src/mesa/drivers/dri/nouveau/nouveau_screen.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_drmif.h"
  31 #include "nv04_driver.h"
  32 #include "nv10_driver.h"
  33 #include "nv20_driver.h"
  34
  35 #include "main/framebuffer.h"
  36 #include "main/renderbuffer.h"
  37
  38 static const __DRIextension *nouveau_screen_extensions[];
  39
  40 static void
  41 nouveau_destroy_screen(__DRIscreen *dri_screen);
  42
  43 static const __DRIconfig **
  44 nouveau_get_configs(void)
  45 {
  46         __DRIconfig **configs = NULL;
  47         int i;
  48
  49         const uint8_t depth_bits[]   = { 0, 16, 24, 24 };
  50         const uint8_t stencil_bits[] = { 0,  0,  0,  8 };
  51         const uint8_t msaa_samples[] = { 0 };
  52
  53         const struct {
  54                 GLenum format;
  55                 GLenum type;
  56         } fb_formats[] = {
  57                 { GL_RGB , GL_UNSIGNED_SHORT_5_6_5     },
  58                 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV },
  59                 { GL_BGR , GL_UNSIGNED_INT_8_8_8_8_REV },
  60         };
  61
  62         const GLenum back_buffer_modes[] = {
  63                 GLX_NONE, GLX_SWAP_UNDEFINED_OML
  64         };
  65
  66         for (i = 0; i < Elements(fb_formats); i++) {
  67                 __DRIconfig **config;
  68
  69                 config = driCreateConfigs(fb_formats[i].format,
  70                                           fb_formats[i].type,
  71                                           depth_bits, stencil_bits,
  72                                           Elements(depth_bits),
  73                                           back_buffer_modes,
  74                                           Elements(back_buffer_modes),
  75                                           msaa_samples,
  76                                           Elements(msaa_samples),
  77                                           GL_TRUE);
  78                 assert(config);
  79
  80                 configs = configs ? driConcatConfigs(configs, config)
  81                         : config;
  82         }
  83
  84         return (const __DRIconfig **)configs;
  85 }
  86
  87 static const __DRIconfig **
  88 nouveau_init_screen2(__DRIscreen *dri_screen)
  89 {
  90         const __DRIconfig **configs;
  91         struct nouveau_screen *screen;
  92         int ret;
  93
  94         /* Allocate the screen. */
  95         screen = CALLOC_STRUCT(nouveau_screen);
  96         if (!screen)
  97                 return NULL;
  98
  99         dri_screen->private = screen;
 100         dri_screen->extensions = nouveau_screen_extensions;
 101         screen->dri_screen = dri_screen;
 102
 103         /* Open the DRM device. */
 104         ret = nouveau_device_open_existing(&screen->device, 0, dri_screen->fd,
 105                                            0);
 106         if (ret) {
 107                 nouveau_error("Error opening the DRM device.\n");
 108                 goto fail;
 109         }
 110
 111         /* Choose the card specific function pointers. */
 112         switch (screen->device->chipset & 0xf0) {
 113         case 0x00:
 114                 screen->driver = &nv04_driver;
 115                 break;
 116         case 0x10:
 117                 screen->driver = &nv10_driver;
 118                 break;
 119         case 0x20:
 120                 screen->driver = &nv20_driver;
 121                 break;
 122         default:
 123                 assert(0);
 124         }
 125
 126         configs = nouveau_get_configs();
 127         if (!configs)
 128                 goto fail;
 129
 130         return configs;
 131 fail:
 132         nouveau_destroy_screen(dri_screen);
 133         return NULL;
 134
 135 }
 136
 137 static void
 138 nouveau_destroy_screen(__DRIscreen *dri_screen)
 139 {
 140         struct nouveau_screen *screen = dri_screen->private;
 141
 142         if (!screen)
 143                 return;
 144
