+++ /dev/null
-#include <msp/gl/extensions/arb_direct_state_access.h>
-#include <msp/gl/extensions/arb_shadow.h>
-#include <msp/gl/extensions/arb_texture_swizzle.h>
-#include <msp/gl/extensions/ext_framebuffer_object.h>
-#include <msp/gl/extensions/ext_texture3d.h>
-#include <msp/gl/extensions/ext_texture_filter_anisotropic.h>
-#include <msp/gl/extensions/sgis_generate_mipmap.h>
-#include <msp/io/memory.h>
-#include <msp/strings/format.h>
-#include "error.h"
-#include "resourcemanager.h"
-#include "resources.h"
-#include "texture.h"
-#include "texunit.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-void operator>>(const LexicalConverter &c, TextureFilter &tf)
-{
- if(c.get()=="NEAREST")
- tf = NEAREST;
- else if(c.get()=="LINEAR")
- tf = LINEAR;
- else if(c.get()=="NEAREST_MIPMAP_NEAREST")
- tf = NEAREST_MIPMAP_NEAREST;
- else if(c.get()=="NEAREST_MIPMAP_LINEAR")
- tf = NEAREST_MIPMAP_LINEAR;
- else if(c.get()=="LINEAR_MIPMAP_NEAREST")
- tf = LINEAR_MIPMAP_NEAREST;
- else if(c.get()=="LINEAR_MIPMAP_LINEAR")
- tf = LINEAR_MIPMAP_LINEAR;
- else
- throw lexical_error(format("conversion of '%s' to TextureFilter", c.get()));
-}
-
-
-void operator>>(const LexicalConverter &c, TextureWrap &tw)
-{
- if(c.get()=="REPEAT")
- tw = REPEAT;
- else if(c.get()=="CLAMP_TO_EDGE")
- tw = CLAMP_TO_EDGE;
- else if(c.get()=="MIRRORED_REPEAT")
- tw = MIRRORED_REPEAT;
- else
- throw lexical_error(format("conversion of '%s' to TextureWrap", c.get()));
-}
-
-
-int Texture::swizzle_orders[] =
-{
- GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA,
- GL_RED, GL_RED, GL_RED, GL_ONE,
- GL_RED, GL_RED, GL_RED, GL_GREEN
-};
-
-Texture::Texture(GLenum t, ResourceManager *m):
- id(0),
- target(t),
- ifmt(RGB),
- min_filter(NEAREST_MIPMAP_LINEAR),
- mag_filter(LINEAR),
- mipmap_levels(0),
- max_anisotropy(1.0f),
- wrap_s(REPEAT),
- wrap_t(REPEAT),
- wrap_r(REPEAT),
- gen_mipmap(false),
- compare(false),
- cmp_func(LEQUAL),
- dirty_params(0)
-{
- if(m)
- set_manager(m);
- else if(ARB_direct_state_access)
- glCreateTextures(target, 1, &id);
- else
- glGenTextures(1, &id);
-}
-
-Texture::~Texture()
-{
- while(TexUnit *unit = TexUnit::find_unit(this))
- unbind_from(unit->get_index());
-
- if(id)
- glDeleteTextures(1, &id);
-}
-
-DataType Texture::get_alloc_type(PixelFormat fmt)
-{
- return (get_base_pixelformat(fmt)==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
-}
-
-void Texture::set_internal_format(PixelFormat fmt)
-{
- if(!get_component_size(fmt) && OES_required_internalformat)
- fmt = get_default_sized_pixelformat(fmt);
-
- FormatSwizzle swiz = NO_SWIZZLE;
- if(ARB_texture_rg && ARB_texture_swizzle)
- {
- if(fmt==LUMINANCE8 || fmt==SLUMINANCE8)
- {
- fmt = R8;
- swiz = R_TO_LUMINANCE;
- }
- else if(fmt==LUMINANCE8_ALPHA8 || fmt==SLUMINANCE8_ALPHA8)
- {
- fmt = RG8;
- swiz = RG_TO_LUMINANCE_ALPHA;
- }
- }
-
- require_pixelformat(fmt);
- ifmt = fmt;
- swizzle = swiz;
- if(swizzle)
- update_parameter(FORMAT_SWIZZLE);
-}
-
-PixelFormat Texture::get_upload_format(PixelFormat fmt) const
-{
- if(fmt==LUMINANCE || fmt==LUMINANCE_ALPHA)
- return get_base_pixelformat(ifmt);
- else
- return fmt;
-}
-
-void Texture::update_parameter(int mask) const
-{
- if(!ARB_direct_state_access && TexUnit::current().get_texture()!=this)
- {
- TexUnit *unit = TexUnit::find_unit(this);
- if(!unit)
- {
- dirty_params |= mask;
- return;
- }
-
- unit->bind();
- }
-
- if(mask&MIN_FILTER)
- set_parameter_i(GL_TEXTURE_MIN_FILTER, min_filter);
- if(mask&MAG_FILTER)
- set_parameter_i(GL_TEXTURE_MAG_FILTER, mag_filter);
- if(mask&MAX_ANISOTROPY)
- set_parameter_f(GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
- if(mask&WRAP_S)
