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>
11 #include "resourcemanager.h"
12 #include "resources.h"
21 void operator>>(const LexicalConverter &c, TextureFilter &tf)
23 if(c.get()=="NEAREST")
25 else if(c.get()=="LINEAR")
27 else if(c.get()=="NEAREST_MIPMAP_NEAREST")
28 tf = NEAREST_MIPMAP_NEAREST;
29 else if(c.get()=="NEAREST_MIPMAP_LINEAR")
30 tf = NEAREST_MIPMAP_LINEAR;
31 else if(c.get()=="LINEAR_MIPMAP_NEAREST")
32 tf = LINEAR_MIPMAP_NEAREST;
33 else if(c.get()=="LINEAR_MIPMAP_LINEAR")
34 tf = LINEAR_MIPMAP_LINEAR;
36 throw lexical_error(format("conversion of '%s' to TextureFilter", c.get()));
40 void operator>>(const LexicalConverter &c, TextureWrap &tw)
44 else if(c.get()=="CLAMP_TO_EDGE")
46 else if(c.get()=="MIRRORED_REPEAT")
49 throw lexical_error(format("conversion of '%s' to TextureWrap", c.get()));
53 int Texture::swizzle_orders[] =
55 GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA,
56 GL_RED, GL_RED, GL_RED, GL_ONE,
57 GL_RED, GL_RED, GL_RED, GL_GREEN
60 Texture::Texture(GLenum t, ResourceManager *m):
64 min_filter(NEAREST_MIPMAP_LINEAR),
78 else if(ARB_direct_state_access)
79 glCreateTextures(target, 1, &id);
81 glGenTextures(1, &id);
86 while(TexUnit *unit = TexUnit::find_unit(this))
87 unbind_from(unit->get_index());
90 glDeleteTextures(1, &id);
93 DataType Texture::get_alloc_type(PixelFormat fmt)
95 return (get_base_pixelformat(fmt)==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
98 void Texture::set_internal_format(PixelFormat fmt)
100 if(!get_component_size(fmt) && OES_required_internalformat)
101 fmt = get_default_sized_pixelformat(fmt);
103 FormatSwizzle swiz = NO_SWIZZLE;
104 if(ARB_texture_rg && ARB_texture_swizzle)
106 if(fmt==LUMINANCE8 || fmt==SLUMINANCE8)
109 swiz = R_TO_LUMINANCE;
111 else if(fmt==LUMINANCE8_ALPHA8 || fmt==SLUMINANCE8_ALPHA8)
114 swiz = RG_TO_LUMINANCE_ALPHA;
118 require_pixelformat(fmt);
122 update_parameter(FORMAT_SWIZZLE);
125 PixelFormat Texture::get_upload_format(PixelFormat fmt) const
127 if(fmt==LUMINANCE || fmt==LUMINANCE_ALPHA)
128 return get_base_pixelformat(ifmt);
133 void Texture::update_parameter(int mask) const
135 if(!ARB_direct_state_access && TexUnit::current().get_texture()!=this)
137 TexUnit *unit = TexUnit::find_unit(this);
140 dirty_params |= mask;
148 set_parameter_i(GL_TEXTURE_MIN_FILTER, min_filter);
150 set_parameter_i(GL_TEXTURE_MAG_FILTER, mag_filter);
151 if(mask&MAX_ANISOTROPY)
152 set_parameter_f(GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
154 set_parameter_i(GL_TEXTURE_WRAP_S, wrap_s);
156 set_parameter_i(GL_TEXTURE_WRAP_T, wrap_t);
158 set_parameter_i(GL_TEXTURE_WRAP_R, wrap_r);
159 if(mask&GENERATE_MIPMAP)
160 set_parameter_i(GL_GENERATE_MIPMAP, gen_mipmap);
162 set_parameter_i(GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
163 if(mask&COMPARE_FUNC)
164 set_parameter_i(GL_TEXTURE_COMPARE_FUNC, cmp_func);
165 if(mask&FORMAT_SWIZZLE)
167 if(get_gl_api()==OPENGL_ES2)
169 set_parameter_i(GL_TEXTURE_SWIZZLE_R, swizzle_orders[swizzle*4]);
170 set_parameter_i(GL_TEXTURE_SWIZZLE_G, swizzle_orders[swizzle*4+1]);
171 set_parameter_i(GL_TEXTURE_SWIZZLE_B, swizzle_orders[swizzle*4+2]);
172 set_parameter_i(GL_TEXTURE_SWIZZLE_A, swizzle_orders[swizzle*4+3]);
176 if(ARB_direct_state_access)
177 glTextureParameteriv(id, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
179 glTexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
182 if(mask&MIPMAP_LEVELS)
183 set_parameter_i(GL_TEXTURE_MAX_LEVEL, (mipmap_levels ? mipmap_levels-1 : 1000));
186 void Texture::set_parameter_i(GLenum param, int value) const
188 if(ARB_direct_state_access)
189 glTextureParameteri(id, param, value);
191 glTexParameteri(target, param, value);
194 void Texture::set_parameter_f(GLenum param, float value) const
196 if(ARB_direct_state_access)
197 glTextureParameterf(id, param, value);
199 glTexParameterf(target, param, value);
202 void Texture::set_min_filter(TextureFilter f)
205 update_parameter(MIN_FILTER);
208 void Texture::set_mag_filter(TextureFilter f)
211 update_parameter(MAG_FILTER);
214 void Texture::set_filter(TextureFilter f)
217 set_mag_filter(f==NEAREST ? NEAREST : LINEAR);
220 void Texture::set_mipmap_levels(unsigned l)
223 update_parameter(MIPMAP_LEVELS);
226 void Texture::set_max_anisotropy(float a)
229 throw invalid_argument("Texture::set_max_anisotropy");
231 static Require _req(EXT_texture_filter_anisotropic);
