2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 * glTexParameter-related functions
33 #include "main/glheader.h"
34 #include "main/colormac.h"
35 #include "main/context.h"
36 #include "main/enums.h"
37 #include "main/formats.h"
38 #include "main/image.h"
39 #include "main/macros.h"
40 #include "main/mfeatures.h"
41 #include "main/mtypes.h"
42 #include "main/state.h"
43 #include "main/texcompress.h"
44 #include "main/texparam.h"
45 #include "main/teximage.h"
46 #include "main/texstate.h"
47 #include "program/prog_instruction.h"
51 * Check if a coordinate wrap mode is supported for the texture target.
52 * \return GL_TRUE if legal, GL_FALSE otherwise
55 validate_texture_wrap_mode(struct gl_context
* ctx
, GLenum target
, GLenum wrap
)
57 const struct gl_extensions
* const e
= & ctx
->Extensions
;
59 if (target
== GL_TEXTURE_RECTANGLE_NV
) {
60 if (wrap
== GL_CLAMP
|| wrap
== GL_CLAMP_TO_EDGE
||
61 (wrap
== GL_CLAMP_TO_BORDER
&& e
->ARB_texture_border_clamp
))
64 else if (target
== GL_TEXTURE_EXTERNAL_OES
) {
65 if (wrap
== GL_CLAMP_TO_EDGE
)
72 case GL_CLAMP_TO_EDGE
:
73 case GL_MIRRORED_REPEAT
:
75 case GL_CLAMP_TO_BORDER
:
76 if (e
->ARB_texture_border_clamp
)
79 case GL_MIRROR_CLAMP_EXT
:
80 case GL_MIRROR_CLAMP_TO_EDGE_EXT
:
81 if (e
->ATI_texture_mirror_once
|| e
->EXT_texture_mirror_clamp
)
84 case GL_MIRROR_CLAMP_TO_BORDER_EXT
:
85 if (e
->EXT_texture_mirror_clamp
)
93 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexParameter(param=0x%x)", wrap
);
99 * Get current texture object for given target.
100 * Return NULL if any error (and record the error).
101 * Note that this is different from _mesa_select_tex_object() in that proxy
102 * targets are not accepted.
103 * Only the glGetTexLevelParameter() functions accept proxy targets.
105 static struct gl_texture_object
*
106 get_texobj(struct gl_context
*ctx
, GLenum target
, GLboolean get
)
108 struct gl_texture_unit
*texUnit
;
110 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxCombinedTextureImageUnits
) {
111 _mesa_error(ctx
, GL_INVALID_OPERATION
,
112 "gl%sTexParameter(current unit)", get
? "Get" : "");
116 texUnit
= _mesa_get_current_tex_unit(ctx
);
120 return texUnit
->CurrentTex
[TEXTURE_1D_INDEX
];
122 return texUnit
->CurrentTex
[TEXTURE_2D_INDEX
];
124 return texUnit
->CurrentTex
[TEXTURE_3D_INDEX
];
125 case GL_TEXTURE_CUBE_MAP
:
126 if (ctx
->Extensions
.ARB_texture_cube_map
) {
127 return texUnit
->CurrentTex
[TEXTURE_CUBE_INDEX
];
130 case GL_TEXTURE_RECTANGLE_NV
:
131 if (ctx
->Extensions
.NV_texture_rectangle
) {
132 return texUnit
->CurrentTex
[TEXTURE_RECT_INDEX
];
135 case GL_TEXTURE_1D_ARRAY_EXT
:
136 if (ctx
->Extensions
.MESA_texture_array
||
137 ctx
->Extensions
.EXT_texture_array
) {
138 return texUnit
->CurrentTex
[TEXTURE_1D_ARRAY_INDEX
];
141 case GL_TEXTURE_2D_ARRAY_EXT
:
142 if (ctx
->Extensions
.MESA_texture_array
||
143 ctx
->Extensions
.EXT_texture_array
) {
144 return texUnit
->CurrentTex
[TEXTURE_2D_ARRAY_INDEX
];
147 case GL_TEXTURE_EXTERNAL_OES
:
148 if (ctx
->Extensions
.OES_EGL_image_external
) {
149 return texUnit
->CurrentTex
[TEXTURE_EXTERNAL_INDEX
];
156 _mesa_error(ctx
, GL_INVALID_ENUM
,
157 "gl%sTexParameter(target)", get
? "Get" : "");
163 * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
164 * \return -1 if error.
167 comp_to_swizzle(GLenum comp
)
189 set_swizzle_component(GLuint
*swizzle
, GLuint comp
, GLuint swz
)
192 ASSERT(swz
<= SWIZZLE_NIL
);
194 GLuint mask
= 0x7 << (3 * comp
);
195 GLuint s
= (*swizzle
& ~mask
) | (swz
<< (3 * comp
));
202 * This is called just prior to changing any texture object state which
203 * will not effect texture completeness.
206 flush(struct gl_context
*ctx
)
208 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
213 * This is called just prior to changing any texture object state which
214 * can effect texture completeness (texture base level, max level,
215 * minification filter).
216 * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
217 * state flag and then mark the texture object as 'incomplete' so that any
218 * per-texture derived state gets recomputed.
