1 #include <msp/gl/extensions/arb_direct_state_access.h>
2 #include <msp/gl/extensions/arb_shadow.h>
3 #include <msp/gl/extensions/arb_texture_swizzle.h>
4 #include <msp/gl/extensions/ext_framebuffer_object.h>
5 #include <msp/gl/extensions/ext_texture3d.h>
6 #include <msp/gl/extensions/ext_texture_filter_anisotropic.h>
7 #include <msp/gl/extensions/sgis_generate_mipmap.h>
8 #include <msp/io/memory.h>
9 #include <msp/strings/format.h>
12 #include "resourcemanager.h"
13 #include "resources.h"
22 void operator>>(const LexicalConverter &c, TextureFilter &tf)
24 if(c.get()=="NEAREST")
26 else if(c.get()=="LINEAR")
28 else if(c.get()=="NEAREST_MIPMAP_NEAREST")
29 tf = NEAREST_MIPMAP_NEAREST;
30 else if(c.get()=="NEAREST_MIPMAP_LINEAR")
31 tf = NEAREST_MIPMAP_LINEAR;
32 else if(c.get()=="LINEAR_MIPMAP_NEAREST")
33 tf = LINEAR_MIPMAP_NEAREST;
34 else if(c.get()=="LINEAR_MIPMAP_LINEAR")
35 tf = LINEAR_MIPMAP_LINEAR;
37 throw lexical_error(format("conversion of '%s' to TextureFilter", c.get()));
41 void operator>>(const LexicalConverter &c, TextureWrap &tw)
45 else if(c.get()=="CLAMP_TO_EDGE")
47 else if(c.get()=="MIRRORED_REPEAT")
50 throw lexical_error(format("conversion of '%s' to TextureWrap", c.get()));
54 int Texture::swizzle_orders[] =
56 GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA,
57 GL_RED, GL_RED, GL_RED, GL_ONE,
58 GL_RED, GL_RED, GL_RED, GL_GREEN
61 Texture::Texture(GLenum t, ResourceManager *m):
65 min_filter(NEAREST_MIPMAP_LINEAR),
79 else if(ARB_direct_state_access)
80 glCreateTextures(target, 1, &id);
82 glGenTextures(1, &id);
87 while(TexUnit *unit = TexUnit::find_unit(this))
88 unbind_from(unit->get_index());
91 glDeleteTextures(1, &id);
94 DataType Texture::get_alloc_type(PixelFormat fmt)
96 return (get_base_pixelformat(fmt)==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
99 void Texture::set_internal_format(PixelFormat fmt)
101 if(!get_component_size(fmt) && OES_required_internalformat)
102 fmt = get_default_sized_pixelformat(fmt);
104 FormatSwizzle swiz = NO_SWIZZLE;
105 if(ARB_texture_rg && ARB_texture_swizzle)
107 if(fmt==LUMINANCE8 || fmt==SLUMINANCE8)
110 swiz = R_TO_LUMINANCE;
112 else if(fmt==LUMINANCE8_ALPHA8 || fmt==SLUMINANCE8_ALPHA8)
115 swiz = RG_TO_LUMINANCE_ALPHA;
119 require_pixelformat(fmt);
123 update_parameter(FORMAT_SWIZZLE);
126 PixelFormat Texture::get_upload_format(PixelFormat fmt) const
128 if(fmt==LUMINANCE || fmt==LUMINANCE_ALPHA)
129 return get_base_pixelformat(ifmt);
134 void Texture::update_parameter(int mask) const
136 if(!ARB_direct_state_access && TexUnit::current().get_texture()!=this)
138 TexUnit *unit = TexUnit::find_unit(this);
141 dirty_params |= mask;
149 set_parameter_i(GL_TEXTURE_MIN_FILTER, min_filter);
151 set_parameter_i(GL_TEXTURE_MAG_FILTER, mag_filter);
152 if(mask&MAX_ANISOTROPY)
153 set_parameter_f(GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
155 set_parameter_i(GL_TEXTURE_WRAP_S, wrap_s);
157 set_parameter_i(GL_TEXTURE_WRAP_T, wrap_t);
159 set_parameter_i(GL_TEXTURE_WRAP_R, wrap_r);
160 if(mask&GENERATE_MIPMAP)
161 set_parameter_i(GL_GENERATE_MIPMAP, auto_gen_mipmap!=0);