- set_parameter_i(GL_TEXTURE_WRAP_S, wrap_s);
- if(mask&WRAP_T)
- set_parameter_i(GL_TEXTURE_WRAP_T, wrap_t);
- if(mask&WRAP_R)
- set_parameter_i(GL_TEXTURE_WRAP_R, wrap_r);
- if(mask&GENERATE_MIPMAP)
- set_parameter_i(GL_GENERATE_MIPMAP, gen_mipmap);
- if(mask&COMPARE)
- set_parameter_i(GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
- if(mask&COMPARE_FUNC)
- set_parameter_i(GL_TEXTURE_COMPARE_FUNC, cmp_func);
- if(mask&FORMAT_SWIZZLE)
- {
- if(get_gl_api()==OPENGL_ES2)
- {
- set_parameter_i(GL_TEXTURE_SWIZZLE_R, swizzle_orders[swizzle*4]);
- set_parameter_i(GL_TEXTURE_SWIZZLE_G, swizzle_orders[swizzle*4+1]);
- set_parameter_i(GL_TEXTURE_SWIZZLE_B, swizzle_orders[swizzle*4+2]);
- set_parameter_i(GL_TEXTURE_SWIZZLE_A, swizzle_orders[swizzle*4+3]);
- }
- else
- {
- if(ARB_direct_state_access)
- glTextureParameteriv(id, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
- else
- glTexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
- }
- }
- if(mask&MIPMAP_LEVELS)
- set_parameter_i(GL_TEXTURE_MAX_LEVEL, (mipmap_levels ? mipmap_levels-1 : 1000));
-}
-
-void Texture::set_parameter_i(GLenum param, int value) const
-{
- if(ARB_direct_state_access)
- glTextureParameteri(id, param, value);
- else
- glTexParameteri(target, param, value);
-}
-
-void Texture::set_parameter_f(GLenum param, float value) const
-{
- if(ARB_direct_state_access)
- glTextureParameterf(id, param, value);
- else
- glTexParameterf(target, param, value);
-}
-
-void Texture::set_min_filter(TextureFilter f)
-{
- min_filter = f;
- update_parameter(MIN_FILTER);
-}
-
-void Texture::set_mag_filter(TextureFilter f)
-{
- mag_filter = f;
- update_parameter(MAG_FILTER);
-}
-
-void Texture::set_filter(TextureFilter f)
-{
- set_min_filter(f);
- set_mag_filter(f==NEAREST ? NEAREST : LINEAR);
-}
-
-void Texture::set_mipmap_levels(unsigned l)
-{
- mipmap_levels = l;
- update_parameter(MIPMAP_LEVELS);
-}
-
-void Texture::set_max_anisotropy(float a)
-{
- if(a<1.0f)
- throw invalid_argument("Texture::set_max_anisotropy");
- else if(a>1.0f)
- static Require _req(EXT_texture_filter_anisotropic);
- max_anisotropy = a;
- if(EXT_texture_filter_anisotropic)
- update_parameter(MAX_ANISOTROPY);
-}
-
-void Texture::set_wrap(TextureWrap w)
-{
- set_wrap_s(w);
- set_wrap_t(w);
- if(EXT_texture3D)
- set_wrap_r(w);
-}
-
-void Texture::set_wrap_s(TextureWrap w)
-{
- wrap_s = w;
- update_parameter(WRAP_S);
-}
-
-void Texture::set_wrap_t(TextureWrap w)
-{
- wrap_t = w;
- update_parameter(WRAP_T);
-}
-
-void Texture::set_wrap_r(TextureWrap w)
-{
- static Require _req(EXT_texture3D);
- wrap_r = w;
- update_parameter(WRAP_R);
-}
-
-bool Texture::can_generate_mipmap()
-{
- return (EXT_framebuffer_object || SGIS_generate_mipmap);
-}
-
-void Texture::set_generate_mipmap(bool gm)
-{
- if(gm && !EXT_framebuffer_object)
- static Require _req(SGIS_generate_mipmap);
- gen_mipmap = gm;
- if(!EXT_framebuffer_object)
- update_parameter(GENERATE_MIPMAP);
-}
-
-void Texture::auto_generate_mipmap()
-{
- // glGenerateMipmap is defined here
- if(EXT_framebuffer_object)
- {
- if(ARB_direct_state_access)
- glGenerateTextureMipmap(id);
- else
- glGenerateMipmap(target);
- }
-}
-
-void Texture::set_compare_enabled(bool c)
-{
- if(c)
- static Require _req(ARB_shadow);
- compare = c;
- update_parameter(COMPARE);
-}
-
-void Texture::set_compare_func(Predicate f)
-{
- static Require _req(ARB_shadow);
- cmp_func = f;
- update_parameter(COMPARE_FUNC);
-}
-
-void Texture::load_image(const string &fn, bool srgb)
-{
- Graphics::Image img;
- img.load_file(fn);
-
- image(img, srgb);
-}
-
-void Texture::bind_to(unsigned i, bool legacy) const
-{
- if(!id)
- {
- if(manager)
- manager->resource_used(*this);