221 incomplete(struct gl_context
*ctx
, struct gl_texture_object
*texObj
)
223 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
224 texObj
->_Complete
= GL_FALSE
;
229 * Set an integer-valued texture parameter
230 * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
233 set_tex_parameteri(struct gl_context
*ctx
,
234 struct gl_texture_object
*texObj
,
235 GLenum pname
, const GLint
*params
)
238 case GL_TEXTURE_MIN_FILTER
:
239 if (texObj
->Sampler
.MinFilter
== params
[0])
244 incomplete(ctx
, texObj
);
245 texObj
->Sampler
.MinFilter
= params
[0];
247 case GL_NEAREST_MIPMAP_NEAREST
:
248 case GL_LINEAR_MIPMAP_NEAREST
:
249 case GL_NEAREST_MIPMAP_LINEAR
:
250 case GL_LINEAR_MIPMAP_LINEAR
:
251 if (texObj
->Target
!= GL_TEXTURE_RECTANGLE_NV
&&
252 texObj
->Target
!= GL_TEXTURE_EXTERNAL_OES
) {
253 incomplete(ctx
, texObj
);
254 texObj
->Sampler
.MinFilter
= params
[0];
263 case GL_TEXTURE_MAG_FILTER
:
264 if (texObj
->Sampler
.MagFilter
== params
[0])
269 flush(ctx
); /* does not effect completeness */
270 texObj
->Sampler
.MagFilter
= params
[0];
277 case GL_TEXTURE_WRAP_S
:
278 if (texObj
->Sampler
.WrapS
== params
[0])
280 if (validate_texture_wrap_mode(ctx
, texObj
->Target
, params
[0])) {
282 texObj
->Sampler
.WrapS
= params
[0];
287 case GL_TEXTURE_WRAP_T
:
288 if (texObj
->Sampler
.WrapT
== params
[0])
290 if (validate_texture_wrap_mode(ctx
, texObj
->Target
, params
[0])) {
292 texObj
->Sampler
.WrapT
= params
[0];
297 case GL_TEXTURE_WRAP_R
:
298 if (texObj
->Sampler
.WrapR
== params
[0])
300 if (validate_texture_wrap_mode(ctx
, texObj
->Target
, params
[0])) {
302 texObj
->Sampler
.WrapR
= params
[0];
307 case GL_TEXTURE_BASE_LEVEL
:
308 if (texObj
->BaseLevel
== params
[0])
311 (texObj
->Target
== GL_TEXTURE_RECTANGLE_ARB
&& params
[0] != 0)) {
312 _mesa_error(ctx
, GL_INVALID_VALUE
,
313 "glTexParameter(param=%d)", params
[0]);
316 incomplete(ctx
, texObj
);
317 texObj
->BaseLevel
= params
[0];
320 case GL_TEXTURE_MAX_LEVEL
:
321 if (texObj
->MaxLevel
== params
[0])
323 if (params
[0] < 0 || texObj
->Target
== GL_TEXTURE_RECTANGLE_ARB
) {
324 _mesa_error(ctx
, GL_INVALID_OPERATION
,
325 "glTexParameter(param=%d)", params
[0]);
328 incomplete(ctx
, texObj
);
329 texObj
->MaxLevel
= params
[0];
332 case GL_GENERATE_MIPMAP_SGIS
:
333 if (params
[0] && texObj
->Target
== GL_TEXTURE_EXTERNAL_OES
)
335 if (texObj
->GenerateMipmap
!= params
[0]) {
337 texObj
->GenerateMipmap
= params
[0] ? GL_TRUE
: GL_FALSE
;
342 case GL_TEXTURE_COMPARE_MODE_ARB
:
343 if (ctx
->Extensions
.ARB_shadow
) {
344 if (texObj
->Sampler
.CompareMode
== params
[0])
346 if (params
[0] == GL_NONE
||
347 params
[0] == GL_COMPARE_R_TO_TEXTURE_ARB
) {
349 texObj
->Sampler
.CompareMode
= params
[0];
356 case GL_TEXTURE_COMPARE_FUNC_ARB
:
357 if (ctx
->Extensions
.ARB_shadow
) {
358 if (texObj
->Sampler
.CompareFunc
== params
[0])
364 texObj
->Sampler
.CompareFunc
= params
[0];
372 if (ctx
->Extensions
.EXT_shadow_funcs
) {
374 texObj
->Sampler
.CompareFunc
= params
[0];
384 case GL_DEPTH_TEXTURE_MODE_ARB
:
385 if (ctx
->Extensions
.ARB_depth_texture
) {
386 if (texObj
->Sampler
.DepthMode
== params
[0])
388 if (params
[0] == GL_LUMINANCE
||
389 params
[0] == GL_INTENSITY
||
390 params
[0] == GL_ALPHA
||
391 (ctx
->Extensions
.ARB_texture_rg
&& params
[0] == GL_RED
)) {
393 texObj
->Sampler
.DepthMode
= params
[0];
400 #if FEATURE_OES_draw_texture
401 case GL_TEXTURE_CROP_RECT_OES
:
402 texObj
->CropRect
[0] = params
[0];
403 texObj
->CropRect
[1] = params
[1];
404 texObj
->CropRect
[2] = params
[2];
405 texObj
->CropRect
[3] = params
[3];
409 case GL_TEXTURE_SWIZZLE_R_EXT
:
410 case GL_TEXTURE_SWIZZLE_G_EXT
:
411 case GL_TEXTURE_SWIZZLE_B_EXT
:
412 case GL_TEXTURE_SWIZZLE_A_EXT
:
413 if (ctx
->Extensions
.EXT_texture_swizzle
) {
414 const GLuint comp
= pname
- GL_TEXTURE_SWIZZLE_R_EXT
;
415 const GLint swz
= comp_to_swizzle(params
[0]);
417 _mesa_error(ctx
, GL_INVALID_OPERATION
,
418 "glTexParameter(swizzle 0x%x)", params
[0]);
424 texObj
->Swizzle
[comp
] = params
[0];
425 set_swizzle_component(&texObj
->_Swizzle
, comp
, swz
);
430 case GL_TEXTURE_SWIZZLE_RGBA_EXT
:
431 if (ctx
->Extensions
.EXT_texture_swizzle
) {
434 for (comp
= 0; comp
< 4; comp
++) {
435 const GLint swz
