intel_tex.c revision 5401590815b0ef095e7881bbabce233bab07c1e6 
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
48intel_free_texture_image_buffer(struct gl_context * ctx,
49				struct gl_texture_image *texImage)
50{
51   struct intel_context *intel = intel_context(ctx);
52   struct intel_texture_image *intelImage = intel_texture_image(texImage);
53
54   DBG("%s\n", __FUNCTION__);
55
56   if (intelImage->mt) {
57      intel_miptree_release(intel, &intelImage->mt);
58   }
59
60   if (texImage->Data) {
61      _mesa_free_texmemory(texImage->Data);
62      texImage->Data = NULL;
63   }
64
65   if (intelImage->depth_rb) {
66      _mesa_reference_renderbuffer(&intelImage->depth_rb, NULL);
67   }
68
69   if (intelImage->stencil_rb) {
70      _mesa_reference_renderbuffer(&intelImage->stencil_rb, NULL);
71   }
72}
73
74/**
75 * Called via ctx->Driver.GenerateMipmap()
76 * This is basically a wrapper for _mesa_meta_GenerateMipmap() which checks
77 * if we'll be using software mipmap generation.  In that case, we need to
78 * map/unmap the base level texture image.
79 */
80static void
81intelGenerateMipmap(struct gl_context *ctx, GLenum target,
82                    struct gl_texture_object *texObj)
83{
84   if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {
85      /* sw path: need to map texture images */
86      struct intel_context *intel = intel_context(ctx);
87      struct intel_texture_object *intelObj = intel_texture_object(texObj);
88      struct gl_texture_image *first_image = texObj->Image[0][texObj->BaseLevel];
89
90      fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
91
92      intel_tex_map_level_images(intel, intelObj, texObj->BaseLevel);
93      _mesa_generate_mipmap(ctx, target, texObj);
94      intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
95
96      if (!_mesa_is_format_compressed(first_image->TexFormat)) {
97         GLuint nr_faces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
98         GLuint face, i;
99         for (face = 0; face < nr_faces; face++) {
100            for (i = texObj->BaseLevel + 1; i < texObj->MaxLevel; i++) {
101               struct intel_texture_image *intelImage =
102                  intel_texture_image(texObj->Image[face][i]);
103               if (!intelImage)
104                  break;
105               /* Unreference the miptree to signal that the new Data is a
106                * bare pointer from mesa.
107                */
108               intel_miptree_release(intel, &intelImage->mt);
109            }
110         }
111      }
112   }
113   else {
114      _mesa_meta_GenerateMipmap(ctx, target, texObj);
115   }
116}
117
118
119void
120intelInitTextureFuncs(struct dd_function_table *functions)
121{
122   functions->GenerateMipmap = intelGenerateMipmap;
123
124   functions->NewTextureObject = intelNewTextureObject;
125   functions->NewTextureImage = intelNewTextureImage;
126   functions->DeleteTexture = intelDeleteTextureObject;
127   functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
128}
129