2 * Mesa 3-D graphics library
4 * Copyright (C) 2011 VMware, Inc. All Rights Reserved.
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7 * copy of this software and associated documentation files (the "Software"),
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28 * GL_ARB_texture_storage functions
40 #include "texstorage.h"
46 * Check if the given texture target is a legal texture object target
47 * for a glTexStorage() command.
48 * This is a bit different than legal_teximage_target() when it comes
52 legal_texobj_target(struct gl_context
*ctx
, GLuint dims
, GLenum target
)
58 case GL_PROXY_TEXTURE_1D
:
66 case GL_PROXY_TEXTURE_2D
:
68 case GL_TEXTURE_CUBE_MAP
:
69 case GL_PROXY_TEXTURE_CUBE_MAP
:
70 return ctx
->Extensions
.ARB_texture_cube_map
;
71 case GL_TEXTURE_RECTANGLE
:
72 case GL_PROXY_TEXTURE_RECTANGLE
:
73 return ctx
->Extensions
.NV_texture_rectangle
;
74 case GL_TEXTURE_1D_ARRAY
:
75 case GL_PROXY_TEXTURE_1D_ARRAY
:
76 return (ctx
->Extensions
.MESA_texture_array
||
77 ctx
->Extensions
.EXT_texture_array
);
84 case GL_PROXY_TEXTURE_3D
:
86 case GL_TEXTURE_2D_ARRAY
:
87 case GL_PROXY_TEXTURE_2D_ARRAY
:
88 return (ctx
->Extensions
.MESA_texture_array
||
89 ctx
->Extensions
.EXT_texture_array
);
90 case GL_TEXTURE_CUBE_MAP_ARRAY
:
91 case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY
:
92 return ctx
->Extensions
.ARB_texture_cube_map_array
;
97 _mesa_problem(ctx
, "invalid dims=%u in legal_texobj_target()", dims
);
104 * Compute the size of the next mipmap level.
107 next_mipmap_level_size(GLenum target
,
108 GLint
*width
, GLint
*height
, GLint
*depth
)
114 if ((*height
> 1) && (target
!= GL_TEXTURE_1D_ARRAY
)) {
118 if ((*depth
> 1) && (target
!= GL_TEXTURE_2D_ARRAY
)) {
124 /** Helper to get a particular texture image in a texture object */
125 static struct gl_texture_image
*
126 get_tex_image(struct gl_context
*ctx
,
127 struct gl_texture_object
*texObj
,
128 GLuint face
, GLuint level
)
130 const GLenum faceTarget
=
131 (texObj
->Target
== GL_TEXTURE_CUBE_MAP
||
132 texObj
->Target
== GL_PROXY_TEXTURE_CUBE_MAP
)
133 ? GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ face
: texObj
->Target
;
134 return _mesa_get_tex_image(ctx
, texObj
, faceTarget
, level
);
140 initialize_texture_fields(struct gl_context
*ctx
,
141 struct gl_texture_object
*texObj
,
143 GLsizei width
, GLsizei height
, GLsizei depth
,
144 GLenum internalFormat
, gl_format texFormat
)
146 const GLenum target
= texObj
->Target
;
147 const GLuint numFaces
= _mesa_num_tex_faces(target
);
148 GLint level
, levelWidth
= width
, levelHeight
= height
, levelDepth
= depth
;
151 /* Set up all the texture object's gl_texture_images */
152 for (level
= 0; level
< levels
; level
++) {
153 for (face
= 0; face
< numFaces
; face
++) {
154 struct gl_texture_image
*texImage
=
155 get_tex_image(ctx
, texObj
, face
, level
);
158 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glTexStorage");
162 _mesa_init_teximage_fields(ctx
, texImage
,
163 levelWidth
, levelHeight
, levelDepth
,
164 0, internalFormat
, texFormat
);
167 next_mipmap_level_size(target
, &levelWidth
, &levelHeight
, &levelDepth
);
174 * Clear all fields of texture object to zeros. Used for proxy texture tests.
