  60
  61
  62 /**
  63  * Plug in default functions for all pointers in the dd_function_table
  64  * structure.
  65  * Device drivers should call this function and then plug in any
  66  * functions which it wants to override.
  67  * Some functions (pointers) MUST be implemented by all drivers (REQUIRED).
  68  *
  69  * \param table the dd_function_table to initialize
  70  */
  71 void
  72 _mesa_init_driver_functions(struct dd_function_table *driver)
  73 {
  74    memset(driver, 0, sizeof(*driver));
  75
  76    driver->GetString = NULL;  /* REQUIRED! */
  77    driver->UpdateState = NULL;  /* REQUIRED! */
  78    driver->GetBufferSize = NULL;  /* REQUIRED! */
  79    driver->ResizeBuffers = _mesa_resize_framebuffer;
  80
  81    driver->Finish = NULL;
  82    driver->Flush = NULL;
  83
  84    /* framebuffer/image functions */
  85    driver->Clear = _swrast_Clear;
  86    driver->Accum = _mesa_accum;
  87    driver->RasterPos = _tnl_RasterPos;
  88    driver->DrawPixels = _swrast_DrawPixels;
  89    driver->ReadPixels = _mesa_readpixels;
  90    driver->CopyPixels = _swrast_CopyPixels;
  91    driver->Bitmap = _swrast_Bitmap;
  92
  93    /* Texture functions */
  94    driver->ChooseTextureFormat = _mesa_choose_tex_format;
  95    driver->QuerySamplesForFormat = _mesa_query_samples_for_format;
  96    driver->TexImage = _mesa_store_teximage;
  97    driver->TexSubImage = _mesa_store_texsubimage;
  98    driver->GetTexImage = _mesa_meta_GetTexImage;
  99    driver->CopyTexSubImage = _mesa_meta_CopyTexSubImage;
 100    driver->GenerateMipmap = _mesa_meta_GenerateMipmap;
 101    driver->TestProxyTexImage = _mesa_test_proxy_teximage;
 102    driver->CompressedTexImage = _mesa_store_compressed_teximage;
 103    driver->CompressedTexSubImage = _mesa_store_compressed_texsubimage;
 104    driver->GetCompressedTexImage = _mesa_get_compressed_teximage;
 105    driver->BindTexture = NULL;
 106    driver->NewTextureObject = _mesa_new_texture_object;
 107    driver->DeleteTexture = _mesa_delete_texture_object;
 108    driver->NewTextureImage = _swrast_new_texture_image;
 109    driver->DeleteTextureImage = _swrast_delete_texture_image;
 110    driver->AllocTextureImageBuffer = _swrast_alloc_texture_image_buffer;
 111    driver->FreeTextureImageBuffer = _swrast_free_texture_image_buffer;
 112    driver->MapTextureImage = _swrast_map_teximage;
 113    driver->UnmapTextureImage = _swrast_unmap_teximage;
 114    driver->DrawTex = _mesa_meta_DrawTex;
 115
 116    /* Vertex/fragment programs */
 117    driver->BindProgram = NULL;
 118    driver->NewProgram = _mesa_new_program;
 119    driver->DeleteProgram = _mesa_delete_program;
 120
 121    /* simple state commands */
 122    driver->AlphaFunc = NULL;
 123    driver->BlendColor = NULL;
 124    driver->BlendEquationSeparate = NULL;
 125    driver->BlendFuncSeparate = NULL;
 126    driver->ClipPlane = NULL;
 127    driver->ColorMask = NULL;
 128    driver->ColorMaterial = NULL;
 129    driver->CullFace = NULL;
 130    driver->DrawBuffer = NULL;
 131    driver->DrawBuffers = NULL;
 132    driver->FrontFace = NULL;
 133    driver->DepthFunc = NULL;
 134    driver->DepthMask = NULL;
 135    driver->DepthRange = NULL;
 136    driver->Enable = NULL;
 137    driver->Fogfv = NULL;
 138    driver->Hint = NULL;
 139    driver->Lightfv = NULL;
 140    driver->LightModelfv = NULL;
 141    driver->LineStipple = NULL;
 142    driver->LineWidth = NULL;
 143    driver->LogicOpcode = NULL;
 144    driver->PointParameterfv = NULL;
 145    driver->PointSize = NULL;
 146    driver->PolygonMode = NULL;
 147    driver->PolygonOffset = NULL;
 148    driver->PolygonStipple = NULL;
 149    driver->ReadBuffer = NULL;
 150    driver->RenderMode = NULL;
 151    driver->Scissor = NULL;
 152    driver->ShadeModel = NULL;
 153    driver->StencilFuncSeparate = NULL;
 154    driver->StencilOpSeparate = NULL;
