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"
11 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
13 static struct gl_texture_image
*
14 intelNewTextureImage(struct gl_context
* ctx
)
16 DBG("%s\n", __FUNCTION__
);
18 return (struct gl_texture_image
*) CALLOC_STRUCT(intel_texture_image
);
22 intelDeleteTextureImage(struct gl_context
* ctx
, struct gl_texture_image
*img
)
24 /* nothing special (yet) for intel_texture_image */
25 _mesa_delete_texture_image(ctx
, img
);
29 static struct gl_texture_object
*
30 intelNewTextureObject(struct gl_context
* ctx
, GLuint name
, GLenum target
)
32 struct intel_texture_object
*obj
= CALLOC_STRUCT(intel_texture_object
);
36 DBG("%s\n", __FUNCTION__
);
37 _mesa_initialize_texture_object(&obj
->base
, name
, target
);
43 intelDeleteTextureObject(struct gl_context
*ctx
,
44 struct gl_texture_object
*texObj
)
46 struct intel_texture_object
*intelObj
= intel_texture_object(texObj
);
48 intel_miptree_release(&intelObj
->mt
);
49 _mesa_delete_texture_object(ctx
, texObj
);
53 intel_alloc_texture_image_buffer(struct gl_context
*ctx
,
54 struct gl_texture_image
*image
,
55 gl_format format
, GLsizei width
,
56 GLsizei height
, GLsizei depth
)
58 struct intel_context
*intel
= intel_context(ctx
);
59 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
60 struct gl_texture_object
*texobj
= image
->TexObject
;
61 struct intel_texture_object
*intel_texobj
= intel_texture_object(texobj
);
64 assert(image
->Border
== 0);
66 /* Because the driver uses AllocTextureImageBuffer() internally, it may end
67 * up mismatched with FreeTextureImageBuffer(), but that is safe to call
70 ctx
->Driver
.FreeTextureImageBuffer(ctx
, image
);
72 /* Allocate the swrast_texture_image::ImageOffsets array now */
73 switch (texobj
->Target
) {
75 case GL_TEXTURE_2D_ARRAY
:
76 slices
= image
->Depth
;
78 case GL_TEXTURE_1D_ARRAY
:
79 slices
= image
->Height
;
84 assert(!intel_image
->base
.ImageOffsets
);
85 intel_image
->base
.ImageOffsets
= malloc(slices
* sizeof(GLuint
));
87 if (intel_texobj
->mt
&&
88 intel_miptree_match_image(intel_texobj
->mt
, image
)) {
89 intel_miptree_reference(&intel_image
->mt
, intel_texobj
->mt
);
90 DBG("%s: alloc obj %p level %d %dx%dx%d using object's miptree %p\n",
91 __FUNCTION__
, texobj
, image
->Level
,
92 width
, height
, depth
, intel_texobj
->mt
);
94 intel_image
->mt
= intel_miptree_create_for_teximage(intel
, intel_texobj
,
98 /* Even if the object currently has a mipmap tree associated
99 * with it, this one is a more likely candidate to represent the
100 * whole object since our level didn't fit what was there
101 * before, and any lower levels would fit into our miptree.
103 intel_miptree_reference(&intel_texobj
->mt
, intel_image
->mt
);
105 DBG("%s: alloc obj %p level %d %dx%dx%d using new miptree %p\n",
106 __FUNCTION__
, texobj
, image
->Level
,
107 width
, height
, depth
, intel_image
->mt
);
114 intel_free_texture_image_buffer(struct gl_context
* ctx
,
115 struct gl_texture_image
*texImage
)
117 struct intel_texture_image
*intelImage
= intel_texture_image(texImage
);
119 DBG("%s\n", __FUNCTION__
);
121 intel_miptree_release(&intelImage
->mt
);
123 if (intelImage
->base
.Buffer
) {
124 _mesa_align_free(intelImage
->base
.Buffer
);
125 intelImage
->base
.Buffer
= NULL
;
128 if (intelImage
->base
.ImageOffsets
) {
129 free(intelImage
->base
.ImageOffsets
);
130 intelImage
->base
.ImageOffsets
= NULL
;
135 * Map texture memory/buffer into user space.
