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

   1 /*
   2  * Copyright (C) 2009-2010 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 "main/bufferobj.h"
  28 #include "nouveau_driver.h"
  29 #include "nouveau_array.h"
  30 #include "nouveau_bufferobj.h"
  31 #include "nouveau_context.h"
  32
  33 #define EXTRACT(in_t, out_t) extract_func_##in_t##_to_##out_t
  34
  35 #define EXTRACT_FUNC(in_t, out_t, k)                    \
  36 static out_t EXTRACT(in_t, out_t)                       \
  37 (struct nouveau_array *a, int i, int j) {               \
  38         in_t x = ((in_t *)(a->buf + i * a->stride))[j]; \
  39                                                         \
  40         return (out_t)x / (k);                          \
  41 }
  42
  43 EXTRACT_FUNC(GLchar, unsigned, 1);
  44 EXTRACT_FUNC(GLchar, float, SCHAR_MAX);
  45 EXTRACT_FUNC(GLubyte, unsigned, 1);
  46 EXTRACT_FUNC(GLubyte, float, UCHAR_MAX);
  47 EXTRACT_FUNC(GLshort, unsigned, 1);
  48 EXTRACT_FUNC(GLshort, float, SHRT_MAX);
  49 EXTRACT_FUNC(GLushort, unsigned, 1);
  50 EXTRACT_FUNC(GLushort, float, USHRT_MAX);
  51 EXTRACT_FUNC(GLint, unsigned, 1);
  52 EXTRACT_FUNC(GLint, float, INT_MAX);
  53 EXTRACT_FUNC(GLuint, unsigned, 1);
  54 EXTRACT_FUNC(GLuint, float, UINT_MAX);
  55 EXTRACT_FUNC(GLfloat, unsigned, 1.0 / UINT_MAX);
  56 EXTRACT_FUNC(GLfloat, float, 1);
  57
  58 #undef EXTRACT_FUNC
  59
  60 static void
  61 get_array_extract(struct nouveau_array *a, extract_u_t *extract_u,
  62                   extract_f_t *extract_f)
  63 {
  64         switch (a->type) {
  65         case GL_BYTE:
  66                 *extract_u = EXTRACT(GLchar, unsigned);
  67                 *extract_f = EXTRACT(GLchar, float);
  68                 break;
  69         case GL_UNSIGNED_BYTE:
  70                 *extract_u = EXTRACT(GLubyte, unsigned);
  71                 *extract_f = EXTRACT(GLubyte, float);
  72                 break;
  73         case GL_SHORT:
  74                 *extract_u = EXTRACT(GLshort, unsigned);
  75                 *extract_f = EXTRACT(GLshort, float);
  76                 break;
  77         case GL_UNSIGNED_SHORT:
  78                 *extract_u = EXTRACT(GLushort, unsigned);
  79                 *extract_f = EXTRACT(GLushort, float);
  80                 break;
  81         case GL_INT:
  82                 *extract_u = EXTRACT(GLint, unsigned);
  83                 *extract_f = EXTRACT(GLint, float);
  84                 break;
  85         case GL_UNSIGNED_INT:
  86                 *extract_u = EXTRACT(GLuint, unsigned);
  87                 *extract_f = EXTRACT(GLuint, float);
  88                 break;
  89         case GL_FLOAT:
  90                 *extract_u = EXTRACT(GLfloat, unsigned);
  91                 *extract_f = EXTRACT(GLfloat, float);
  92                 break;
  93         default:
  94                 assert(0);
  95         }
  96 }
  97 #undef EXTRACT
  98
  99 void
 100 nouveau_init_array(struct nouveau_array *a, int attr, int stride,
 101                    int fields, int type, struct gl_buffer_object *obj,
 102                    const void *ptr, GLboolean map, struct gl_context *ctx)
 103 {
 104         struct nouveau_client *client = context_client(ctx);
 105
 106         a->attr = attr;
 107         a->stride = stride;
 108         a->fields = fields;
 109         a->type = type;
 110         a->buf = NULL;
 111
 112         if (obj) {
 113                 if (nouveau_bufferobj_hw(obj)) {
 114                         struct nouveau_bufferobj *nbo =
 115                                 to_nouveau_bufferobj(obj);
 116
 117                         nouveau_bo_ref(nbo->bo, &a->bo);
 118                         a->offset = (intptr_t)ptr;
 119
 120                         if (map) {
 121                                 nouveau_bo_map(a->bo, NOUVEAU_BO_RD, client);
 122                                 a->buf = a->bo->map + a->offset;
 123                         }
 124
 125                 } else {
 126                         nouveau_bo_ref(NULL, &a->bo);
 127                         a->offset = 0;
 128
 129                         if (map)
 130                                 a->buf = ADD_POINTERS(
 131                                         nouveau_bufferobj_sys(obj), ptr);
 132                 }
 133         }
 134
 135         if (a->buf)
 136                 get_array_extract(a, &a->extract_u, &a->extract_f);
 137 }
 138
 139 void
 140 nouveau_deinit_array(struct nouveau_array *a)
 141 {
 142         a->buf = NULL;
 143         a->fields = 0;
 144 }
 145
 146 void
 147 nouveau_cleanup_array(struct nouveau_array *a)
 148 {
 149         nouveau_deinit_array(a);
 150         nouveau_bo_ref(NULL, &a->bo);
 151 }