175 * Used for proxy texture tests (and to clean up when a texture memory
179 clear_texture_fields(struct gl_context
*ctx
,
180 struct gl_texture_object
*texObj
)
182 const GLenum target
= texObj
->Target
;
183 const GLuint numFaces
= _mesa_num_tex_faces(target
);
187 for (level
= 0; level
< Elements(texObj
->Image
[0]); level
++) {
188 for (face
= 0; face
< numFaces
; face
++) {
189 struct gl_texture_image
*texImage
=
190 get_tex_image(ctx
, texObj
, face
, level
);
193 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glTexStorage");
197 _mesa_init_teximage_fields(ctx
, texImage
,
198 0, 0, 0, 0, /* w, h, d, border */
199 GL_NONE
, MESA_FORMAT_NONE
);
206 _mesa_is_legal_tex_storage_format(struct gl_context
*ctx
, GLenum internalformat
)
208 /* check internal format - note that only sized formats are allowed */
209 switch (internalformat
) {
212 case GL_LUMINANCE_ALPHA
:
219 case GL_DEPTH_COMPONENT
:
220 case GL_DEPTH_STENCIL
:
221 case GL_COMPRESSED_ALPHA
:
222 case GL_COMPRESSED_LUMINANCE_ALPHA
:
223 case GL_COMPRESSED_LUMINANCE
:
224 case GL_COMPRESSED_INTENSITY
:
225 case GL_COMPRESSED_RGB
:
226 case GL_COMPRESSED_RGBA
:
227 case GL_COMPRESSED_SRGB
:
228 case GL_COMPRESSED_SRGB_ALPHA
:
229 case GL_COMPRESSED_SLUMINANCE
:
230 case GL_COMPRESSED_SLUMINANCE_ALPHA
:
232 case GL_GREEN_INTEGER
:
233 case GL_BLUE_INTEGER
:
234 case GL_ALPHA_INTEGER
:
236 case GL_RGBA_INTEGER
:
238 case GL_BGRA_INTEGER
:
239 case GL_LUMINANCE_INTEGER_EXT
:
240 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
241 /* these unsized formats are illegal */
244 return _mesa_base_tex_format(ctx
, internalformat
) > 0;
249 * Default ctx->Driver.AllocTextureStorage() handler.
251 * The driver can override this with a more specific implementation if it
252 * desires, but this can be used to get the texture images allocated using the
253 * usual texture image handling code. The immutability of
254 * GL_ARB_texture_storage texture layouts is handled by texObj->Immutable
255 * checks at glTexImage* time.
258 _mesa_alloc_texture_storage(struct gl_context
*ctx
,
259 struct gl_texture_object
*texObj
,
260 GLsizei levels
, GLsizei width
,
261 GLsizei height
, GLsizei depth
)
263 const int numFaces
= _mesa_num_tex_faces(texObj
->Target
);
267 for (face
= 0; face
< numFaces
; face
++) {
268 for (level
= 0; level
< levels
; level
++) {
269 struct gl_texture_image
*const texImage
= texObj
->Image
[face
][level
];
270 if (!ctx
->Driver
.AllocTextureImageBuffer(ctx
, texImage
))
280 * Do error checking for calls to glTexStorage1/2/3D().
281 * If an error is found, record it with _mesa_error(), unless the target
282 * is a proxy texture.
283 * \return GL_TRUE if any error, GL_FALSE otherwise.
286 tex_storage_error_check(struct gl_context
*ctx
, GLuint dims
, GLenum target
,
287 GLsizei levels
, GLenum internalformat
,
288 GLsizei width
, GLsizei height
, GLsizei depth
)
290 struct gl_texture_object
*texObj
;
292 if (!_mesa_is_legal_tex_storage_format(ctx
, internalformat
)) {
293 _mesa_error(ctx
, GL_INVALID_ENUM
,
294 "glTexStorage%uD(internalformat = %s)", dims
,
295 _mesa_lookup_enum_by_nr(internalformat
));
300 if (width
< 1 || height
< 1 || depth
< 1) {
301 _mesa_error(ctx
, GL_INVALID_VALUE
,
302 "glTexStorage%uD(width, height or depth < 1)", dims
);
307 if (!legal_texobj_target(ctx
, dims
, target
)) {
308 _mesa_error(ctx
, GL_INVALID_ENUM
,
309 "glTexStorage%uD(illegal target=%s)",
310 dims
, _mesa_lookup_enum_by_nr(target
));
316 _mesa_error(ctx
, GL_INVALID_VALUE
, "glTexStorage%uD(levels < 1)",
321 /* check levels against maximum (note different error than above) */
322 if (levels
> (GLint
) _mesa_max_texture_levels(ctx
, target
)) {
323 _mesa_error(ctx
, GL_INVALID_OPERATION
,
324 "glTexStorage%uD(levels too large)", dims
);
328 /* check levels against width/height/depth */
329 if (levels
> _mesa_get_tex_max_num_levels(target
, width
, height
, depth
)) {
330 _mesa_error(ctx
, GL_INVALID_OPERATION
,
331 "glTexStorage%uD(too many levels for max texture dimension)",
336 /* non-default texture object check */
337 texObj
= _mesa_get_current_tex_object(ctx
, target
);
338 if (!texObj
|| (texObj
->Name
== 0)) {
339 _mesa_error(ctx
, GL_INVALID_OPERATION
,
340 "glTexStorage%uD(texture object 0)", dims
);
344 /* Check if texObj->Immutable is set */
345 if (texObj
->Immutable
) {
346 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glTexStorage%uD(immutable)",
356 * Helper used by _mesa_TexStorage1/2/3D().