= comp_to_swizzle(params
[comp
]);
437 texObj
->Swizzle
[comp
] = params
[comp
];
438 set_swizzle_component(&texObj
->_Swizzle
, comp
, swz
);
441 _mesa_error(ctx
, GL_INVALID_OPERATION
,
442 "glTexParameter(swizzle 0x%x)", params
[comp
]);
450 case GL_TEXTURE_SRGB_DECODE_EXT
:
451 if (ctx
->Extensions
.EXT_texture_sRGB_decode
) {
452 GLenum decode
= params
[0];
453 if (decode
== GL_DECODE_EXT
|| decode
== GL_SKIP_DECODE_EXT
) {
454 if (texObj
->Sampler
.sRGBDecode
!= decode
) {
456 texObj
->Sampler
.sRGBDecode
= decode
;
463 case GL_TEXTURE_CUBE_MAP_SEAMLESS
:
464 if (ctx
->Extensions
.AMD_seamless_cubemap_per_texture
) {
465 GLenum param
= params
[0];
466 if (param
!= GL_TRUE
&& param
!= GL_FALSE
) {
469 if (param
!= texObj
->Sampler
.CubeMapSeamless
) {
471 texObj
->Sampler
.CubeMapSeamless
= param
;
482 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexParameter(pname=%s)",
483 _mesa_lookup_enum_by_nr(pname
));
487 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexParameter(param=%s)",
488 _mesa_lookup_enum_by_nr(params
[0]));
494 * Set a float-valued texture parameter
495 * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
498 set_tex_parameterf(struct gl_context
*ctx
,
499 struct gl_texture_object
*texObj
,
500 GLenum pname
, const GLfloat
*params
)
503 case GL_TEXTURE_MIN_LOD
:
504 if (texObj
->Sampler
.MinLod
== params
[0])
507 texObj
->Sampler
.MinLod
= params
[0];
510 case GL_TEXTURE_MAX_LOD
:
511 if (texObj
->Sampler
.MaxLod
== params
[0])
514 texObj
->Sampler
.MaxLod
= params
[0];
517 case GL_TEXTURE_PRIORITY
:
519 texObj
->Priority
= CLAMP(params
[0], 0.0F
, 1.0F
);
522 case GL_TEXTURE_MAX_ANISOTROPY_EXT
:
523 if (ctx
->Extensions
.EXT_texture_filter_anisotropic
) {
524 if (texObj
->Sampler
.MaxAnisotropy
== params
[0])
526 if (params
[0] < 1.0) {
527 _mesa_error(ctx
, GL_INVALID_VALUE
, "glTexParameter(param)" );
531 /* clamp to max, that's what NVIDIA does */
532 texObj
->Sampler
.MaxAnisotropy
= MIN2(params
[0],
533 ctx
->Const
.MaxTextureMaxAnisotropy
);
537 static GLuint count
= 0;
539 _mesa_error(ctx
, GL_INVALID_ENUM
,
540 "glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)");
544 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB
:
545 if (ctx
->Extensions
.ARB_shadow_ambient
) {
546 if (texObj
->Sampler
.CompareFailValue
!= params
[0]) {
548 texObj
->Sampler
.CompareFailValue
= CLAMP(params
[0], 0.0F
, 1.0F
);
553 _mesa_error(ctx
, GL_INVALID_ENUM
,
554 "glTexParameter(pname=GL_TEXTURE_COMPARE_FAIL_VALUE_ARB)");
558 case GL_TEXTURE_LOD_BIAS
:
559 /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias */
560 if (texObj
->Sampler
.LodBias
!= params
[0]) {
562 texObj
->Sampler
.LodBias
= params
[0];
567 case GL_TEXTURE_BORDER_COLOR
:
569 /* ARB_texture_float disables clamping */
570 if (ctx
->Extensions
.ARB_texture_float
) {
571 texObj
->Sampler
.BorderColor
.f
[RCOMP
] = params
[0];
572 texObj
->Sampler
.BorderColor
.f
[GCOMP
] = params
[1];
573 texObj
->Sampler
.BorderColor
.f
[BCOMP
] = params
[2];
574 texObj
->Sampler
.BorderColor
.f
[ACOMP
] = params
[3];
576 texObj
->Sampler
.BorderColor
.f
[RCOMP
] = CLAMP(params
[0], 0.0F
, 1.0F
);
577 texObj
->Sampler
.BorderColor
.f
[GCOMP
] = CLAMP(params
[1], 0.0F
, 1.0F
);
578 texObj
->Sampler
.BorderColor
.f
[BCOMP
] = CLAMP(params
[2], 0.0F
, 1.0F
);
579 texObj
->Sampler
.BorderColor
.f
[ACOMP
] = CLAMP(params
[3], 0.0F
, 1.0F
);
584 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexParameter(pname=0x%x)", pname
);
591 _mesa_TexParameterf(GLenum target
, GLenum pname
, GLfloat param
)
593 GLboolean need_update
;
594 struct gl_texture_object
*texObj
;
595 GET_CURRENT_CONTEXT(ctx
);
596 ASSERT_OUTSIDE_BEGIN_END(ctx
);
598 texObj
= get_texobj(ctx
, target
, GL_FALSE
);
603 case GL_TEXTURE_MIN_FILTER
:
604 case GL_TEXTURE_MAG_FILTER
:
605 case GL_TEXTURE_WRAP_S
:
606 case GL_TEXTURE_WRAP_T
:
607 case GL_TEXTURE_WRAP_R
:
608 case GL_TEXTURE_BASE_LEVEL
:
609 case GL_TEXTURE_MAX_LEVEL
:
610 case GL_GENERATE_MIPMAP_SGIS
:
611 case GL_TEXTURE_COMPARE_MODE_ARB
:
612 case GL_TEXTURE_COMPARE_FUNC_ARB
:
613 case GL_DEPTH_TEXTURE_MODE_ARB
:
614 case GL_TEXTURE_SRGB_DECODE_EXT
:
615 case GL_TEXTURE_CUBE_MAP_SEAMLESS
:
617 /* convert float param to int */
619 p
