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/io/memory.h>
8 #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),
71 auto_gen_mipmap(false),
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 FormatSwizzle swiz = NO_SWIZZLE;
101 if(ARB_texture_rg && ARB_texture_swizzle)
106 swiz = R_TO_LUMINANCE;
108 else if(fmt==LUMINANCE_ALPHA)
111 swiz = RG_TO_LUMINANCE_ALPHA;
115 if(!get_component_size(fmt) && OES_required_internalformat)
116 fmt = get_default_sized_pixelformat(fmt);
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);
160 set_parameter_i(GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
161 if(mask&COMPARE_FUNC)
162 set_parameter_i(GL_TEXTURE_COMPARE_FUNC, cmp_func);
163 if(mask&FORMAT_SWIZZLE)
165 if(get_gl_api()==OPENGL_ES2)
167 set_parameter_i(GL_TEXTURE_SWIZZLE_R, swizzle_orders[swizzle*4]);
168 set_parameter_i(GL_TEXTURE_SWIZZLE_G, swizzle_orders[swizzle*4+1]);
169 set_parameter_i(GL_TEXTURE_SWIZZLE_B, swizzle_orders[swizzle*4+2]);
170 set_parameter_i(GL_TEXTURE_SWIZZLE_A, swizzle_orders[swizzle*4+3]);
174 if(ARB_direct_state_access)
175 glTextureParameteriv(id, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
177 glTexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
180 if(mask&MIPMAP_LEVELS)
181 set_parameter_i(GL_TEXTURE_MAX_LEVEL, (mipmap_levels ? mipmap_levels-1 : 1000));
184 void Texture::set_parameter_i(GLenum param, int value) const
186 if(ARB_direct_state_access)
187 glTextureParameteri(id, param, value);
189 glTexParameteri(target, param, value);
192 void Texture::set_parameter_f(GLenum param, float value) const
194 if(ARB_direct_state_access)
195 glTextureParameterf(id, param, value);
197 glTexParameterf(target, param, value);
200 void Texture::set_min_filter(TextureFilter f)
203 update_parameter(MIN_FILTER);
206 void Texture::set_mag_filter(TextureFilter f)
209 update_parameter(MAG_FILTER);
212 void Texture::set_filter(TextureFilter f)
215 set_mag_filter(f==NEAREST ? NEAREST : LINEAR);
218 void Texture::set_mipmap_levels(unsigned l)
221 update_parameter(MIPMAP_LEVELS);
224 void Texture::set_max_anisotropy(float a)
227 throw invalid_argument("Texture::set_max_anisotropy");
229 static Require _req(EXT_texture_filter_anisotropic);
231 if(EXT_texture_filter_anisotropic)
232 update_parameter(MAX_ANISOTROPY);
235 void Texture::set_wrap(TextureWrap w)
243 void Texture::set_wrap_s(TextureWrap w)
246 update_parameter(WRAP_S);
249 void Texture::set_wrap_t(TextureWrap w)
252 update_parameter(WRAP_T);
255 void Texture::set_wrap_r(TextureWrap w)
257 static Require _req(EXT_texture3D);
259 update_parameter(WRAP_R);
262 bool Texture::can_generate_mipmap()
264 return EXT_framebuffer_object;
267 void Texture::generate_mipmap()
269 // glGenerateMipmap is defined here
270 static Require _req(EXT_framebuffer_object);
272 if(ARB_direct_state_access)
273 glGenerateTextureMipmap(id);
276 BindRestore _bind(this);
277 glGenerateMipmap(target);
281 void Texture::set_auto_generate_mipmap(bool gm)
284 static Require _req(EXT_framebuffer_object);
286 auto_gen_mipmap = gm;
289 void Texture::set_compare_enabled(bool c)
292 static Require _req(ARB_shadow);
294 update_parameter(COMPARE);
297 void Texture::set_compare_func(Predicate f)
299 static Require _req(ARB_shadow);
301 update_parameter(COMPARE_FUNC);
304 void Texture::load_image(const string &fn, bool srgb)
312 void Texture::bind_to(unsigned i) const
317 manager->resource_used(*this);
325 TexUnit &unit = TexUnit::get_unit(i);
326 if(unit.set_texture(this))
329 manager->resource_used(*this);
331 if(ARB_direct_state_access)
332 glBindTextureUnit(i, id);
336 glBindTexture(target, id);
341 update_parameter(dirty_params);
347 const Texture *Texture::current(unsigned i)
349 return TexUnit::get_unit(i).get_texture();
352 void Texture::unbind_from(unsigned i)
354 TexUnit &unit = TexUnit::get_unit(i);
355 const Texture *cur = unit.get_texture();
356 if(unit.set_texture(0))
358 if(ARB_direct_state_access)
359 glBindTextureUnit(i, 0);
363 glBindTexture(cur->target, 0);
369 Texture::Loader::Loader(Texture &t):
370 DataFile::CollectionObjectLoader<Texture>(t, 0)
375 Texture::Loader::Loader(Texture &t, Collection &c):
376 DataFile::CollectionObjectLoader<Texture>(t, &c)
381 void Texture::Loader::init()
383 if(Resources *res = dynamic_cast<Resources *>(coll))
384 srgb = res->get_srgb_conversion();
388 add("external_image", &Loader::external_image);
389 add("filter", &Loader::filter);
390 add("generate_mipmap", &Loader::generate_mipmap);
391 add("image_data", &Loader::image_data);
392 add("mag_filter", &Loader::mag_filter);
393 add("max_anisotropy", &Loader::max_anisotropy);
394 add("min_filter", &Loader::min_filter);
395 add("mipmap_levels", &Loader::mipmap_levels);
396 add("wrap", &Loader::wrap);
397 add("wrap_r", &Loader::wrap_r);
398 add("wrap_s", &Loader::wrap_s);
399 add("wrap_t", &Loader::wrap_t);
402 void Texture::Loader::external_image(const string &fn)
405 RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
407 throw IO::file_not_found(fn);
410 obj.image(img, srgb);
413 void Texture::Loader::filter(TextureFilter f)
418 void Texture::Loader::generate_mipmap(bool gm)
420 obj.set_auto_generate_mipmap(gm);
423 void Texture::Loader::image_data(const string &data)
426 IO::Memory mem(data.data(), data.size());
429 obj.image(img, srgb);
432 void Texture::Loader::mag_filter(TextureFilter f)
434 obj.set_mag_filter(f);
437 void Texture::Loader::max_anisotropy(float a)
439 obj.set_max_anisotropy(a);
442 void Texture::Loader::min_filter(TextureFilter f)
444 obj.set_min_filter(f);
447 void Texture::Loader::mipmap_levels(unsigned l)
449 obj.set_mipmap_levels(l);
452 void Texture::Loader::wrap(TextureWrap w)
457 void Texture::Loader::wrap_r(TextureWrap w)
462 void Texture::Loader::wrap_s(TextureWrap w)
467 void Texture::Loader::wrap_t(TextureWrap w)
473 bool is_mipmapped(TextureFilter filter)
475 return (filter==NEAREST_MIPMAP_NEAREST || filter==NEAREST_MIPMAP_LINEAR ||
476 filter==LINEAR_MIPMAP_NEAREST || filter==LINEAR_MIPMAP_LINEAR);