src/mesa/drivers/dri/nouveau/nv10_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 "nv10_driver.h"
  33
  34 static void
  35 nv10_clear(GLcontext *ctx, GLbitfield buffers)
  36 {
  37         struct nouveau_channel *chan = context_chan(ctx);
  38         struct nouveau_grobj *celsius = context_eng3d(ctx);
  39         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(
  40                 ctx->DrawBuffer);
  41
  42         nouveau_validate_framebuffer(ctx);
  43
  44         /* Clear the LMA depth buffer, if present. */
  45         if ((buffers & BUFFER_BIT_DEPTH) && ctx->Depth.Mask &&
  46             nfb->lma_bo) {
  47                 struct nouveau_surface *s = &to_nouveau_renderbuffer(
  48                         nfb->base._DepthBuffer->Wrapped)->surface;
  49
  50                 BEGIN_RING(chan, celsius, NV17TCL_LMA_DEPTH_FILL_VALUE, 1);
  51                 OUT_RING(chan, pack_zs_f(s->format, ctx->Depth.Clear, 0));
  52                 BEGIN_RING(chan, celsius, NV17TCL_LMA_DEPTH_BUFFER_CLEAR, 1);
  53                 OUT_RING(chan, 1);
  54         }
  55
  56         nouveau_clear(ctx, buffers);
  57 }
  58
  59 GLcontext *
  60 nv10_context_create(struct nouveau_screen *screen, const GLvisual *visual,
  61                     GLcontext *share_ctx)
  62 {
  63         struct nouveau_context *nctx;
  64         GLcontext *ctx;
  65
  66         nctx = CALLOC_STRUCT(nouveau_context);
  67         if (!nctx)
  68                 return NULL;
  69
  70         ctx = &nctx->base;
  71         nouveau_context_init(ctx, screen, visual, share_ctx);
  72
  73         ctx->Const.MaxTextureLevels = 12;
  74         ctx->Const.MaxTextureCoordUnits = NV10_TEXTURE_UNITS;
  75         ctx->Const.MaxTextureImageUnits = NV10_TEXTURE_UNITS;
  76         ctx->Const.MaxTextureUnits = NV10_TEXTURE_UNITS;
  77         ctx->Const.MaxTextureMaxAnisotropy = 2;
  78         ctx->Const.MaxTextureLodBias = 15;
  79         ctx->Driver.Clear = nv10_clear;
  80
  81         nv10_render_init(ctx);
  82
  83         return ctx;
  84 }
  85
  86 void
  87 nv10_context_destroy(GLcontext *ctx)
  88 {
  89         nv10_render_destroy(ctx);
  90         FREE(ctx);
  91 }