359 texstorage(GLuint dims
, GLenum target
, GLsizei levels
, GLenum internalformat
,
360 GLsizei width
, GLsizei height
, GLsizei depth
)
362 struct gl_texture_object
*texObj
;
363 GLboolean sizeOK
, dimensionsOK
;
366 GET_CURRENT_CONTEXT(ctx
);
368 if (tex_storage_error_check(ctx
, dims
, target
, levels
,
369 internalformat
, width
, height
, depth
)) {
370 return; /* error was recorded */
373 texObj
= _mesa_get_current_tex_object(ctx
, target
);
376 texFormat
= _mesa_choose_texture_format(ctx
, texObj
, target
, 0,
377 internalformat
, GL_NONE
, GL_NONE
);
378 assert(texFormat
!= MESA_FORMAT_NONE
);
380 /* check that width, height, depth are legal for the mipmap level */
381 dimensionsOK
= _mesa_legal_texture_dimensions(ctx
, target
, 0,
382 width
, height
, depth
, 0);
384 sizeOK
= ctx
->Driver
.TestProxyTexImage(ctx
, target
, 0, texFormat
,
385 width
, height
, depth
, 0);
387 if (_mesa_is_proxy_texture(texObj
->Target
)) {
388 if (dimensionsOK
&& sizeOK
) {
389 initialize_texture_fields(ctx
, texObj
, levels
, width
, height
, depth
,
390 internalformat
, texFormat
);
393 /* clear all image fields for [levels] */
394 clear_texture_fields(ctx
, texObj
);
399 _mesa_error(ctx
, GL_INVALID_VALUE
,
400 "glTexStorage%uD(invalid width, height or depth)", dims
);
405 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
406 "glTexStorage%uD(texture too large)", dims
);
414 if (!initialize_texture_fields(ctx
, texObj
, levels
, width
, height
, depth
,
415 internalformat
, texFormat
)) {
419 /* Do actual texture memory allocation */
420 if (!ctx
->Driver
.AllocTextureStorage(ctx
, texObj
, levels
,
421 width
, height
, depth
)) {
422 /* Reset the texture images' info to zeros.
423 * Strictly speaking, we probably don't have to do this since
424 * generating GL_OUT_OF_MEMORY can leave things in an undefined
425 * state but this puts things in a consistent state.
427 clear_texture_fields(ctx
, texObj
);
428 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glTexStorage%uD", dims
);
432 texObj
->Immutable
= GL_TRUE
;
433 texObj
->ImmutableLevels
= levels
;
439 _mesa_TexStorage1D(GLenum target
, GLsizei levels
, GLenum internalformat
,
442 texstorage(1, target
, levels
, internalformat
, width
, 1, 1);
447 _mesa_TexStorage2D(GLenum target
, GLsizei levels
, GLenum internalformat
,
448 GLsizei width
, GLsizei height
)
450 texstorage(2, target
, levels
, internalformat
, width
, height
, 1);
455 _mesa_TexStorage3D(GLenum target
, GLsizei levels
, GLenum internalformat
,
456 GLsizei width
, GLsizei height
, GLsizei depth
)
458 texstorage(3, target
, levels
, internalformat
, width
, height
, depth
);
464 * Note: we don't support GL_EXT_direct_state_access and the spec says
465 * we don't need the following functions. However, glew checks for the
466 * presence of all six functions and will say that GL_ARB_texture_storage
467 * is not supported if these functions are missing.
472 _mesa_TextureStorage1DEXT(GLuint texture
, GLenum target
, GLsizei levels
,
473 GLenum internalformat
,
481 _mesa_TextureStorage2DEXT(GLuint texture
, GLenum target
, GLsizei levels
,
482 GLenum internalformat
,
483 GLsizei width
, GLsizei height
)
491 _mesa_TextureStorage3DEXT(GLuint texture
, GLenum target
, GLsizei levels
,
492 GLenum internalformat
,
493 GLsizei width
, GLsizei height
, GLsizei depth
)