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) {