intel_tex.c revision 0bb29949ba8a9e5a15dc0640dbb0a4e7990a1d57 
1#include "swrast/swrast.h"
2#include "main/renderbuffer.h"
3#include "main/texobj.h"
4#include "main/teximage.h"
5#include "main/mipmap.h"
6#include "drivers/common/meta.h"
7#include "intel_context.h"
8#include "intel_mipmap_tree.h"
9#include "intel_tex.h"
10
11#define FILE_DEBUG_FLAG DEBUG_TEXTURE
12
13static struct gl_texture_image *
14intelNewTextureImage(struct gl_context * ctx)
15{
16   DBG("%s\n", __FUNCTION__);
17   (void) ctx;
18   return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
19}
20
21
22static struct gl_texture_object *
23intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
24{
25   struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
26
27   DBG("%s\n", __FUNCTION__);
28   _mesa_initialize_texture_object(&obj->base, name, target);
29
30   return &obj->base;
31}
32
33static void
34intelDeleteTextureObject(struct gl_context *ctx,
35			 struct gl_texture_object *texObj)
36{
37   struct intel_context *intel = intel_context(ctx);
38   struct intel_texture_object *intelObj = intel_texture_object(texObj);
39
40   if (intelObj->mt)
41      intel_miptree_release(intel, &intelObj->mt);
42
43   _mesa_delete_texture_object(ctx, texObj);
44}
45
46
47static void
48intelFreeTextureImageData(struct gl_context * ctx, struct gl_texture_image *texImage)
49{
50   struct intel_context *intel = intel_context(ctx);
51   struct intel_texture_image *intelImage = intel_texture_image(texImage);
52
53   DBG("%s\n", __FUNCTION__);
54
55   if (intelImage->mt) {
56      intel_miptree_release(intel, &intelImage->mt);
57   }
58
59   if (texImage->Data) {
60      _mesa_free_texmemory(texImage->Data);
61      texImage->Data = NULL;
62   }
63
64   if (intelImage->depth_rb) {
65      _mesa_reference_renderbuffer(&intelImage->depth_rb, NULL);
66   }
67
68   if (intelImage->stencil_rb) {
69      _mesa_reference_renderbuffer(&intelImage->stencil_rb, NULL);
70   }
71}
72
73/**
74 * Called via ctx->Driver.GenerateMipmap()
75 * This is basically a wrapper for _mesa_meta_GenerateMipmap() which checks
76 * if we'll be using software mipmap generation.  In that case, we need to
77 * map/unmap the base level texture image.
78 */
79static void
80intelGenerateMipmap(struct gl_context *ctx, GLenum target,
81                    struct gl_texture_object *texObj)
82{
83   if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {
84      /* sw path: need to map texture images */
85      struct intel_context *intel = intel_context(ctx);
86      struct intel_texture_object *intelObj = intel_texture_object(texObj);
87      struct gl_texture_image *first_image = texObj->Image[0][texObj->BaseLevel];
88
89      fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
90
91      intel_tex_map_level_images(intel, intelObj, texObj->BaseLevel);
92      _mesa_generate_mipmap(ctx, target, texObj);
93      intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
94
95      if (!_mesa_is_format_compressed(first_image->TexFormat)) {
96         GLuint nr_faces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
97         GLuint face, i;
98         for (face = 0; face < nr_faces; face++) {
99            for (i = texObj->BaseLevel + 1; i < texObj->MaxLevel; i++) {
100               struct intel_texture_image *intelImage =
101                  intel_texture_image(texObj->Image[face][i]);
102               if (!intelImage)
103                  break;
104               /* Unreference the miptree to signal that the new Data is a
105                * bare pointer from mesa.
106                */
107               intel_miptree_release(intel, &intelImage->mt);
108            }
109         }
110      }
111   }
112   else {
113      _mesa_meta_GenerateMipmap(ctx, target, texObj);
114   }
115}
116
117
118void
119intelInitTextureFuncs(struct dd_function_table *functions)
120{
121   functions->GenerateMipmap = intelGenerateMipmap;
122
123   functions->NewTextureObject = intelNewTextureObject;
124   functions->NewTextureImage = intelNewTextureImage;
125   functions->DeleteTexture = intelDeleteTextureObject;
126   functions->FreeTextureImageBuffer = intelFreeTextureImageData;
127}
128