233 if(EXT_texture_filter_anisotropic)
234 update_parameter(MAX_ANISOTROPY);
237 void Texture::set_wrap(TextureWrap w)
245 void Texture::set_wrap_s(TextureWrap w)
248 update_parameter(WRAP_S);
251 void Texture::set_wrap_t(TextureWrap w)
254 update_parameter(WRAP_T);
257 void Texture::set_wrap_r(TextureWrap w)
259 static Require _req(EXT_texture3D);
261 update_parameter(WRAP_R);
264 bool Texture::can_generate_mipmap()
266 return (EXT_framebuffer_object || SGIS_generate_mipmap);
269 void Texture::set_generate_mipmap(bool gm)
271 if(gm && !EXT_framebuffer_object)
272 static Require _req(SGIS_generate_mipmap);
274 if(!EXT_framebuffer_object)
275 update_parameter(GENERATE_MIPMAP);
278 void Texture::auto_generate_mipmap()
280 // glGenerateMipmap is defined here
281 if(EXT_framebuffer_object)
283 if(ARB_direct_state_access)
284 glGenerateTextureMipmap(id);
286 glGenerateMipmap(target);
290 void Texture::set_compare_enabled(bool c)
293 static Require _req(ARB_shadow);
295 update_parameter(COMPARE);
298 void Texture::set_compare_func(Predicate f)
300 static Require _req(ARB_shadow);
302 update_parameter(COMPARE_FUNC);
305 void Texture::load_image(const string &fn, bool srgb)
313 void Texture::bind_to(unsigned i, bool legacy) const
318 manager->resource_used(*this);
326 legacy = (legacy && is_legacy_target(target));
328 TexUnit &unit = TexUnit::get_unit(i);
329 const Texture *old = unit.get_texture();
330 bool old_legacy = unit.get_texture_legacy();
331 if(unit.set_texture(this, legacy))
334 manager->resource_used(*this);
336 if(ARB_direct_state_access && !old_legacy && (!unit.supports_legacy() || !legacy))
337 glBindTextureUnit(i, id);
341 if(unit.supports_legacy())
343 if(old && old->target!=target && old_legacy)
344 glDisable(old->target);
345 if((!old || old->target!=target) && legacy)
348 glBindTexture(target, id);
353 update_parameter(dirty_params);
359 const Texture *Texture::current(unsigned i)
361 return TexUnit::get_unit(i).get_texture();
364 void Texture::unbind_from(unsigned i)
366 TexUnit &unit = TexUnit::get_unit(i);
367 const Texture *cur = unit.get_texture();
368 bool legacy = unit.get_texture_legacy();
369 if(unit.set_texture(0))
371 if(ARB_direct_state_access && !legacy)
372 glBindTextureUnit(i, 0);
376 glBindTexture(cur->target, 0);
377 if(unit.supports_legacy() && legacy)
378 glDisable(cur->target);
383 bool Texture::is_legacy_target(GLenum target)
385 return target<GL_TEXTURE_1D_ARRAY;
389 Texture::Loader::Loader(Texture &t):
390 DataFile::CollectionObjectLoader<Texture>(t, 0)
395 Texture::Loader::Loader(Texture &t, Collection &c):
396 DataFile::CollectionObjectLoader<Texture>(t, &c)
401 void Texture::Loader::init()
403 if(Resources *res = dynamic_cast<Resources *>(coll))
404 srgb = res->get_srgb_conversion();
408 add("external_image", &Loader::external_image);
409 add("filter", &Loader::filter);
410 add("generate_mipmap", &Loader::generate_mipmap);
411 add("image_data", &Loader::image_data);
412 add("mag_filter", &Loader::mag_filter);
413 add("max_anisotropy", &Loader::max_anisotropy);
414 add("min_filter", &Loader::min_filter);
415 add("mipmap_levels", &Loader::mipmap_levels);
416 add("wrap", &Loader::wrap);
417 add("wrap_r", &Loader::wrap_r);
418 add("wrap_s", &Loader::wrap_s);
419 add("wrap_t", &Loader::wrap_t);
422 void Texture::Loader::external_image(const string &fn)
425 RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
428 obj.image(img, srgb);
431 void Texture::Loader::filter(TextureFilter f)
436 void Texture::Loader::generate_mipmap(bool gm)
438 obj.set_generate_mipmap(gm);
441 void Texture::Loader::image_data(const string &data)
444 IO::Memory mem(data.data(), data.size());
447 obj.image(img, srgb);
450 void Texture::Loader::mag_filter(TextureFilter f)
452 obj.set_mag_filter(f);
455 void Texture::Loader::max_anisotropy(float a)
457 obj.set_max_anisotropy(a);
460 void Texture::Loader::min_filter(TextureFilter f)
462 obj.set_min_filter(f);
465 void Texture::Loader::mipmap_levels(unsigned l)
467 obj.set_mipmap_levels(l);
470 void Texture::Loader::wrap(TextureWrap w)
475 void Texture::Loader::wrap_r(TextureWrap w)
480 void Texture::Loader::wrap_s(TextureWrap w)
485 void Texture::Loader::wrap_t(TextureWrap w)
491 bool is_mipmapped(TextureFilter filter)
493 return (filter==NEAREST_MIPMAP_NEAREST || filter==NEAREST_MIPMAP_LINEAR ||
494 filter==LINEAR_MIPMAP_NEAREST || filter==LINEAR_MIPMAP_LINEAR);