X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftexture.cpp;h=b528ca30f5b6ccaee0ac81c0e78e86226f345a1a;hb=e01371d38e290b4c526146fd5d1388bba8201233;hp=c2ea8ff7b854c95cf6bee17e5bfd43aed772f710;hpb=f14435e58bfa0fa697a06ba9a454bb30cd37d9d8;p=libs%2Fgl.git

diff --git a/source/texture.cpp b/source/texture.cpp
index c2ea8ff7..b528ca30 100644
--- a/source/texture.cpp
+++ b/source/texture.cpp
@@ -1,4 +1,13 @@
-#include "except.h"
+#include <msp/gl/extensions/arb_shadow.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"
 
@@ -7,27 +16,22 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-istream &operator>>(istream &in, TextureFilter &tf)
+void operator>>(const LexicalConverter &c, TextureFilter &tf)
 {
-	string str;
-	in>>str;
-
-	if(str=="NEAREST")
+	if(c.get()=="NEAREST")
 		tf = NEAREST;
-	else if(str=="LINEAR")
+	else if(c.get()=="LINEAR")
 		tf = LINEAR;
-	else if(str=="NEAREST_MIPMAP_NEAREST")
+	else if(c.get()=="NEAREST_MIPMAP_NEAREST")
 		tf = NEAREST_MIPMAP_NEAREST;
-	else if(str=="NEAREST_MIPMAP_LINEAR")
+	else if(c.get()=="NEAREST_MIPMAP_LINEAR")
 		tf = NEAREST_MIPMAP_LINEAR;
-	else if(str=="LINEAR_MIPMAP_NEAREST")
+	else if(c.get()=="LINEAR_MIPMAP_NEAREST")
 		tf = LINEAR_MIPMAP_NEAREST;
-	else if(str=="LINEAR_MIPMAP_LINEAR")
+	else if(c.get()=="LINEAR_MIPMAP_LINEAR")
 		tf = LINEAR_MIPMAP_LINEAR;
 	else
-		in.setstate(ios_base::failbit);
-
-	return in;
+		throw lexical_error(format("conversion of '%s' to TextureFilter", c.get()));
 }
 
 
@@ -40,11 +44,12 @@ void operator>>(const LexicalConverter &c, TextureWrap &tw)
 	else if(c.get()=="MIRRORED_REPEAT")
 		tw = MIRRORED_REPEAT;
 	else
-		throw LexicalError("Invalid input in TextureWrap conversion");
+		throw lexical_error(format("conversion of '%s' to TextureWrap", c.get()));
 }
 
 
-Texture::Texture(GLenum t):
+Texture::Texture(GLenum t, ResourceManager *m):
+	id(0),
 	target(t),
 	min_filter(NEAREST_MIPMAP_LINEAR),
 	mag_filter(LINEAR),
@@ -56,37 +61,58 @@ Texture::Texture(GLenum t):
 	cmp_func(LEQUAL),
 	dirty_params(0)
 {
-	glGenTextures(1, &id);
+	if(m)
+		set_manager(m);
+	else
+		glGenTextures(1, &id);
 }
 
