src/mesa/drivers/dri/nouveau/nv04_context.c

   1 /*
   2  * Copyright (C) 2009 Francisco Jerez.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "nouveau_driver.h"
  28 #include "nouveau_context.h"
  29 #include "nouveau_fbo.h"
  30 #include "nouveau_util.h"
  31 #include "nouveau_class.h"
  32 #include "nv04_driver.h"
  33
  34 struct nouveau_grobj *
  35 nv04_context_engine(GLcontext *ctx)
  36 {
  37         struct nv04_context *nctx = to_nv04_context(ctx);
  38         struct nouveau_screen *screen = nctx->base.screen;
  39         struct nouveau_grobj *fahrenheit;
  40
  41         if (ctx->Texture.Unit[0].EnvMode == GL_COMBINE ||
  42             ctx->Texture.Unit[0].EnvMode == GL_BLEND ||
  43             ctx->Texture.Unit[1]._ReallyEnabled ||
  44             ctx->Stencil.Enabled)
  45                 fahrenheit = screen->eng3dm;
  46         else
  47                 fahrenheit = screen->eng3d;
  48
  49         if (fahrenheit != nctx->eng3d) {
  50                 nctx->eng3d = fahrenheit;
  51
  52                 if (nv04_mtex_engine(fahrenheit)) {
  53                         context_dirty_i(ctx, TEX_ENV, 0);
  54                         context_dirty_i(ctx, TEX_ENV, 1);
  55                         context_dirty_i(ctx, TEX_OBJ, 0);
  56                         context_dirty_i(ctx, TEX_OBJ, 1);
  57                         context_dirty(ctx, CONTROL);
  58                         context_dirty(ctx, BLEND);
  59                 } else {
  60                         context_bctx_i(ctx, TEXTURE, 1);
  61                         context_dirty_i(ctx, TEX_ENV, 0);
  62                         context_dirty_i(ctx, TEX_OBJ, 0);
  63                         context_dirty(ctx, CONTROL);
  64                         context_dirty(ctx, BLEND);
  65                 }
  66         }
  67
  68         return fahrenheit;
  69 }
  70
  71 static void
  72 init_dummy_texture(GLcontext *ctx)
  73 {
  74         struct nouveau_surface *s = &to_nv04_context(ctx)->dummy_texture;
  75
  76         nouveau_surface_alloc(ctx, s, SWIZZLED,
  77                               NOUVEAU_BO_MAP | NOUVEAU_BO_VRAM,
  78                               MESA_FORMAT_ARGB8888, 1, 1);
  79
  80         nouveau_bo_map(s->bo, NOUVEAU_BO_WR);
  81         *(uint32_t *)s->bo->map = 0xffffffff;
  82         nouveau_bo_unmap(s->bo);
  83 }
  84
  85 GLcontext *
  86 nv04_context_create(struct nouveau_screen *screen, const GLvisual *visual,
  87                     GLcontext *share_ctx)
  88 {
  89         struct nv04_context *nctx;
  90         GLcontext *ctx;
  91
  92         nctx = CALLOC_STRUCT(nv04_context);
  93         if (!nctx)
  94                 return NULL;
  95
  96         ctx = &nctx->base.base;
  97         nouveau_context_init(ctx, screen, visual, share_ctx);
  98
  99         ctx->Const.MaxTextureCoordUnits = NV04_TEXTURE_UNITS;
 100         ctx->Const.MaxTextureImageUnits = NV04_TEXTURE_UNITS;
 101         ctx->Const.MaxTextureUnits = NV04_TEXTURE_UNITS;
 102         ctx->Const.MaxTextureMaxAnisotropy = 2;
 103         ctx->Const.MaxTextureLodBias = 15;
 104
 105         init_dummy_texture(ctx);
 106         nv04_render_init(ctx);
 107
 108         return ctx;
 109 }
 110
 111 void
 112 nv04_context_destroy(GLcontext *ctx)
 113 {
 114         nv04_render_destroy(ctx);
 115         nouveau_surface_ref(NULL, &to_nv04_context(ctx)->dummy_texture);
 116
 117         FREE(ctx);
 118 }