 155    driver->StencilMaskSeparate = NULL;
 156    driver->TexGen = NULL;
 157    driver->TexEnv = NULL;
 158    driver->TexParameter = NULL;
 159    driver->Viewport = NULL;
 160
 161    /* buffer objects */
 162    _mesa_init_buffer_object_functions(driver);
 163
 164    /* query objects */
 165    _mesa_init_query_object_functions(driver);
 166
 167    _mesa_init_sync_object_functions(driver);
 168
 169    driver->NewFramebuffer = _mesa_new_framebuffer;
 170    driver->NewRenderbuffer = _swrast_new_soft_renderbuffer;
 171    driver->MapRenderbuffer = _swrast_map_soft_renderbuffer;
 172    driver->UnmapRenderbuffer = _swrast_unmap_soft_renderbuffer;
 173    driver->RenderTexture = _swrast_render_texture;
 174    driver->FinishRenderTexture = _swrast_finish_render_texture;
 175    driver->FramebufferRenderbuffer = _mesa_framebuffer_renderbuffer;
 176    driver->ValidateFramebuffer = _mesa_validate_framebuffer;
 177
 178    driver->BlitFramebuffer = _swrast_BlitFramebuffer;
 179    driver->DiscardFramebuffer = NULL;
 180
 181    _mesa_init_texture_barrier_functions(driver);
 182
 183    /* APPLE_vertex_array_object */
 184    driver->NewArrayObject = _mesa_new_array_object;
 185    driver->DeleteArrayObject = _mesa_delete_array_object;
 186    driver->BindArrayObject = NULL;
 187
 188    _mesa_init_shader_object_functions(driver);
 189
 190    _mesa_init_transform_feedback_functions(driver);
 191
 192    _mesa_init_sampler_object_functions(driver);
 193
 194    /* T&L stuff */
 195    driver->CurrentExecPrimitive = 0;
 196    driver->CurrentSavePrimitive = 0;
 197    driver->NeedFlush = 0;
 198    driver->SaveNeedFlush = 0;
 199
 200    driver->ProgramStringNotify = _tnl_program_string;
 201    driver->FlushVertices = NULL;
 202    driver->SaveFlushVertices = NULL;
 203    driver->NotifySaveBegin = NULL;
 204    driver->LightingSpaceChange = NULL;
 205
 206    /* display list */
 207    driver->NewList = NULL;
 208    driver->EndList = NULL;
 209    driver->BeginCallList = NULL;
 210    driver->EndCallList = NULL;
 211
 212    /* GL_ARB_texture_storage */
 213    driver->AllocTextureStorage = _mesa_alloc_texture_storage;
 214
 215    /* GL_ARB_texture_multisample */
 216    driver->GetSamplePosition = NULL;
 217 }
 218
 219
 220 /**
 221  * Call the ctx->Driver.* state functions with current values to initialize
 222  * driver state.
 223  * Only the Intel drivers use this so far.
 224  */
 225 void
 226 _mesa_init_driver_state(struct gl_context *ctx)
 227 {
 228    ctx->Driver.AlphaFunc(ctx, ctx->Color.AlphaFunc, ctx->Color.AlphaRef);
 229
 230    ctx->Driver.BlendColor(ctx, ctx->Color.BlendColor);
 231
 232    ctx->Driver.BlendEquationSeparate(ctx,
 233                                      ctx->Color.Blend[0].EquationRGB,
 234                                      ctx->Color.Blend[0].EquationA);
 235
 236    ctx->Driver.BlendFuncSeparate(ctx,
 237                                  ctx->Color.Blend[0].SrcRGB,
 238                                  ctx->Color.Blend[0].DstRGB,
 239                                  ctx->Color.Blend[0].SrcA,
 240                                  ctx->Color.Blend[0].DstA);
 241
 242    if (ctx->Driver.ColorMaskIndexed) {
 243       GLuint i;
 244       for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
 245          ctx->Driver.ColorMaskIndexed(ctx, i,
 246                                       ctx->Color.ColorMask[i][RCOMP],
 247                                       ctx->Color.ColorMask[i][GCOMP],
 248                                       ctx->Color.ColorMask[i][BCOMP],
 249                                       ctx->Color.ColorMask[i][ACOMP]);
 250       }
 251    }
 252    else {
 253       ctx->Driver.ColorMask(ctx,
 254                             ctx->Color.ColorMask[0][RCOMP],
 255                             ctx->Color.ColorMask[0][GCOMP],
