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 "util/u_memory.h"
8 #include "intel_context.h"
9 #include "intel_mipmap_tree.h"
10 #include "intel_tex.h"
11 #include "intel_fbo.h"
12
13 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
14
15 static struct gl_texture_image *
intelNewTextureImage(struct gl_context * ctx)16 intelNewTextureImage(struct gl_context * ctx)
17 {
18 DBG("%s\n", __func__);
19 (void) ctx;
20 return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
21 }
22
23 static void
intelDeleteTextureImage(struct gl_context * ctx,struct gl_texture_image * img)24 intelDeleteTextureImage(struct gl_context * ctx, struct gl_texture_image *img)
25 {
26 /* nothing special (yet) for intel_texture_image */
27 _mesa_delete_texture_image(ctx, img);
28 }
29
30
31 static struct gl_texture_object *
intelNewTextureObject(struct gl_context * ctx,GLuint name,GLenum target)32 intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
33 {
34 struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
35
36 (void) ctx;
37
38 DBG("%s\n", __func__);
39
40 if (obj == NULL)
41 return NULL;
42
43 _mesa_initialize_texture_object(ctx, &obj->base, name, target);
44
45 obj->needs_validate = true;
46
47 return &obj->base;
48 }
49
50 static void
intelDeleteTextureObject(struct gl_context * ctx,struct gl_texture_object * texObj)51 intelDeleteTextureObject(struct gl_context *ctx,
52 struct gl_texture_object *texObj)
53 {
54 struct intel_texture_object *intelObj = intel_texture_object(texObj);
55
56 intel_miptree_release(&intelObj->mt);
57 _mesa_delete_texture_object(ctx, texObj);
58 }
59
60 static GLboolean
intel_alloc_texture_image_buffer(struct gl_context * ctx,struct gl_texture_image * image)61 intel_alloc_texture_image_buffer(struct gl_context *ctx,
62 struct gl_texture_image *image)
63 {
64 struct intel_context *intel = intel_context(ctx);
65 struct intel_texture_image *intel_image = intel_texture_image(image);
66 struct gl_texture_object *texobj = image->TexObject;
67 struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
68
69 assert(image->Border == 0);
70
71 /* Because the driver uses AllocTextureImageBuffer() internally, it may end
72 * up mismatched with FreeTextureImageBuffer(), but that is safe to call
73 * multiple times.
74 */
75 ctx->Driver.FreeTextureImageBuffer(ctx, image);
76
77 if (!_swrast_init_texture_image(image))
78 return false;
79
80 if (intel_texobj->mt &&
81 intel_miptree_match_image(intel_texobj->mt, image)) {
82 intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
83 DBG("%s: alloc obj %p level %d %dx%dx%d using object's miptree %p\n",
84 __func__, texobj, image->Level,
85 image->Width, image->Height, image->Depth, intel_texobj->mt);
86 } else {
87 intel_image->mt = intel_miptree_create_for_teximage(intel, intel_texobj,
88 intel_image,
89 false);
90
91 /* Even if the object currently has a mipmap tree associated
92 * with it, this one is a more likely candidate to represent the
93 * whole object since our level didn't fit what was there
94 * before, and any lower levels would fit into our miptree.
95 */
96 intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
97
98 DBG("%s: alloc obj %p level %d %dx%dx%d using new miptree %p\n",
99 __func__, texobj, image->Level,
100 image->Width, image->Height, image->Depth, intel_image->mt);
101 }
102
103 intel_texobj->needs_validate = true;
104
105 return true;
106 }
107
108 static void
intel_free_texture_image_buffer(struct gl_context * ctx,struct gl_texture_image * texImage)109 intel_free_texture_image_buffer(struct gl_context * ctx,
110 struct gl_texture_image *texImage)
111 {
112 struct intel_texture_image *intelImage = intel_texture_image(texImage);
113
114 DBG("%s\n", __func__);
115
116 intel_miptree_release(&intelImage->mt);
117
118 _swrast_free_texture_image_buffer(ctx, texImage);
119 }
120
121 /**
122 * Map texture memory/buffer into user space.
123 * Note: the region of interest parameters are ignored here.
124 * \param mode bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
125 * \param mapOut returns start of mapping of region of interest
126 * \param rowStrideOut returns row stride in bytes
127 */
128 static void
intel_map_texture_image(struct gl_context * ctx,struct gl_texture_image * tex_image,GLuint slice,GLuint x,GLuint y,GLuint w,GLuint h,GLbitfield mode,GLubyte ** map,GLint * stride)129 intel_map_texture_image(struct gl_context *ctx,
130 struct gl_texture_image *tex_image,
131 GLuint slice,
132 GLuint x, GLuint y, GLuint w, GLuint h,
133 GLbitfield mode,
134 GLubyte **map,
135 GLint *stride)
136 {
137 struct intel_context *intel = intel_context(ctx);
138 struct intel_texture_image *intel_image = intel_texture_image(tex_image);
139 struct intel_mipmap_tree *mt = intel_image->mt;
140
141 /* Our texture data is always stored in a miptree. */
142 assert(mt);
143
144 /* intel_miptree_map operates on a unified "slice" number that references the
145 * cube face, since it's all just slices to the miptree code.
146 */
147 if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
148 slice = tex_image->Face;
149
150 intel_miptree_map(intel, mt, tex_image->Level, slice, x, y, w, h, mode,
151 (void **)map, stride);
152 }
153
154 static void
intel_unmap_texture_image(struct gl_context * ctx,struct gl_texture_image * tex_image,GLuint slice)155 intel_unmap_texture_image(struct gl_context *ctx,
156 struct gl_texture_image *tex_image, GLuint slice)
157 {
158 struct intel_context *intel = intel_context(ctx);
159 struct intel_texture_image *intel_image = intel_texture_image(tex_image);
160 struct intel_mipmap_tree *mt = intel_image->mt;
161
162 if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
163 slice = tex_image->Face;
164
165 intel_miptree_unmap(intel, mt, tex_image->Level, slice);
166 }
167
168 void
intelInitTextureFuncs(struct dd_function_table * functions)169 intelInitTextureFuncs(struct dd_function_table *functions)
170 {
171 functions->NewTextureObject = intelNewTextureObject;
172 functions->NewTextureImage = intelNewTextureImage;
173 functions->DeleteTextureImage = intelDeleteTextureImage;
174 functions->DeleteTexture = intelDeleteTextureObject;
175 functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
176 functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
177 functions->MapTextureImage = intel_map_texture_image;
178 functions->UnmapTextureImage = intel_unmap_texture_image;
179 }
180