src/mesa/drivers/dri/nouveau/nv20_state_fb.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_gldefs.h"
  31 #include "nouveau_util.h"
  32 #include "nouveau_class.h"
  33 #include "nv20_driver.h"
  34
  35 static inline unsigned
  36 get_rt_format(gl_format format)
  37 {
  38         switch (format) {
  39         case MESA_FORMAT_XRGB8888:
  40                 return 0x05;
  41         case MESA_FORMAT_ARGB8888:
  42                 return 0x08;
  43         case MESA_FORMAT_RGB565:
  44                 return 0x03;
  45         case MESA_FORMAT_Z16:
  46                 return 0x10;
  47         case MESA_FORMAT_Z24_S8:
  48                 return 0x20;
  49         default:
  50                 assert(0);
  51         }
  52 }
  53
  54 void
  55 nv20_emit_framebuffer(GLcontext *ctx, int emit)
  56 {
  57         struct nouveau_channel *chan = context_chan(ctx);
  58         struct nouveau_grobj *kelvin = context_eng3d(ctx);
  59         struct nouveau_bo_context *bctx = context_bctx(ctx, FRAMEBUFFER);
  60         struct gl_framebuffer *fb = ctx->DrawBuffer;
  61         struct nouveau_surface *s;
  62         unsigned rt_format = NV20TCL_RT_FORMAT_TYPE_LINEAR;
  63         unsigned rt_pitch = 0, zeta_pitch = 0;
  64         unsigned bo_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR;
  65
  66         if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT)
  67                 return;
  68
  69         /* Render target */
  70         if (fb->_ColorDrawBuffers[0]) {
  71                 s = &to_nouveau_renderbuffer(
  72                         fb->_ColorDrawBuffers[0])->surface;
  73
  74                 rt_format |= get_rt_format(s->format);
  75                 zeta_pitch = rt_pitch = s->pitch;
  76
  77                 nouveau_bo_markl(bctx, kelvin, NV20TCL_COLOR_OFFSET,
  78                                  s->bo, 0, bo_flags);
  79         }
  80
  81         /* depth/stencil */
  82         if (fb->_DepthBuffer) {
  83                 s = &to_nouveau_renderbuffer(
  84                         fb->_DepthBuffer->Wrapped)->surface;
  85
  86                 rt_format |= get_rt_format(s->format);
  87                 zeta_pitch = s->pitch;
  88
  89                 nouveau_bo_markl(bctx, kelvin, NV20TCL_ZETA_OFFSET,
  90                                  s->bo, 0, bo_flags);
  91         }
  92
  93         BEGIN_RING(chan, kelvin, NV20TCL_RT_FORMAT, 2);
  94         OUT_RING(chan, rt_format);
  95         OUT_RING(chan, zeta_pitch << 16 | rt_pitch);
  96
  97         /* Recompute the viewport/scissor state. */
  98         context_dirty(ctx, VIEWPORT);
  99         context_dirty(ctx, SCISSOR);
 100 }
 101
 102 void
 103 nv20_emit_viewport(GLcontext *ctx, int emit)
 104 {
 105         struct nouveau_channel *chan = context_chan(ctx);
 106         struct nouveau_grobj *kelvin = context_eng3d(ctx);
 107         struct gl_framebuffer *fb = ctx->DrawBuffer;
 108         float a[4] = {};
 109
 110         get_viewport_translate(ctx, a);
 111
 112         BEGIN_RING(chan, kelvin, NV20TCL_VIEWPORT_TRANSLATE_X, 4);
 113         OUT_RINGp(chan, a, 4);
 114
 115         BEGIN_RING(chan, kelvin, NV20TCL_VIEWPORT_CLIP_HORIZ(0), 1);
 116         OUT_RING(chan, (fb->Width - 1) << 16);
 117         BEGIN_RING(chan, kelvin, NV20TCL_VIEWPORT_CLIP_VERT(0), 1);
 118         OUT_RING(chan, (fb->Height - 1) << 16);
 119
 120         context_dirty(ctx, PROJECTION);
 121 }