163 set_parameter_i(GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
164 if(mask&COMPARE_FUNC)
165 set_parameter_i(GL_TEXTURE_COMPARE_FUNC, cmp_func);
166 if(mask&FORMAT_SWIZZLE)
168 if(get_gl_api()==OPENGL_ES2)
170 set_parameter_i(GL_TEXTURE_SWIZZLE_R, swizzle_orders[swizzle*4]);
171 set_parameter_i(GL_TEXTURE_SWIZZLE_G, swizzle_orders[swizzle*4+1]);
172 set_parameter_i(GL_TEXTURE_SWIZZLE_B, swizzle_orders[swizzle*4+2]);
173 set_parameter_i(GL_TEXTURE_SWIZZLE_A, swizzle_orders[swizzle*4+3]);
177 if(ARB_direct_state_access)
178 glTextureParameteriv(id, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
180 glTexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
183 if(mask&MIPMAP_LEVELS)
184 set_parameter_i(GL_TEXTURE_MAX_LEVEL, (mipmap_levels ? mipmap_levels-1 : 1000));
187 void Texture::set_parameter_i(GLenum param, int value) const
189 if(ARB_direct_state_access)
190 glTextureParameteri(id, param, value);
192 glTexParameteri(target, param, value);
195 void Texture::set_parameter_f(GLenum param, float value) const
197 if(ARB_direct_state_access)
198 glTextureParameterf(id, param, value);
200 glTexParameterf(target, param, value);
203 void Texture::set_min_filter(TextureFilter f)
206 update_parameter(MIN_FILTER);
209 void Texture::set_mag_filter(TextureFilter f)
212 update_parameter(MAG_FILTER);
215 void Texture::set_filter(TextureFilter f)
218 set_mag_filter(f==NEAREST ? NEAREST : LINEAR);
221 void Texture::set_mipmap_levels(unsigned l)
224 update_parameter(MIPMAP_LEVELS);
227 void Texture::set_max_anisotropy(float a)
230 throw invalid_argument("Texture::set_max_anisotropy");
232 static Require _req(EXT_texture_filter_anisotropic);
234 if(EXT_texture_filter_anisotropic)
235 update_parameter(MAX_ANISOTROPY);
238 void Texture::set_wrap(TextureWrap w)
246 void Texture::set_wrap_s(TextureWrap w)
249 update_parameter(WRAP_S);
252 void Texture::set_wrap_t(TextureWrap w)
255 update_parameter(WRAP_T);
258 void Texture::set_wrap_r(TextureWrap w)
260 static Require _req(EXT_texture3D);
262 update_parameter(WRAP_R);
265 bool Texture::can_generate_mipmap()
267 return (EXT_framebuffer_object || SGIS_generate_mipmap);
270 void Texture::generate_mipmap()
272 // glGenerateMipmap is defined here
273 static Require _req(EXT_framebuffer_object);
275 if(ARB_direct_state_access)
276 glGenerateTextureMipmap(id);
279 BindRestore _bind(this);
280 glGenerateMipmap(target);
284 void Texture::set_auto_generate_mipmap(bool gm)
286 if(EXT_framebuffer_object)
287 auto_gen_mipmap = gm;
291 static Require _req(SGIS_generate_mipmap);
293 auto_gen_mipmap = gm*2;
294 update_parameter(GENERATE_MIPMAP);
298 void Texture::set_compare_enabled(bool c)
301 static Require _req(ARB_shadow);
303 update_parameter(COMPARE);
306 void Texture::set_compare_func(Predicate f)
308 static Require _req(ARB_shadow);
310 update_parameter(COMPARE_FUNC);
313 void Texture::load_image(const string &fn, bool srgb)
321 void Texture::bind_to(unsigned i, bool legacy) const
326 manager->resource_used(*this);
334 legacy = (legacy && is_legacy_target(target));