 145         if (screen->device)
 146                 nouveau_device_close(&screen->device);
 147
 148         FREE(screen);
 149         dri_screen->private = NULL;
 150 }
 151
 152 static GLboolean
 153 nouveau_create_buffer(__DRIscreen *dri_screen,
 154                       __DRIdrawable *drawable,
 155                       const __GLcontextModes *visual,
 156                       GLboolean is_pixmap)
 157 {
 158         struct gl_renderbuffer  *rb;
 159         struct gl_framebuffer *fb;
 160         GLenum color_format;
 161
 162         if (is_pixmap)
 163                 return GL_FALSE; /* not implemented */
 164
 165         if (visual->redBits == 5)
 166                 color_format = GL_RGB5;
 167         else if (visual->alphaBits == 0)
 168                 color_format = GL_RGB8;
 169         else
 170                 color_format = GL_RGBA8;
 171
 172         fb = nouveau_framebuffer_dri_new(visual);
 173         if (!fb)
 174                 return GL_FALSE;
 175
 176         /* Front buffer. */
 177         rb = nouveau_renderbuffer_dri_new(color_format, drawable);
 178         _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, rb);
 179
 180         /* Back buffer */
 181         if (visual->doubleBufferMode) {
 182                 rb = nouveau_renderbuffer_dri_new(color_format, drawable);
 183                 _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, rb);
 184         }
 185
 186         /* Depth/stencil buffer. */
 187         if (visual->depthBits == 24 && visual->stencilBits == 8) {
 188                 rb = nouveau_renderbuffer_dri_new(GL_DEPTH24_STENCIL8_EXT, drawable);
 189                 _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
 190                 _mesa_add_renderbuffer(fb, BUFFER_STENCIL, rb);
 191
 192         } else if (visual->depthBits == 24) {
 193                 rb = nouveau_renderbuffer_dri_new(GL_DEPTH_COMPONENT24, drawable);
 194                 _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
 195
 196         } else if (visual->depthBits == 16) {
 197                 rb = nouveau_renderbuffer_dri_new(GL_DEPTH_COMPONENT16, drawable);
 198                 _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
 199         }
 200
 201         /* Software renderbuffers. */
 202         _mesa_add_soft_renderbuffers(fb, GL_FALSE, GL_FALSE, GL_FALSE,
 203                                      visual->accumRedBits > 0,
 204                                      GL_FALSE, GL_FALSE);
 205
 206         drawable->driverPrivate = fb;
 207
 208         return GL_TRUE;
 209 }
 210
 211 static void
 212 nouveau_destroy_buffer(__DRIdrawable *drawable)
 213 {
 214         _mesa_reference_framebuffer(
 215                 (struct gl_framebuffer **)&drawable->driverPrivate, NULL);
 216 }
 217
 218 static void
 219 nouveau_drawable_flush(__DRIdrawable *draw)
 220 {
 221 }
 222
 223 static const struct __DRI2flushExtensionRec nouveau_flush_extension = {
 224     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 225     nouveau_drawable_flush,
 226     dri2InvalidateDrawable,
 227 };
 228
 229 static const __DRIextension *nouveau_screen_extensions[] = {
 230     &nouveau_flush_extension.base,
 231     NULL
 232 };
 233
 234 const struct __DriverAPIRec driDriverAPI = {
 235         .InitScreen2     = nouveau_init_screen2,
 236         .DestroyScreen   = nouveau_destroy_screen,
 237         .CreateBuffer    = nouveau_create_buffer,
 238         .DestroyBuffer   = nouveau_destroy_buffer,
 239         .CreateContext   = nouveau_context_create,
 240         .DestroyContext  = nouveau_context_destroy,
 241         .MakeCurrent     = nouveau_context_make_current,
 242         .UnbindContext   = nouveau_context_unbind,
 243 };
 244
 245 /* This is the table of extensions that the loader will dlsym() for. */
 246 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 247         &driCoreExtension.base,
 248         &driDRI2Extension.base,
 249         NULL
 250 };