136 * Note: the region of interest parameters are ignored here.
137 * \param mode bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
138 * \param mapOut returns start of mapping of region of interest
139 * \param rowStrideOut returns row stride in bytes
142 intel_map_texture_image(struct gl_context
*ctx
,
143 struct gl_texture_image
*tex_image
,
145 GLuint x
, GLuint y
, GLuint w
, GLuint h
,
150 struct intel_context
*intel
= intel_context(ctx
);
151 struct intel_texture_image
*intel_image
= intel_texture_image(tex_image
);
152 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
155 unsigned int image_x
, image_y
;
157 /* Our texture data is always stored in a miptree. */
160 /* Check that our caller wasn't confused about how to map a 1D texture. */
161 assert(tex_image
->TexObject
->Target
!= GL_TEXTURE_1D_ARRAY
||
164 if (mt
->stencil_mt
) {
165 /* The miptree has depthstencil format, but uses separate stencil. The
166 * embedded stencil miptree contains the real stencil data, so gather
167 * that into the depthstencil miptree.
169 * FIXME: Avoid the gather if the texture is mapped as write-only.
171 intel_miptree_s8z24_gather(intel
, mt
, tex_image
->Level
, slice
);
174 /* For compressed formats, the stride is the number of bytes per
175 * row of blocks. intel_miptree_get_image_offset() already does
178 _mesa_get_format_block_size(tex_image
->TexFormat
, &bw
, &bh
);
182 base
= intel_region_map(intel
, mt
->region
, mode
);
183 intel_miptree_get_image_offset(mt
, tex_image
->Level
, tex_image
->Face
,
184 slice
, &image_x
, &image_y
);
188 *stride
= mt
->region
->pitch
* mt
->cpp
;
189 *map
= base
+ y
* *stride
+ x
* mt
->cpp
;
191 DBG("%s: %d,%d %dx%d from mt %p %d,%d = %p/%d\n", __FUNCTION__
,
192 x
- image_x
, y
- image_y
, w
, h
,
193 mt
, x
, y
, *map
, *stride
);
197 intel_unmap_texture_image(struct gl_context
*ctx
,
198 struct gl_texture_image
*tex_image
, GLuint slice
)
200 struct intel_context
*intel
= intel_context(ctx
);
201 struct intel_texture_image
*intel_image
= intel_texture_image(tex_image
);
202 struct intel_mipmap_tree
*mt
= intel_image
->mt
;
204 intel_region_unmap(intel
, intel_image
->mt
->region
);
206 if (mt
->stencil_mt
) {
207 /* The miptree has depthstencil format, but uses separate stencil. The
208 * embedded stencil miptree must contain the real stencil data after
209 * unmapping, so copy it from the depthstencil miptree into the stencil
212 * FIXME: Avoid the scatter if the texture was mapped as read-only.
214 intel_miptree_s8z24_scatter(intel
, mt
, tex_image
->Level
, slice
);
219 intelInitTextureFuncs(struct dd_function_table
*functions
)
221 functions
->NewTextureObject
= intelNewTextureObject
;
222 functions
->NewTextureImage
= intelNewTextureImage
;
223 functions
->DeleteTextureImage
= intelDeleteTextureImage
;
224 functions
->DeleteTexture
= intelDeleteTextureObject
;
225 functions
->AllocTextureImageBuffer
= intel_alloc_texture_image_buffer
;
226 functions
->FreeTextureImageBuffer
= intel_free_texture_image_buffer
;
227 functions
->MapTextureImage
= intel_map_texture_image
;
228 functions
->UnmapTextureImage
= intel_unmap_texture_image
;