intel_tex.c revision 10e418f3815d690b2526e835bc7eb421b6be7050 
1#include "swrast/swrast.h"
2#include "main/texobj.h"
3#include "main/teximage.h"
4#include "main/mipmap.h"
5#include "drivers/common/meta.h"
6#include "intel_context.h"
7#include "intel_mipmap_tree.h"
8#include "intel_tex.h"
9
10#define FILE_DEBUG_FLAG DEBUG_TEXTURE
11
12static struct gl_texture_image *
13intelNewTextureImage(struct gl_context * ctx)
14{
15   DBG("%s\n", __FUNCTION__);
16   (void) ctx;
17   return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
18}
19
20
21static struct gl_texture_object *
22intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
23{
24   struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
25
26   DBG("%s\n", __FUNCTION__);
27   _mesa_initialize_texture_object(&obj->base, name, target);
28
29   return &obj->base;
30}
31
32static void
33intelDeleteTextureObject(struct gl_context *ctx,
34			 struct gl_texture_object *texObj)
35{
36   struct intel_context *intel = intel_context(ctx);
37   struct intel_texture_object *intelObj = intel_texture_object(texObj);
38
39   if (intelObj->mt)
40      intel_miptree_release(intel, &intelObj->mt);
41
42   _mesa_delete_texture_object(ctx, texObj);
43}
44
45
46static void
47intelFreeTextureImageData(struct gl_context * ctx, struct gl_texture_image *texImage)
48{
49   struct intel_context *intel = intel_context(ctx);
50   struct intel_texture_image *intelImage = intel_texture_image(texImage);
51
52   DBG("%s\n", __FUNCTION__);
53
54   if (intelImage->mt) {
55      intel_miptree_release(intel, &intelImage->mt);
56   }
57
58   if (texImage->Data) {
59      _mesa_free_texmemory(texImage->Data);
60      texImage->Data = NULL;
61   }
62}
63
64/**
65 * Called via ctx->Driver.GenerateMipmap()
66 * This is basically a wrapper for _mesa_meta_GenerateMipmap() which checks
67 * if we'll be using software mipmap generation.  In that case, we need to
68 * map/unmap the base level texture image.
69 */
70static void
71intelGenerateMipmap(struct gl_context *ctx, GLenum target,
72                    struct gl_texture_object *texObj)
73{
74   if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {
75      /* sw path: need to map texture images */
76      struct intel_context *intel = intel_context(ctx);
77      struct intel_texture_object *intelObj = intel_texture_object(texObj);
78      struct gl_texture_image *first_image = texObj->Image[0][texObj->BaseLevel];
79
80      fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
81
82      intel_tex_map_level_images(intel, intelObj, texObj->BaseLevel);
83      _mesa_generate_mipmap(ctx, target, texObj);
84      intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
85
86      if (!_mesa_is_format_compressed(first_image->TexFormat)) {
87         GLuint nr_faces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
88         GLuint face, i;
89         /* Update the level information in our private data in the new images,
90          * since it didn't get set as part of a normal TexImage path.
91          */
92         for (face = 0; face < nr_faces; face++) {
93            for (i = texObj->BaseLevel + 1; i < texObj->MaxLevel; i++) {
94               struct intel_texture_image *intelImage =
95                  intel_texture_image(texObj->Image[face][i]);
96               if (!intelImage)
97                  break;
98               intelImage->level = i;
99               intelImage->face = face;
100               /* Unreference the miptree to signal that the new Data is a
101                * bare pointer from mesa.
102                */
103               intel_miptree_release(intel, &intelImage->mt);
104            }
105         }
106      }
107   }
108   else {
109      _mesa_meta_GenerateMipmap(ctx, target, texObj);
110   }
111}
112
113
114void
115intelInitTextureFuncs(struct dd_function_table *functions)
116{
117   functions->GenerateMipmap = intelGenerateMipmap;
118
119   functions->NewTextureObject = intelNewTextureObject;
120   functions->NewTextureImage = intelNewTextureImage;
121   functions->DeleteTexture = intelDeleteTextureObject;
122   functions->FreeTexImageData = intelFreeTextureImageData;
123}
124