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  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. }
  152.