336 TexUnit &unit = TexUnit::get_unit(i);
337 const Texture *old = unit.get_texture();
338 bool old_legacy = unit.get_texture_legacy();
339 if(unit.set_texture(this, legacy))
342 manager->resource_used(*this);
344 if(ARB_direct_state_access && !old_legacy && (!unit.supports_legacy() || !legacy))
345 glBindTextureUnit(i, id);
349 if(unit.supports_legacy())
351 if(old && old->target!=target && old_legacy)
352 glDisable(old->target);
353 if((!old || old->target!=target) && legacy)
356 glBindTexture(target, id);
361 update_parameter(dirty_params);
367 const Texture *Texture::current(unsigned i)
369 return TexUnit::get_unit(i).get_texture();
372 void Texture::unbind_from(unsigned i)
374 TexUnit &unit = TexUnit::get_unit(i);
375 const Texture *cur = unit.get_texture();
376 bool legacy = unit.get_texture_legacy();
377 if(unit.set_texture(0))
379 if(ARB_direct_state_access && !legacy)
380 glBindTextureUnit(i, 0);
384 glBindTexture(cur->target, 0);
385 if(unit.supports_legacy() && legacy)
386 glDisable(cur->target);
391 bool Texture::is_legacy_target(GLenum target)
393 return target<GL_TEXTURE_1D_ARRAY;
397 Texture::Loader::Loader(Texture &t):
398 DataFile::CollectionObjectLoader<Texture>(t, 0)
403 Texture::Loader::Loader(Texture &t, Collection &c):
404 DataFile::CollectionObjectLoader<Texture>(t, &c)
409 void Texture::Loader::init()
411 if(Resources *res = dynamic_cast<Resources *>(coll))
412 srgb = res->get_srgb_conversion();
416 add("external_image", &Loader::external_image);
417 add("filter", &Loader::filter);
418 add("generate_mipmap", &Loader::generate_mipmap);
419 add("image_data", &Loader::image_data);
420 add("mag_filter", &Loader::mag_filter);
421 add("max_anisotropy", &Loader::max_anisotropy);
422 add("min_filter", &Loader::min_filter);
423 add("mipmap_levels", &Loader::mipmap_levels);
424 add("wrap", &Loader::wrap);
425 add("wrap_r", &Loader::wrap_r);
426 add("wrap_s", &Loader::wrap_s);
427 add("wrap_t", &Loader::wrap_t);
430 void Texture::Loader::external_image(const string &fn)
433 RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
435 throw IO::file_not_found(fn);
438 obj.image(img, srgb);
441 void Texture::Loader::filter(TextureFilter f)
446 void Texture::Loader::generate_mipmap(bool gm)
448 obj.set_auto_generate_mipmap(gm);
451 void Texture::Loader::image_data(const string &data)
454 IO::Memory mem(data.data(), data.size());
457 obj.image(img, srgb);
460 void Texture::Loader::mag_filter(TextureFilter f)
462 obj.set_mag_filter(f);
465 void Texture::Loader::max_anisotropy(float a)
467 obj.set_max_anisotropy(a);
470 void Texture::Loader::min_filter(TextureFilter f)
472 obj.set_min_filter(f);
475 void Texture::Loader::mipmap_levels(unsigned l)
477 obj.set_mipmap_levels(l);
480 void Texture::Loader::wrap(TextureWrap w)
485 void Texture::Loader::wrap_r(TextureWrap w)
490 void Texture::Loader::wrap_s(TextureWrap w)
495 void Texture::Loader::wrap_t(TextureWrap w)
501 bool is_mipmapped(TextureFilter filter)
503 return (filter==NEAREST_MIPMAP_NEAREST || filter==NEAREST_MIPMAP_LINEAR ||
504 filter==LINEAR_MIPMAP_NEAREST || filter==LINEAR_MIPMAP_LINEAR);