[0] = (GLint
) param
;
620 p
[1] = p
[2] = p
[3] = 0;
621 need_update
= set_tex_parameteri(ctx
, texObj
, pname
, p
);
624 case GL_TEXTURE_SWIZZLE_R_EXT
:
625 case GL_TEXTURE_SWIZZLE_G_EXT
:
626 case GL_TEXTURE_SWIZZLE_B_EXT
:
627 case GL_TEXTURE_SWIZZLE_A_EXT
:
630 p
[0] = (GLint
) param
;
631 p
[1] = p
[2] = p
[3] = 0;
632 need_update
= set_tex_parameteri(ctx
, texObj
, pname
, p
);
637 /* this will generate an error if pname is illegal */
640 p
[1] = p
[2] = p
[3] = 0.0F
;
641 need_update
= set_tex_parameterf(ctx
, texObj
, pname
, p
);
645 if (ctx
->Driver
.TexParameter
&& need_update
) {
646 ctx
->Driver
.TexParameter(ctx
, target
, texObj
, pname
, ¶m
);
652 _mesa_TexParameterfv(GLenum target
, GLenum pname
, const GLfloat
*params
)
654 GLboolean need_update
;
655 struct gl_texture_object
*texObj
;
656 GET_CURRENT_CONTEXT(ctx
);
657 ASSERT_OUTSIDE_BEGIN_END(ctx
);
659 texObj
= get_texobj(ctx
, target
, GL_FALSE
);
664 case GL_TEXTURE_MIN_FILTER
:
665 case GL_TEXTURE_MAG_FILTER
:
666 case GL_TEXTURE_WRAP_S
:
667 case GL_TEXTURE_WRAP_T
:
668 case GL_TEXTURE_WRAP_R
:
669 case GL_TEXTURE_BASE_LEVEL
:
670 case GL_TEXTURE_MAX_LEVEL
:
671 case GL_GENERATE_MIPMAP_SGIS
:
672 case GL_TEXTURE_COMPARE_MODE_ARB
:
673 case GL_TEXTURE_COMPARE_FUNC_ARB
:
674 case GL_DEPTH_TEXTURE_MODE_ARB
:
675 case GL_TEXTURE_SRGB_DECODE_EXT
:
676 case GL_TEXTURE_CUBE_MAP_SEAMLESS
:
678 /* convert float param to int */
680 p
[0] = (GLint
) params
[0];
681 p
[1] = p
[2] = p
[3] = 0;
682 need_update
= set_tex_parameteri(ctx
, texObj
, pname
, p
);
686 #if FEATURE_OES_draw_texture
687 case GL_TEXTURE_CROP_RECT_OES
:
689 /* convert float params to int */
691 iparams
[0] = (GLint
) params
[0];
692 iparams
[1] = (GLint
) params
[1];
693 iparams
[2] = (GLint
) params
[2];
694 iparams
[3] = (GLint
) params
[3];
695 need_update
= set_tex_parameteri(ctx
, texObj
, pname
, iparams
);
700 case GL_TEXTURE_SWIZZLE_R_EXT
:
701 case GL_TEXTURE_SWIZZLE_G_EXT
:
702 case GL_TEXTURE_SWIZZLE_B_EXT
:
703 case GL_TEXTURE_SWIZZLE_A_EXT
:
704 case GL_TEXTURE_SWIZZLE_RGBA_EXT
:
706 GLint p
[4] = {0, 0, 0, 0};
707 p
[0] = (GLint
) params
[0];
708 if (pname
== GL_TEXTURE_SWIZZLE_RGBA_EXT
) {
709 p
[1] = (GLint
) params
[1];
710 p
[2] = (GLint
) params
[2];
711 p
[3] = (GLint
) params
[3];
713 need_update
= set_tex_parameteri(ctx
, texObj
, pname
, p
);
717 /* this will generate an error if pname is illegal */
718 need_update
= set_tex_parameterf(ctx
, texObj
, pname
, params
);
721 if (ctx
->Driver
.TexParameter
&& need_update
) {
722 ctx
->Driver
.TexParameter(ctx
, target
, texObj
, pname
, params
);
728 _mesa_TexParameteri(GLenum target
, GLenum pname
, GLint param
)
730 GLboolean need_update
;
731 struct gl_texture_object
*texObj
;
732 GET_CURRENT_CONTEXT(ctx
);
733 ASSERT_OUTSIDE_BEGIN_END(ctx
);
735 texObj
= get_texobj(ctx
, target
, GL_FALSE
);
740 case GL_TEXTURE_MIN_LOD
:
741 case GL_TEXTURE_MAX_LOD
:
742 case GL_TEXTURE_PRIORITY
:
743 case GL_TEXTURE_MAX_ANISOTROPY_EXT
:
744 case GL_TEXTURE_LOD_BIAS
:
745 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB
:
748 fparam
[0] = (GLfloat
) param
;
749 fparam
[1] = fparam
[2] = fparam
[3] = 0.0F
;
750 /* convert int param to float */
751 need_update
= set_tex_parameterf(ctx
, texObj
, pname
, fparam
);
755 /* this will generate an error if pname is illegal */
759 iparam
[1] = iparam
[2] = iparam
[3] = 0;
760 need_update
= set_tex_parameteri(ctx
, texObj
, pname
, iparam
);
764 if (ctx
->Driver
.TexParameter
&& need_update
) {
765 GLfloat fparam
= (GLfloat
) param
;
766 ctx
->Driver
.TexParameter(ctx
, target
, texObj
, pname
, &fparam
);
772 _mesa_TexParameteriv(GLenum target
, GLenum pname
, const GLint
*params
)
774 GLboolean need_update
;
775 struct gl_texture_object
*texObj
;
776 GET_CURRENT_CONTEXT(ctx
);
777 ASSERT_OUTSIDE_BEGIN_END(ctx
);
779 texObj
= get_texobj(ctx
, target
, GL_FALSE
);
784 case GL_TEXTURE_BORDER_COLOR
:
786 /* convert int params to float */
788 fparams
[0] = INT_TO_FLOAT(params
[0]);
789 fparams
[1] = INT_TO_FLOAT(params
[1]);
790 fparams
[2] = INT_TO_FLOAT(params
[2]);
791 fparams
[3] = INT_TO_FLOAT(params
[3]);
792 need_update
= set_tex_parameterf(ctx
, texObj
, pname
, fparams
);
795 case GL_TEXTURE_MIN_LOD
:
