+#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 Texture::bind() const
+void operator>>(const LexicalConverter &c, TextureFilter &tf)
{
- if(!target) return;
+ 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()));
+}
- glEnable(target);
- glBindTexture(target, id);
- bound=this;
+
+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()));
}
-void Texture::parameter(GLenum param, int value)
+
+int Texture::swizzle_orders[] =
{
- if(bound!=this) bind();
+ GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA,
+ GL_RED, GL_RED, GL_RED, GL_ONE,
+ GL_RED, GL_RED, GL_RED, GL_GREEN
+};
- glTexParameteri(target, param, value);
+Texture::Texture(GLenum t, ResourceManager *m):
+ id(0),
+ target(t),
+ ifmt(RGB),
+ min_filter(NEAREST_MIPMAP_LINEAR),
+ mag_filter(LINEAR),
+ 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);
}
-void Texture::parameter(GLenum param, float value)
+Texture::~Texture()
{
- if(bound!=this) bind();
+ while(TexUnit *unit = TexUnit::find_unit(this))
+ unbind_from(unit->get_index());
- glTexParameterf(target, param, value);
+ if(id)
+ glDeleteTextures(1, &id);
}
-sizei Texture::get_width(int level) const
+DataType Texture::get_alloc_type(PixelFormat fmt)
{
- if(bound!=this) bind();
+ return (get_base_pixelformat(fmt)==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
+}
- int width;
- glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width);
- return width;
+void Texture::set_internal_format(PixelFormat fmt)
+{
+ if(!get_component_size(fmt) && MSP_sized_internal_formats)
+ {
+ unsigned size = (fmt==DEPTH_COMPONENT ? get_gl_api()==OPENGL_ES2 ? 2 : 4 : 1);
+ fmt = get_sized_pixelformat(fmt, size);
+ }
+
+ 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);
}
-sizei Texture::get_height(int level) const
+PixelFormat Texture::get_upload_format(PixelFormat fmt) const
{
- if(bound!=this) bind();
+ 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();
+ }
- int height;
- glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height);
- return height;
+ 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(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);
+ }
}
-sizei Texture::get_depth(int level) const
+void Texture::set_parameter_i(GLenum param, int value) const
{
- if(bound!=this) bind();
+ if(ARB_direct_state_access)
+ glTextureParameteri(id, param, value);
+ else
+ glTexParameteri(target, param, value);
+}
- int depth;
- glGetTexLevelParameteriv(target, level, GL_TEXTURE_DEPTH, &depth);
- return depth;
+void Texture::set_parameter_f(GLenum param, float value) const
+{
+ if(ARB_direct_state_access)
+ glTextureParameterf(id, param, value);
+ else
+ glTexParameterf(target, param, value);
}
-Texture::~Texture()
+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_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;
+ 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) const
+{
+ if(!id)
+ {
+ if(manager)
+ manager->resource_used(*this);
+ if(!id)
+ {
+ unbind_from(i);
+ return;
+ }
+ }
+
+ TexUnit &unit = TexUnit::get_unit(i);
+ const Texture *old = unit.get_texture();
+ if(unit.set_texture(this))
+ {
+ if(manager)
+ manager->resource_used(*this);
+
+ unit.bind();
+ if(unit.supports_legacy())
+ {
+ if(old && old->target!=target)
+ glDisable(old->target);
+ if(!old || old->target!=target)
+ 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();
+ if(unit.set_texture(0))
+ {
+ unit.bind();
+ glBindTexture(cur->target, 0);
+ if(unit.supports_legacy())
+ glDisable(cur->target);
+ }
+}
+
+
+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("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)
{
- glDeleteTextures(1, &id);
+ 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);
}
-Texture::Texture():
- target(0)
+void Texture::Loader::mag_filter(TextureFilter f)
{
- glGenTextures(1, &id);
+ obj.set_mag_filter(f);
}
-const Texture *Texture::bound=0;
+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::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