src/mesa/drivers/dri/nouveau/nouveau_fbo.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_fbo.h"
  29 #include "nouveau_context.h"
  30 #include "nouveau_texture.h"
  31
  32 #include "main/framebuffer.h"
  33 #include "main/renderbuffer.h"
  34 #include "main/fbobject.h"
  35 #include "main/mfeatures.h"
  36
  37 static GLboolean
  38 set_renderbuffer_format(struct gl_renderbuffer *rb, GLenum internalFormat)
  39 {
  40         struct nouveau_surface *s = &to_nouveau_renderbuffer(rb)->surface;
  41
  42         rb->InternalFormat  = internalFormat;
  43
  44         switch (internalFormat) {
  45         case GL_RGB:
  46         case GL_RGB8:
  47                 rb->_BaseFormat  = GL_RGB;
  48                 rb->Format = MESA_FORMAT_XRGB8888;
  49                 s->cpp = 4;
  50                 break;
  51         case GL_RGBA:
  52         case GL_RGBA8:
  53                 rb->_BaseFormat  = GL_RGBA;
  54                 rb->Format = MESA_FORMAT_ARGB8888;
  55                 s->cpp = 4;
  56                 break;
  57         case GL_RGB5:
  58                 rb->_BaseFormat  = GL_RGB;
  59                 rb->Format = MESA_FORMAT_RGB565;
  60                 s->cpp = 2;
  61                 break;
  62         case GL_DEPTH_COMPONENT16:
  63                 rb->_BaseFormat  = GL_DEPTH_COMPONENT;
  64                 rb->Format = MESA_FORMAT_Z16;
  65                 s->cpp = 2;
  66                 break;
  67         case GL_DEPTH_COMPONENT:
  68         case GL_DEPTH_COMPONENT24:
  69         case GL_STENCIL_INDEX8_EXT:
  70         case GL_DEPTH24_STENCIL8_EXT:
  71                 rb->_BaseFormat  = GL_DEPTH_STENCIL;
  72                 rb->Format = MESA_FORMAT_Z24_S8;
  73                 s->cpp = 4;
  74                 break;
  75         default:
  76                 return GL_FALSE;
  77         }
  78
  79         s->format = rb->Format;
  80
  81         return GL_TRUE;
  82 }
  83
  84 static GLboolean
  85 nouveau_renderbuffer_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
  86                              GLenum internalFormat,
  87                              GLuint width, GLuint height)
  88 {
  89         struct nouveau_surface *s = &to_nouveau_renderbuffer(rb)->surface;
  90
  91         if (!set_renderbuffer_format(rb, internalFormat))
  92                 return GL_FALSE;
  93
  94         rb->Width = width;
  95         rb->Height = height;
  96
  97         nouveau_surface_alloc(ctx, s, TILED, NOUVEAU_BO_VRAM | NOUVEAU_BO_MAP,
  98                               rb->Format, width, height);
  99
 100         context_dirty(ctx, FRAMEBUFFER);
 101         return GL_TRUE;
 102 }
 103
 104 static void
 105 nouveau_renderbuffer_del(struct gl_context *ctx, struct gl_renderbuffer *rb)
 106 {
 107         struct nouveau_surface *s = &to_nouveau_renderbuffer(rb)->surface;
 108
 109         nouveau_surface_ref(NULL, s);
 110         _mesa_delete_renderbuffer(ctx, rb);
 111 }
 112
 113 static struct gl_renderbuffer *
 114 nouveau_renderbuffer_new(struct gl_context *ctx, GLuint name)
 115 {
 116         struct gl_renderbuffer *rb;
 117
 118         rb = (struct gl_renderbuffer *)
 119                 CALLOC_STRUCT(nouveau_renderbuffer);
 120         if (!rb)
 121                 return NULL;
 122
 123         _mesa_init_renderbuffer(rb, name);
 124
 125         rb->AllocStorage = nouveau_renderbuffer_storage;
 126         rb->Delete = nouveau_renderbuffer_del;
 127
 128         return rb;
 129 }
 130
 131 static void
 132 nouveau_renderbuffer_map(struct gl_context *ctx,
 133                          struct gl_renderbuffer *rb,
 134                          GLuint x, GLuint y, GLuint w, GLuint h,
 135                          GLbitfield mode,
 136                          GLubyte **out_map,
 137                          GLint *out_stride)
 138 {
 139         struct nouveau_surface *s = &to_nouveau_renderbuffer(rb)->surface;
 140         GLubyte *map;
 141         int stride;
 142         int flags = 0;
 143
 144         if (mode & GL_MAP_READ_BIT)
 145                 flags |= NOUVEAU_BO_RD;
 146         if (mode & GL_MAP_WRITE_BIT)
 147                 flags |= NOUVEAU_BO_WR;
 148
 149         nouveau_bo_map(s->bo, flags, context_client(ctx));
 150
 151         map = s->bo->map;
 152         stride = s->pitch;
 153
 154         if (rb->Name == 0) {
 155                 map += stride * (rb->Height - 1);
 156                 stride = -stride;
 157         }
 158
 159         map += x * s->cpp;
 160         map += (int)y * stride;
 161
 162         *out_map = map;
 163         *out_stride = stride;
 164 }
 165
 166 static void
 167 nouveau_renderbuffer_unmap(struct gl_context *ctx,
 168                            struct gl_renderbuffer *rb)
 169 {
 170 }
 171
 172 static GLboolean
 173 nouveau_renderbuffer_dri_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
