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#include "intel_fbo.h"
11
12#define FILE_DEBUG_FLAG DEBUG_TEXTURE
13
14static struct gl_texture_image *
15intelNewTextureImage(struct gl_context * ctx)
16{
17   DBG("%s\n", __func__);
18   (void) ctx;
19   return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
20}
21
22static void
23intelDeleteTextureImage(struct gl_context * ctx, struct gl_texture_image *img)
24{
25   /* nothing special (yet) for intel_texture_image */
26   _mesa_delete_texture_image(ctx, img);
27}
28
29
30static struct gl_texture_object *
31intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
32{
33   struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
34
35   (void) ctx;
36
37   DBG("%s\n", __func__);
38
39   if (obj == NULL)
40      return NULL;
41
42   _mesa_initialize_texture_object(ctx, &obj->base, name, target);
43
44   obj->needs_validate = true;
45
46   return &obj->base;
47}
48
49static void
50intelDeleteTextureObject(struct gl_context *ctx,
51			 struct gl_texture_object *texObj)
52{
53   struct intel_texture_object *intelObj = intel_texture_object(texObj);
54
55   intel_miptree_release(&intelObj->mt);
56   _mesa_delete_texture_object(ctx, texObj);
57}
58
59static GLboolean
60intel_alloc_texture_image_buffer(struct gl_context *ctx,
61				 struct gl_texture_image *image)
62{
63   struct intel_context *intel = intel_context(ctx);
64   struct intel_texture_image *intel_image = intel_texture_image(image);
65   struct gl_texture_object *texobj = image->TexObject;
66   struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
67
68   assert(image->Border == 0);
69
70   /* Because the driver uses AllocTextureImageBuffer() internally, it may end
71    * up mismatched with FreeTextureImageBuffer(), but that is safe to call
72    * multiple times.
73    */
74   ctx->Driver.FreeTextureImageBuffer(ctx, image);
75
76   if (!_swrast_init_texture_image(image))
77      return false;
78
79   if (intel_texobj->mt &&
80       intel_miptree_match_image(intel_texobj->mt, image)) {
81      intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
82      DBG("%s: alloc obj %p level %d %dx%dx%d using object's miptree %p\n",
83          __func__, texobj, image->Level,
84          image->Width, image->Height, image->Depth, intel_texobj->mt);
85   } else {
86      intel_image->mt = intel_miptree_create_for_teximage(intel, intel_texobj,
87                                                          intel_image,
88                                                          false);
89
90      /* Even if the object currently has a mipmap tree associated
91       * with it, this one is a more likely candidate to represent the
92       * whole object since our level didn't fit what was there
93       * before, and any lower levels would fit into our miptree.
94       */
95      intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
96
97      DBG("%s: alloc obj %p level %d %dx%dx%d using new miptree %p\n",
98          __func__, texobj, image->Level,
99          image->Width, image->Height, image->Depth, intel_image->mt);
100   }
101
102   intel_texobj->needs_validate = true;
103
104   return true;
105}
106
107static void
108intel_free_texture_image_buffer(struct gl_context * ctx,
109				struct gl_texture_image *texImage)
110{
111   struct intel_texture_image *intelImage = intel_texture_image(texImage);
112
113   DBG("%s\n", __func__);
114
115   intel_miptree_release(&intelImage->mt);
116
117   _swrast_free_texture_image_buffer(ctx, texImage);
118}
119
120/**
121 * Map texture memory/buffer into user space.
122 * Note: the region of interest parameters are ignored here.
123 * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
124 * \param mapOut  returns start of mapping of region of interest
125 * \param rowStrideOut  returns row stride in bytes
126 */
127static void
128intel_map_texture_image(struct gl_context *ctx,
129			struct gl_texture_image *tex_image,
130			GLuint slice,
131			GLuint x, GLuint y, GLuint w, GLuint h,
132			GLbitfield mode,
133			GLubyte **map,
134			GLint *stride)
135{
136   struct intel_context *intel = intel_context(ctx);
137   struct intel_texture_image *intel_image = intel_texture_image(tex_image);
138   struct intel_mipmap_tree *mt = intel_image->mt;
139
140   /* Our texture data is always stored in a miptree. */
141   assert(mt);
142
143   /* intel_miptree_map operates on a unified "slice" number that references the
144    * cube face, since it's all just slices to the miptree code.
145    */
146   if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
147      slice = tex_image->Face;
148
149   intel_miptree_map(intel, mt, tex_image->Level, slice, x, y, w, h, mode,
150		     (void **)map, stride);
151}
152
153static void
154intel_unmap_texture_image(struct gl_context *ctx,
155			  struct gl_texture_image *tex_image, GLuint slice)
156{
157   struct intel_context *intel = intel_context(ctx);
158   struct intel_texture_image *intel_image = intel_texture_image(tex_image);
159   struct intel_mipmap_tree *mt = intel_image->mt;
160
161   if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
162      slice = tex_image->Face;
163
164   intel_miptree_unmap(intel, mt, tex_image->Level, slice);
165}
166
167void
168intelInitTextureFuncs(struct dd_function_table *functions)
169{
170   functions->NewTextureObject = intelNewTextureObject;
171   functions->NewTextureImage = intelNewTextureImage;
172   functions->DeleteTextureImage = intelDeleteTextureImage;
173   functions->DeleteTexture = intelDeleteTextureObject;
174   functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
175   functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
176   functions->MapTextureImage = intel_map_texture_image;
177   functions->UnmapTextureImage = intel_unmap_texture_image;
178}
179