796 case GL_TEXTURE_MAX_LOD
:
797 case GL_TEXTURE_PRIORITY
:
798 case GL_TEXTURE_MAX_ANISOTROPY_EXT
:
799 case GL_TEXTURE_LOD_BIAS
:
800 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB
:
802 /* convert int param to float */
804 fparams
[0] = (GLfloat
) params
[0];
805 fparams
[1] = fparams
[2] = fparams
[3] = 0.0F
;
806 need_update
= set_tex_parameterf(ctx
, texObj
, pname
, fparams
);
810 /* this will generate an error if pname is illegal */
811 need_update
= set_tex_parameteri(ctx
, texObj
, pname
, params
);
814 if (ctx
->Driver
.TexParameter
&& need_update
) {
816 fparams
[0] = INT_TO_FLOAT(params
[0]);
817 if (pname
== GL_TEXTURE_BORDER_COLOR
||
818 pname
== GL_TEXTURE_CROP_RECT_OES
) {
819 fparams
[1] = INT_TO_FLOAT(params
[1]);
820 fparams
[2] = INT_TO_FLOAT(params
[2]);
821 fparams
[3] = INT_TO_FLOAT(params
[3]);
823 ctx
->Driver
.TexParameter(ctx
, target
, texObj
, pname
, fparams
);
829 * Set tex parameter to integer value(s). Primarily intended to set
830 * integer-valued texture border color (for integer-valued textures).
834 _mesa_TexParameterIiv(GLenum target
, GLenum pname
, const GLint
*params
)
836 struct gl_texture_object
*texObj
;
837 GET_CURRENT_CONTEXT(ctx
);
838 ASSERT_OUTSIDE_BEGIN_END(ctx
);
840 texObj
= get_texobj(ctx
, target
, GL_FALSE
);
845 case GL_TEXTURE_BORDER_COLOR
:
846 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
847 /* set the integer-valued border color */
848 COPY_4V(texObj
->Sampler
.BorderColor
.i
, params
);
851 _mesa_TexParameteriv(target
, pname
, params
);
854 /* XXX no driver hook for TexParameterIiv() yet */
859 * Set tex parameter to unsigned integer value(s). Primarily intended to set
860 * uint-valued texture border color (for integer-valued textures).
864 _mesa_TexParameterIuiv(GLenum target
, GLenum pname
, const GLuint
*params
)
866 struct gl_texture_object
*texObj
;
867 GET_CURRENT_CONTEXT(ctx
);
868 ASSERT_OUTSIDE_BEGIN_END(ctx
);
870 texObj
= get_texobj(ctx
, target
, GL_FALSE
);
875 case GL_TEXTURE_BORDER_COLOR
:
876 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
877 /* set the unsigned integer-valued border color */
878 COPY_4V(texObj
->Sampler
.BorderColor
.ui
, params
);
881 _mesa_TexParameteriv(target
, pname
, (const GLint
*) params
);
884 /* XXX no driver hook for TexParameterIuiv() yet */
889 _mesa_GetTexLevelParameterfv( GLenum target
, GLint level
,
890 GLenum pname
, GLfloat
*params
)
893 _mesa_GetTexLevelParameteriv( target
, level
, pname
, &iparam
);
894 *params
= (GLfloat
) iparam
;
899 _mesa_GetTexLevelParameteriv( GLenum target
, GLint level
,
900 GLenum pname
, GLint
*params
)
902 const struct gl_texture_unit
*texUnit
;
903 struct gl_texture_object
*texObj
;
904 const struct gl_texture_image
*img
= NULL
;
907 GET_CURRENT_CONTEXT(ctx
);
908 ASSERT_OUTSIDE_BEGIN_END(ctx
);
910 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxCombinedTextureImageUnits
) {
911 _mesa_error(ctx
, GL_INVALID_OPERATION
,
912 "glGetTexLevelParameteriv(current unit)");
916 texUnit
= _mesa_get_current_tex_unit(ctx
);
918 /* this will catch bad target values */
919 maxLevels
= _mesa_max_texture_levels(ctx
, target
);
920 if (maxLevels
== 0) {
921 _mesa_error(ctx
, GL_INVALID_ENUM
,
922 "glGetTexLevelParameter[if]v(target=0x%x)", target
);
926 if (level
< 0 || level
>= maxLevels
) {
927 _mesa_error( ctx
, GL_INVALID_VALUE
, "glGetTexLevelParameter[if]v" );
931 texObj
= _mesa_select_tex_object(ctx
, texUnit
, target
);
933 img
= _mesa_select_tex_image(ctx
, texObj
, target
, level
);
934 if (!img
|| img
->TexFormat
== MESA_FORMAT_NONE
) {
935 /* undefined texture image */
936 if (pname
== GL_TEXTURE_COMPONENTS
)
943 texFormat
= img
->TexFormat
;
946 case GL_TEXTURE_WIDTH
:
947 *params
= img
->Width
;
949 case GL_TEXTURE_HEIGHT
:
950 *params
= img
->Height
;
952 case GL_TEXTURE_DEPTH
:
953 *params
= img
->Depth
;
955 case GL_TEXTURE_INTERNAL_FORMAT
:
956 if (_mesa_is_format_compressed(texFormat
)) {
957 /* need to return the actual compressed format */
958 *params
= _mesa_compressed_format_to_glenum(ctx
, texFormat
);
961 /* If the true internal format is not compressed but the user
962 * requested a generic compressed format, we have to return the
963 * generic base format that matches.