 174                                  GLenum internalFormat,
 175                                  GLuint width, GLuint height)
 176 {
 177         if (!set_renderbuffer_format(rb, internalFormat))
 178                 return GL_FALSE;
 179
 180         rb->Width = width;
 181         rb->Height = height;
 182
 183         return GL_TRUE;
 184 }
 185
 186 struct gl_renderbuffer *
 187 nouveau_renderbuffer_dri_new(GLenum format, __DRIdrawable *drawable)
 188 {
 189         struct gl_renderbuffer *rb;
 190
 191         rb = nouveau_renderbuffer_new(NULL, 0);
 192         if (!rb)
 193                 return NULL;
 194
 195         rb->AllocStorage = nouveau_renderbuffer_dri_storage;
 196
 197         if (!set_renderbuffer_format(rb, format)) {
 198                 nouveau_renderbuffer_del(NULL, rb);
 199                 return NULL;
 200         }
 201
 202         return rb;
 203 }
 204
 205 static struct gl_framebuffer *
 206 nouveau_framebuffer_new(struct gl_context *ctx, GLuint name)
 207 {
 208         struct nouveau_framebuffer *nfb;
 209
 210         nfb = CALLOC_STRUCT(nouveau_framebuffer);
 211         if (!nfb)
 212                 return NULL;
 213
 214         _mesa_initialize_user_framebuffer(&nfb->base, name);
 215
 216         return &nfb->base;
 217 }
 218
 219 struct gl_framebuffer *
 220 nouveau_framebuffer_dri_new(const struct gl_config *visual)
 221 {
 222         struct nouveau_framebuffer *nfb;
 223
 224         nfb = CALLOC_STRUCT(nouveau_framebuffer);
 225         if (!nfb)
 226                 return NULL;
 227
 228         _mesa_initialize_window_framebuffer(&nfb->base, visual);
 229         nfb->need_front = !visual->doubleBufferMode;
 230
 231         return &nfb->base;
 232 }
 233
 234 static void
 235 nouveau_bind_framebuffer(struct gl_context *ctx, GLenum target,
 236                          struct gl_framebuffer *dfb,
 237                          struct gl_framebuffer *rfb)
 238 {
 239         context_dirty(ctx, FRAMEBUFFER);
 240 }
 241
 242 static void
 243 nouveau_framebuffer_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
 244                                  GLenum attachment, struct gl_renderbuffer *rb)
 245 {
 246         _mesa_framebuffer_renderbuffer(ctx, fb, attachment, rb);
 247
 248         context_dirty(ctx, FRAMEBUFFER);
 249 }
 250
 251 static GLenum
 252 get_tex_format(struct gl_texture_image *ti)
 253 {
 254         switch (ti->TexFormat) {
 255         case MESA_FORMAT_ARGB8888:
 256                 return GL_RGBA8;
 257         case MESA_FORMAT_XRGB8888:
 258                 return GL_RGB8;
 259         case MESA_FORMAT_RGB565:
 260                 return GL_RGB5;
 261         default:
 262                 return GL_NONE;
 263         }
 264 }
 265
 266 static void
 267 nouveau_render_texture(struct gl_context *ctx, struct gl_framebuffer *fb,
 268                        struct gl_renderbuffer_attachment *att)
 269 {
 270         struct gl_renderbuffer *rb = att->Renderbuffer;
 271         struct gl_texture_image *ti =
 272                 att->Texture->Image[att->CubeMapFace][att->TextureLevel];
 273
 274         /* Allocate a renderbuffer object for the texture if we
 275          * haven't already done so. */
 276         if (!rb) {
 277                 rb = nouveau_renderbuffer_new(ctx, ~0);
 278                 assert(rb);
 279
 280                 rb->AllocStorage = NULL;
 281                 _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
 282         }
 283
 284         /* Update the renderbuffer fields from the texture. */
 285         set_renderbuffer_format(rb, get_tex_format(ti));
 286         rb->Width = ti->Width;
 287         rb->Height = ti->Height;
 288         nouveau_surface_ref(&to_nouveau_teximage(ti)->surface,
 289                             &to_nouveau_renderbuffer(rb)->surface);
 290
 291         context_dirty(ctx, FRAMEBUFFER);
 292 }
 293
 294 static void
 295 nouveau_finish_render_texture(struct gl_context *ctx,
 296                               struct gl_renderbuffer_attachment *att)
 297 {
 298         texture_dirty(att->Texture);
 299 }
 300
 301 void
 302 nouveau_fbo_functions_init(struct dd_function_table *functions)
 303 {
 304 #if FEATURE_EXT_framebuffer_object
 305         functions->NewFramebuffer = nouveau_framebuffer_new;
 306         functions->NewRenderbuffer = nouveau_renderbuffer_new;
 307         functions->MapRenderbuffer = nouveau_renderbuffer_map;
 308         functions->UnmapRenderbuffer = nouveau_renderbuffer_unmap;
 309         functions->BindFramebuffer = nouveau_bind_framebuffer;
 310         functions->FramebufferRenderbuffer = nouveau_framebuffer_renderbuffer;
 311         functions->RenderTexture = nouveau_render_texture;
 312         functions->FinishRenderTexture = nouveau_finish_render_texture;
 313 #endif
 314 }