 256                             ctx->Color.ColorMask[0][BCOMP],
 257                             ctx->Color.ColorMask[0][ACOMP]);
 258    }
 259
 260    ctx->Driver.CullFace(ctx, ctx->Polygon.CullFaceMode);
 261    ctx->Driver.DepthFunc(ctx, ctx->Depth.Func);
 262    ctx->Driver.DepthMask(ctx, ctx->Depth.Mask);
 263
 264    ctx->Driver.Enable(ctx, GL_ALPHA_TEST, ctx->Color.AlphaEnabled);
 265    ctx->Driver.Enable(ctx, GL_BLEND, ctx->Color.BlendEnabled);
 266    ctx->Driver.Enable(ctx, GL_COLOR_LOGIC_OP, ctx->Color.ColorLogicOpEnabled);
 267    ctx->Driver.Enable(ctx, GL_COLOR_SUM, ctx->Fog.ColorSumEnabled);
 268    ctx->Driver.Enable(ctx, GL_CULL_FACE, ctx->Polygon.CullFlag);
 269    ctx->Driver.Enable(ctx, GL_DEPTH_TEST, ctx->Depth.Test);
 270    ctx->Driver.Enable(ctx, GL_DITHER, ctx->Color.DitherFlag);
 271    ctx->Driver.Enable(ctx, GL_FOG, ctx->Fog.Enabled);
 272    ctx->Driver.Enable(ctx, GL_LIGHTING, ctx->Light.Enabled);
 273    ctx->Driver.Enable(ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag);
 274    ctx->Driver.Enable(ctx, GL_POLYGON_STIPPLE, ctx->Polygon.StippleFlag);
 275    ctx->Driver.Enable(ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled);
 276    ctx->Driver.Enable(ctx, GL_STENCIL_TEST, ctx->Stencil._Enabled);
 277    ctx->Driver.Enable(ctx, GL_TEXTURE_1D, GL_FALSE);
 278    ctx->Driver.Enable(ctx, GL_TEXTURE_2D, GL_FALSE);
 279    ctx->Driver.Enable(ctx, GL_TEXTURE_RECTANGLE_NV, GL_FALSE);
 280    ctx->Driver.Enable(ctx, GL_TEXTURE_3D, GL_FALSE);
 281    ctx->Driver.Enable(ctx, GL_TEXTURE_CUBE_MAP, GL_FALSE);
 282
 283    ctx->Driver.Fogfv(ctx, GL_FOG_COLOR, ctx->Fog.Color);
 284    {
 285       GLfloat mode = (GLfloat) ctx->Fog.Mode;
 286       ctx->Driver.Fogfv(ctx, GL_FOG_MODE, &mode);
 287    }
 288    ctx->Driver.Fogfv(ctx, GL_FOG_DENSITY, &ctx->Fog.Density);
 289    ctx->Driver.Fogfv(ctx, GL_FOG_START, &ctx->Fog.Start);
 290    ctx->Driver.Fogfv(ctx, GL_FOG_END, &ctx->Fog.End);
 291
 292    ctx->Driver.FrontFace(ctx, ctx->Polygon.FrontFace);
 293
 294    {
 295       GLfloat f = (GLfloat) ctx->Light.Model.ColorControl;
 296       ctx->Driver.LightModelfv(ctx, GL_LIGHT_MODEL_COLOR_CONTROL, &f);
 297    }
 298
 299    ctx->Driver.LineWidth(ctx, ctx->Line.Width);
 300    ctx->Driver.LogicOpcode(ctx, ctx->Color.LogicOp);
 301    ctx->Driver.PointSize(ctx, ctx->Point.Size);
 302    ctx->Driver.PolygonStipple(ctx, (const GLubyte *) ctx->PolygonStipple);
 303    ctx->Driver.Scissor(ctx, ctx->Scissor.X, ctx->Scissor.Y,
 304                        ctx->Scissor.Width, ctx->Scissor.Height);
 305    ctx->Driver.ShadeModel(ctx, ctx->Light.ShadeModel);
 306    ctx->Driver.StencilFuncSeparate(ctx, GL_FRONT,
 307                                    ctx->Stencil.Function[0],
 308                                    ctx->Stencil.Ref[0],
 309                                    ctx->Stencil.ValueMask[0]);
 310    ctx->Driver.StencilFuncSeparate(ctx, GL_BACK,
 311                                    ctx->Stencil.Function[1],
 312                                    ctx->Stencil.Ref[1],
 313                                    ctx->Stencil.ValueMask[1]);
 314    ctx->Driver.StencilMaskSeparate(ctx, GL_FRONT, ctx->Stencil.WriteMask[0]);
 315    ctx->Driver.StencilMaskSeparate(ctx, GL_BACK, ctx->Stencil.WriteMask[1]);
 316    ctx->Driver.StencilOpSeparate(ctx, GL_FRONT,
 317                                  ctx->Stencil.FailFunc[0],
 318                                  ctx->Stencil.ZFailFunc[0],
 319                                  ctx->Stencil.ZPassFunc[0]);
 320    ctx->Driver.StencilOpSeparate(ctx, GL_BACK,
 321                                  ctx->Stencil.FailFunc[1],
 322                                  ctx->Stencil.ZFailFunc[1],
 323                                  ctx->Stencil.ZPassFunc[1]);
 324
 325
 326    ctx->Driver.DrawBuffer(ctx, ctx->Color.DrawBuffer[0]);
 327 }