965 * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
967 * "If no specific compressed format is available,
968 * internalformat is instead replaced by the corresponding base
971 * Otherwise just return the user's requested internal format
974 _mesa_gl_compressed_format_base_format(img
->InternalFormat
);
976 *params
= (f
!= 0) ? f
: img
->InternalFormat
;
979 case GL_TEXTURE_BORDER
:
980 *params
= img
->Border
;
982 case GL_TEXTURE_RED_SIZE
:
983 case GL_TEXTURE_GREEN_SIZE
:
984 case GL_TEXTURE_BLUE_SIZE
:
985 case GL_TEXTURE_ALPHA_SIZE
:
986 if (_mesa_base_format_has_channel(img
->_BaseFormat
, pname
))
987 *params
= _mesa_get_format_bits(texFormat
, pname
);
991 case GL_TEXTURE_INTENSITY_SIZE
:
992 case GL_TEXTURE_LUMINANCE_SIZE
:
993 if (_mesa_base_format_has_channel(img
->_BaseFormat
, pname
)) {
994 *params
= _mesa_get_format_bits(texFormat
, pname
);
996 /* intensity or luminance is probably stored as RGB[A] */
997 *params
= MIN2(_mesa_get_format_bits(texFormat
,
998 GL_TEXTURE_RED_SIZE
),
999 _mesa_get_format_bits(texFormat
,
1000 GL_TEXTURE_GREEN_SIZE
));
1007 case GL_TEXTURE_DEPTH_SIZE_ARB
:
1008 if (!ctx
->Extensions
.ARB_depth_texture
)
1010 *params
= _mesa_get_format_bits(texFormat
, pname
);
1012 case GL_TEXTURE_STENCIL_SIZE_EXT
:
1013 if (!ctx
->Extensions
.EXT_packed_depth_stencil
&&
1014 !ctx
->Extensions
.ARB_framebuffer_object
)
1016 *params
= _mesa_get_format_bits(texFormat
, pname
);
1018 case GL_TEXTURE_SHARED_SIZE
:
1019 if (ctx
->VersionMajor
< 3 &&
1020 !ctx
->Extensions
.EXT_texture_shared_exponent
)
1022 *params
= texFormat
== MESA_FORMAT_RGB9_E5_FLOAT
? 5 : 0;
1025 /* GL_ARB_texture_compression */
1026 case GL_TEXTURE_COMPRESSED_IMAGE_SIZE
:
1027 if (_mesa_is_format_compressed(texFormat
) &&
1028 !_mesa_is_proxy_texture(target
)) {
1029 *params
= _mesa_format_image_size(texFormat
, img
->Width
,
1030 img
->Height
, img
->Depth
);
1033 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1034 "glGetTexLevelParameter[if]v(pname)");
1037 case GL_TEXTURE_COMPRESSED
:
1038 *params
= (GLint
) _mesa_is_format_compressed(texFormat
);
1041 /* GL_ARB_texture_float */
1042 case GL_TEXTURE_RED_TYPE_ARB
:
1043 case GL_TEXTURE_GREEN_TYPE_ARB
:
1044 case GL_TEXTURE_BLUE_TYPE_ARB
:
1045 case GL_TEXTURE_ALPHA_TYPE_ARB
:
1046 case GL_TEXTURE_LUMINANCE_TYPE_ARB
:
1047 case GL_TEXTURE_INTENSITY_TYPE_ARB
:
1048 case GL_TEXTURE_DEPTH_TYPE_ARB
:
1049 if (!ctx
->Extensions
.ARB_texture_float
)
1051 if (_mesa_base_format_has_channel(img
->_BaseFormat
, pname
))
1052 *params
= _mesa_get_format_datatype(texFormat
);
1061 /* no error if we get here */
1065 _mesa_error(ctx
, GL_INVALID_ENUM
,
1066 "glGetTexLevelParameter[if]v(pname=%s)",
1067 _mesa_lookup_enum_by_nr(pname
));
1073 _mesa_GetTexParameterfv( GLenum target
, GLenum pname
, GLfloat
*params
)
1075 struct gl_texture_object
*obj
;
1076 GET_CURRENT_CONTEXT(ctx
);
1077 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1079 obj
= get_texobj(ctx
, target
, GL_TRUE
);
1083 _mesa_lock_texture(ctx
, obj
);
1085 case GL_TEXTURE_MAG_FILTER
:
1086 *params
= ENUM_TO_FLOAT(obj
->Sampler
.MagFilter
);
1088 case GL_TEXTURE_MIN_FILTER
:
1089 *params
= ENUM_TO_FLOAT(obj
->Sampler
.MinFilter
);
1091 case GL_TEXTURE_WRAP_S
:
1092 *params
= ENUM_TO_FLOAT(obj
->Sampler
.WrapS
);
1094 case GL_TEXTURE_WRAP_T
:
1095 *params
= ENUM_TO_FLOAT(obj
->Sampler
.WrapT
);
1097 case GL_TEXTURE_WRAP_R
:
1098 *params
= ENUM_TO_FLOAT(obj
->Sampler
.WrapR
);
1100 case GL_TEXTURE_BORDER_COLOR
:
1101 if (ctx
->NewState
& (_NEW_BUFFERS
| _NEW_FRAG_CLAMP
))
1102 _mesa_update_state_locked(ctx
);
1103 if (ctx
->Color
._ClampFragmentColor
) {
1104 params
[0] = CLAMP(obj
->Sampler
.BorderColor
.f
[0], 0.0F
, 1.0F
);
1105 params
[1] = CLAMP(obj
->Sampler
.BorderColor
.f
[1], 0.0F
