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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 
14 static struct gl_texture_image *
intelNewTextureImage(struct gl_context * ctx)15 intelNewTextureImage(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 
22 static void
intelDeleteTextureImage(struct gl_context * ctx,struct gl_texture_image * img)23 intelDeleteTextureImage(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 
30 static struct gl_texture_object *
intelNewTextureObject(struct gl_context * ctx,GLuint name,GLenum target)31 intelNewTextureObject(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 
49 static void
intelDeleteTextureObject(struct gl_context * ctx,struct gl_texture_object * texObj)50 intelDeleteTextureObject(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 
59 static GLboolean
intel_alloc_texture_image_buffer(struct gl_context * ctx,struct gl_texture_image * image)60 intel_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 
107 static void
intel_free_texture_image_buffer(struct gl_context * ctx,struct gl_texture_image * texImage)108 intel_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  */
127 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)128 intel_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    /* Check that our caller wasn't confused about how to map a 1D texture. */
144    assert(tex_image->TexObject->Target != GL_TEXTURE_1D_ARRAY ||
145 	  h == 1);
146 
147    /* intel_miptree_map operates on a unified "slice" number that references the
148     * cube face, since it's all just slices to the miptree code.
149     */
150    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
151       slice = tex_image->Face;
152 
153    intel_miptree_map(intel, mt, tex_image->Level, slice, x, y, w, h, mode,
154 		     (void **)map, stride);
155 }
156 
157 static void
intel_unmap_texture_image(struct gl_context * ctx,struct gl_texture_image * tex_image,GLuint slice)158 intel_unmap_texture_image(struct gl_context *ctx,
159 			  struct gl_texture_image *tex_image, GLuint slice)
160 {
161    struct intel_context *intel = intel_context(ctx);
162    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
163    struct intel_mipmap_tree *mt = intel_image->mt;
164 
165    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
166       slice = tex_image->Face;
167 
168    intel_miptree_unmap(intel, mt, tex_image->Level, slice);
169 }
170 
171 void
intelInitTextureFuncs(struct dd_function_table * functions)172 intelInitTextureFuncs(struct dd_function_table *functions)
173 {
174    functions->NewTextureObject = intelNewTextureObject;
175    functions->NewTextureImage = intelNewTextureImage;
176    functions->DeleteTextureImage = intelDeleteTextureImage;
177    functions->DeleteTexture = intelDeleteTextureObject;
178    functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
179    functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
180    functions->MapTextureImage = intel_map_texture_image;
181    functions->UnmapTextureImage = intel_unmap_texture_image;
182 }
183