- if(!id)
- {
- unbind_from(i);
- return;
- }
- }
-
- legacy = (legacy && is_legacy_target(target));
-
- TexUnit &unit = TexUnit::get_unit(i);
- const Texture *old = unit.get_texture();
- bool old_legacy = unit.get_texture_legacy();
- if(unit.set_texture(this, legacy))
- {
- if(manager)
- manager->resource_used(*this);
-
- if(ARB_direct_state_access && !old_legacy && (!unit.supports_legacy() || !legacy))
- glBindTextureUnit(i, id);
- else
- {
- unit.bind();
- if(unit.supports_legacy())
- {
- if(old && old->target!=target && old_legacy)
- glDisable(old->target);
- if((!old || old->target!=target) && legacy)
- glEnable(target);
- }
- glBindTexture(target, id);
- }
-
- if(dirty_params)
- {
- update_parameter(dirty_params);
- dirty_params = 0;
- }
- }
-}
-
-const Texture *Texture::current(unsigned i)
-{
- return TexUnit::get_unit(i).get_texture();
-}
-
-void Texture::unbind_from(unsigned i)
-{
- TexUnit &unit = TexUnit::get_unit(i);
- const Texture *cur = unit.get_texture();
- bool legacy = unit.get_texture_legacy();
- if(unit.set_texture(0))
- {
- if(ARB_direct_state_access && !legacy)
- glBindTextureUnit(i, 0);
- else
- {
- unit.bind();
- glBindTexture(cur->target, 0);
- if(unit.supports_legacy() && legacy)
- glDisable(cur->target);
- }
- }
-}
-
-bool Texture::is_legacy_target(GLenum target)
-{
- return target<GL_TEXTURE_1D_ARRAY;
-}
-
-
-Texture::Loader::Loader(Texture &t):
- DataFile::CollectionObjectLoader<Texture>(t, 0)
-{
- init();
-}
-
-Texture::Loader::Loader(Texture &t, Collection &c):
- DataFile::CollectionObjectLoader<Texture>(t, &c)
-{
- init();
-}
-
-void Texture::Loader::init()
-{
- if(Resources *res = dynamic_cast<Resources *>(coll))
- srgb = res->get_srgb_conversion();
- else
- srgb = false;
-
- add("external_image", &Loader::external_image);
- add("filter", &Loader::filter);
- add("generate_mipmap", &Loader::generate_mipmap);
- add("image_data", &Loader::image_data);
- add("mag_filter", &Loader::mag_filter);
- add("max_anisotropy", &Loader::max_anisotropy);
- add("min_filter", &Loader::min_filter);
- add("mipmap_levels", &Loader::mipmap_levels);
- add("wrap", &Loader::wrap);
- add("wrap_r", &Loader::wrap_r);
- add("wrap_s", &Loader::wrap_s);
- add("wrap_t", &Loader::wrap_t);
-}
-
-void Texture::Loader::external_image(const string &fn)
-{
- Graphics::Image img;
- RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
- img.load_io(*io);
-
- obj.image(img, srgb);
-}
-
-void Texture::Loader::filter(TextureFilter f)
-{
- obj.set_filter(f);
-}
-
-void Texture::Loader::generate_mipmap(bool gm)
-{
- obj.set_generate_mipmap(gm);
-}
-
-void Texture::Loader::image_data(const string &data)
-{
- Graphics::Image img;
- IO::Memory mem(data.data(), data.size());
- img.load_io(mem);
-
- obj.image(img, srgb);
-}
-
-void Texture::Loader::mag_filter(TextureFilter f)
-{
- obj.set_mag_filter(f);
-}
-
-void Texture::Loader::max_anisotropy(float a)
-{
- obj.set_max_anisotropy(a);
-}
-
-void Texture::Loader::min_filter(TextureFilter f)
-{
- obj.set_min_filter(f);
-}
-
-void Texture::Loader::mipmap_levels(unsigned l)
-{
- obj.set_mipmap_levels(l);
-}
-
-void Texture::Loader::wrap(TextureWrap w)
-{
- obj.set_wrap(w);
-}
-
-void Texture::Loader::wrap_r(TextureWrap w)
-{
- obj.set_wrap_r(w);
-}
-
-void Texture::Loader::wrap_s(TextureWrap w)
-{
- obj.set_wrap_s(w);
-}
-
-void Texture::Loader::wrap_t(TextureWrap w)
-{
- obj.set_wrap_t(w);
-}
-
-
-bool is_mipmapped(TextureFilter filter)
-{
- return (filter==NEAREST_MIPMAP_NEAREST || filter==NEAREST_MIPMAP_LINEAR ||
- filter==LINEAR_MIPMAP_NEAREST || filter==LINEAR_MIPMAP_LINEAR);
-}
-
-} // namespace GL
-} // namespace Msp
projects / libs / gl.git / blobdiff