, 1.0F
);
1106 params
[2] = CLAMP(obj
->Sampler
.BorderColor
.f
[2], 0.0F
, 1.0F
);
1107 params
[3] = CLAMP(obj
->Sampler
.BorderColor
.f
[3], 0.0F
, 1.0F
);
1110 params
[0] = obj
->Sampler
.BorderColor
.f
[0];
1111 params
[1] = obj
->Sampler
.BorderColor
.f
[1];
1112 params
[2] = obj
->Sampler
.BorderColor
.f
[2];
1113 params
[3] = obj
->Sampler
.BorderColor
.f
[3];
1116 case GL_TEXTURE_RESIDENT
:
1119 case GL_TEXTURE_PRIORITY
:
1120 *params
= obj
->Priority
;
1122 case GL_TEXTURE_MIN_LOD
:
1123 *params
= obj
->Sampler
.MinLod
;
1125 case GL_TEXTURE_MAX_LOD
:
1126 *params
= obj
->Sampler
.MaxLod
;
1128 case GL_TEXTURE_BASE_LEVEL
:
1129 *params
= (GLfloat
) obj
->BaseLevel
;
1131 case GL_TEXTURE_MAX_LEVEL
:
1132 *params
= (GLfloat
) obj
->MaxLevel
;
1134 case GL_TEXTURE_MAX_ANISOTROPY_EXT
:
1135 if (!ctx
->Extensions
.EXT_texture_filter_anisotropic
)
1137 *params
= obj
->Sampler
.MaxAnisotropy
;
1139 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB
:
1140 if (!ctx
->Extensions
.ARB_shadow_ambient
)
1142 *params
= obj
->Sampler
.CompareFailValue
;
1144 case GL_GENERATE_MIPMAP_SGIS
:
1145 *params
= (GLfloat
) obj
->GenerateMipmap
;
1147 case GL_TEXTURE_COMPARE_MODE_ARB
:
1148 if (!ctx
->Extensions
.ARB_shadow
)
1150 *params
= (GLfloat
) obj
->Sampler
.CompareMode
;
1152 case GL_TEXTURE_COMPARE_FUNC_ARB
:
1153 if (!ctx
->Extensions
.ARB_shadow
)
1155 *params
= (GLfloat
) obj
->Sampler
.CompareFunc
;
1157 case GL_DEPTH_TEXTURE_MODE_ARB
:
1158 if (!ctx
->Extensions
.ARB_depth_texture
)
1160 *params
= (GLfloat
) obj
->Sampler
.DepthMode
;
1162 case GL_TEXTURE_LOD_BIAS
:
1163 *params
= obj
->Sampler
.LodBias
;
1165 #if FEATURE_OES_draw_texture
1166 case GL_TEXTURE_CROP_RECT_OES
:
1167 params
[0] = obj
->CropRect
[0];
1168 params
[1] = obj
->CropRect
[1];
1169 params
[2] = obj
->CropRect
[2];
1170 params
[3] = obj
->CropRect
[3];
1174 case GL_TEXTURE_SWIZZLE_R_EXT
:
1175 case GL_TEXTURE_SWIZZLE_G_EXT
:
1176 case GL_TEXTURE_SWIZZLE_B_EXT
:
1177 case GL_TEXTURE_SWIZZLE_A_EXT
:
1178 if (!ctx
->Extensions
.EXT_texture_swizzle
)
1180 *params
= (GLfloat
) obj
->Swizzle
[pname
- GL_TEXTURE_SWIZZLE_R_EXT
];
1183 case GL_TEXTURE_SWIZZLE_RGBA_EXT
:
1184 if (!ctx
->Extensions
.EXT_texture_swizzle
) {
1189 for (comp
= 0; comp
< 4; comp
++) {
1190 params
[comp
] = (GLfloat
) obj
->Swizzle
[comp
];
1195 case GL_TEXTURE_CUBE_MAP_SEAMLESS
:
1196 if (!ctx
->Extensions
.AMD_seamless_cubemap_per_texture
)
1198 *params
= (GLfloat
) obj
->Sampler
.CubeMapSeamless
;
1201 case GL_TEXTURE_IMMUTABLE_FORMAT
:
1202 if (!ctx
->Extensions
.ARB_texture_storage
)
1204 *params
= (GLfloat
) obj
->Immutable
;
1211 /* no error if we get here */
1212 _mesa_unlock_texture(ctx
, obj
);
1216 _mesa_unlock_texture(ctx
, obj
);
1217 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetTexParameterfv(pname=0x%x)", pname
);
1222 _mesa_GetTexParameteriv( GLenum target
, GLenum pname
, GLint
*params
)
1224 struct gl_texture_object
*obj
;
1225 GET_CURRENT_CONTEXT(ctx
);
1226 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1228 obj
= get_texobj(ctx
, target
, GL_TRUE
);
1232 _mesa_lock_texture(ctx
, obj
);
1234 case GL_TEXTURE_MAG_FILTER
:
1235 *params
= (GLint
) obj
->Sampler
.MagFilter
;
1237 case GL_TEXTURE_MIN_FILTER
:
1238 *params
= (GLint
) obj
->Sampler
.MinFilter
;
1240 case GL_TEXTURE_WRAP_S
:
1241 *params
= (GLint
) obj
->Sampler
.WrapS
;
1243 case GL_TEXTURE_WRAP_T
:
1244 *params
= (GLint
) obj
->Sampler
.WrapT
;
1246 case GL_TEXTURE_WRAP_R
:
1247 *params
= (GLint
) obj
->Sampler
.WrapR
;
1249 case GL_TEXTURE_BORDER_COLOR
:
1252 b
[0] = CLAMP(obj
->Sampler
.BorderColor
.f
[0], 0.0F
, 1.0F
);
1253 b
[1] = CLAMP(obj
->Sampler
.BorderColor
.f
[1], 0.0F
, 1.0F
);
1254 b
[2] = CLAMP(obj
->Sampler
.BorderColor
.f
[2], 0.0F
, 1.0F
);
1255 b
[3] = CLAMP(obj
->Sampler
.BorderColor
.f
[3], 0.0F
, 1.0F
);
1256 params
[0] = FLOAT_TO_INT(b
[0]);
1257 params
[1] = FLOAT_TO_INT(b
[1]);
1258 params
[2] = FLOAT_TO_INT(b
[2]);
1259 params
[3] = FLOAT_TO_INT(b
[3]);
1262 case GL_TEXTURE_RESIDENT
:
1265 case GL_TEXTURE_PRIORITY
:
1266 *params
= FLOAT_TO_INT(obj
->Priority
);
1268 case GL_TEXTURE_MIN_LOD
:
1269 *params
= (GLint
) obj
->Sampler
.MinLod
;
1271 case GL_TEXTURE_MAX_LOD
:
1272 *params
= (GLint
) obj
->Sampler
.MaxLod
;
1274 case GL_TEXTURE_BASE_LEVEL
:
1275 *params
= obj
->BaseLevel
;
1277 case GL_TEXTURE_MAX_LEVEL
:
1278 *params
= obj
->MaxLevel
;
1280 case GL_TEXTURE_MAX_ANISOTROPY_EXT
:
1281 if (!ctx
->Extensions
.EXT_texture_filter_anisotropic
)
1283 *params
= (GLint
) obj
->Sampler
.MaxAnisotropy
;
1285 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB
:
1286 if (!ctx
->Extensions
.ARB_shadow_ambient
)
1288 *params
= (GLint
) FLOAT_TO_INT(obj
->Sampler
.CompareFailValue
);
1290 case GL_GENERATE_MIPMAP_SGIS
:
1291 *params
= (GLint
) obj
->GenerateMipmap
;
1293 case GL_TEXTURE_COMPARE_MODE_ARB
:
1294 if (!ctx
->Extensions
.ARB_shadow
)
1296 *params
= (GLint
) obj
->Sampler
.CompareMode
;
1298 case GL_TEXTURE_COMPARE_FUNC_ARB
:
1299 if (!ctx
->Extensions
.ARB_shadow
)
1301 *params
= (GLint
) obj
->Sampler
.CompareFunc
;
1303 case GL_DEPTH_TEXTURE_MODE_ARB
:
1304 if (!ctx
->Extensions
.ARB_depth_texture
)
1306 *params
= (GLint
) obj
->Sampler
.DepthMode
;
1308 case GL_TEXTURE_LOD_BIAS
:
1309 *params
= (GLint
) obj
->Sampler
.LodBias
;
1311 #if FEATURE_OES_draw_texture
1312 case GL_TEXTURE_CROP_RECT_OES
:
1313 params
[0] = obj
->CropRect
[0];
1314 params
[1] = obj
->CropRect
[1];
1315 params
[2] = obj
->CropRect
[2];
1316 params
[3] = obj
->CropRect
[3];
1319 case GL_TEXTURE_SWIZZLE_R_EXT
:
1320 case GL_TEXTURE_SWIZZLE_G_EXT
:
1321 case GL_TEXTURE_SWIZZLE_B_EXT
:
1322 case GL_TEXTURE_SWIZZLE_A_EXT
:
1323 if (!ctx
->Extensions
.EXT_texture_swizzle
)
1325 *params
= obj
->Swizzle
[pname
- GL_TEXTURE_SWIZZLE_R_EXT
];
1328 case GL_TEXTURE_SWIZZLE_RGBA_EXT
:
1329 if (!ctx
->Extensions
.EXT_texture_swizzle
)
1331 COPY_4V(params
, obj
->Swizzle
);
1334 case GL_TEXTURE_CUBE_MAP_SEAMLESS
:
1335 if (!ctx
->Extensions
.AMD_seamless_cubemap_per_texture
)
1337 *params
= (GLint
) obj
->Sampler
.CubeMapSeamless
;
1340 case GL_TEXTURE_IMMUTABLE_FORMAT
:
1341 if (!ctx
->Extensions
.ARB_texture_storage
)
1343 *params
= (GLint
) obj
->Immutable
;
1346 case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES
:
1347 if (!ctx
->Extensions
.OES_EGL_image_external
)
1349 *params
= obj
->RequiredTextureImageUnits
;
1356 /* no error if we get here */
1357 _mesa_unlock_texture(ctx
, obj
);
1361 _mesa_unlock_texture(ctx
, obj
);
1362 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetTexParameteriv(pname=0x%x)", pname
);
1366 /** New in GL 3.0 */
1368 _mesa_GetTexParameterIiv(GLenum target
, GLenum pname
, GLint
*params
)
1370 struct gl_texture_object
*texObj
;
1371 GET_CURRENT_CONTEXT(ctx
);
1372 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1374 texObj
= get_texobj(ctx
, target
, GL_TRUE
);
1379 case GL_TEXTURE_BORDER_COLOR
:
1380 COPY_4V(params
, texObj
->Sampler
.BorderColor
.i
);
1383 _mesa_GetTexParameteriv(target
, pname
, params
);
1388 /** New in GL 3.0 */
1390 _mesa_GetTexParameterIuiv(GLenum target
, GLenum pname
, GLuint
*params
)
1392 struct gl_texture_object
*texObj
;
1393 GET_CURRENT_CONTEXT(ctx
);
1394 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1396 texObj
= get_texobj(ctx
, target
, GL_TRUE
);
1401 case GL_TEXTURE_BORDER_COLOR
:
1402 COPY_4V(params
, texObj
->Sampler
.BorderColor
.i
);
1407 _mesa_GetTexParameteriv(target
, pname
, ip
);
1409 if (pname
== GL_TEXTURE_SWIZZLE_RGBA_EXT
||
1410 pname
== GL_TEXTURE_CROP_RECT_OES
) {