 Texture::~Texture()
 {
-	glDeleteTextures(1, &id);
+	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::update_parameter(int mask) const
 {
-	if(current()==this)
+	if(TexUnit::current().get_texture()!=this)
 	{
-		if(mask&MIN_FILTER)
-			glTexParameteri(target, GL_TEXTURE_MIN_FILTER, min_filter);
-		if(mask&MAG_FILTER)
-			glTexParameteri(target, GL_TEXTURE_MAG_FILTER, mag_filter);
-		if(mask&WRAP_S)
-			glTexParameteri(target, GL_TEXTURE_WRAP_S, wrap_s);
-		if(mask&WRAP_T)
-			glTexParameteri(target, GL_TEXTURE_WRAP_T, wrap_t);
-		if(mask&WRAP_R)
-			glTexParameteri(target, GL_TEXTURE_WRAP_R, wrap_r);
-		if(mask&GENERATE_MIPMAP)
-			glTexParameteri(target, GL_GENERATE_MIPMAP_SGIS, gen_mipmap);
-		if(mask&COMPARE)
-			glTexParameteri(target, GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
-		if(mask&COMPARE_FUNC)
-			glTexParameteri(target, GL_TEXTURE_COMPARE_FUNC, cmp_func);
+		TexUnit *unit = TexUnit::find_unit(this);
+		if(!unit)
+		{
+			dirty_params |= mask;
+			return;
+		}
+
+		unit->bind();
 	}
-	else
-		dirty_params |= mask;
+
+	if(mask&MIN_FILTER)
+		glTexParameteri(target, GL_TEXTURE_MIN_FILTER, min_filter);
+	if(mask&MAG_FILTER)
+		glTexParameteri(target, GL_TEXTURE_MAG_FILTER, mag_filter);
+	if(mask&MAX_ANISOTROPY)
+		glTexParameteri(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
+	if(mask&WRAP_S)
+		glTexParameteri(target, GL_TEXTURE_WRAP_S, wrap_s);
+	if(mask&WRAP_T)
+		glTexParameteri(target, GL_TEXTURE_WRAP_T, wrap_t);
+	if(mask&WRAP_R)
+		glTexParameteri(target, GL_TEXTURE_WRAP_R, wrap_r);
+	if(mask&GENERATE_MIPMAP)
+		glTexParameteri(target, GL_GENERATE_MIPMAP, gen_mipmap);
+	if(mask&COMPARE)
+		glTexParameteri(target, GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
+	if(mask&COMPARE_FUNC)
+		glTexParameteri(target, GL_TEXTURE_COMPARE_FUNC, cmp_func);
 }
 
 void Texture::set_min_filter(TextureFilter f)
@@ -101,11 +127,28 @@ void Texture::set_mag_filter(TextureFilter 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);
-	set_wrap_r(w);
+	if(EXT_texture3D)
+		set_wrap_r(w);
 }
 
 void Texture::set_wrap_s(TextureWrap w)
@@ -122,43 +165,82 @@ void Texture::set_wrap_t(TextureWrap w)
 
 void Texture::set_wrap_r(TextureWrap w)
 {
+	static Require _req(EXT_texture3D);
 	wrap_r = w;
 	update_parameter(WRAP_R);
 }
 
 void Texture::set_generate_mipmap(bool gm)
 {
+	if(gm)
+		static Require _req(SGIS_generate_mipmap);
 	gen_mipmap = gm;
-	update_parameter(GENERATE_MIPMAP);
+	if(get_gl_api()!=OPENGL_ES2)
+		update_parameter(GENERATE_MIPMAP);
+}
+
+void Texture::auto_generate_mipmap()
+{
+	if(get_gl_api()==OPENGL_ES2)
+	{
+		// glGenerateMipmap is defined here
+		static Require _req(EXT_framebuffer_object);
+		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::bind() const
+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(!target)
-		throw InvalidState("Attempt to bind a texture without target (should never happen)");
+	if(!id)
+	{
+		if(manager)
+			manager->resource_used(*this);
+		if(!id)
+		{
+			unbind_from(i);
+			return;
+		}
+	}
 
-	const Texture *cur = TexUnit::current().get_texture();
-	if(cur!=this)
+	TexUnit &unit = TexUnit::get_unit(i);
+	const Texture *old = unit.get_texture();
+	if(unit.set_texture(this))
 	{
-		if(cur && cur->target!=target)
-			glDisable(cur->target);
-		if(!cur || cur->target!=target)
-			glEnable(target);
+		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);
-		TexUnit::current().set_texture(this);
 
 		if(dirty_params)
 		{
@@ -168,40 +250,50 @@ void Texture::bind() const
 	}
 }
 
-void Texture::bind_to(unsigned i) const
+const Texture *Texture::current(unsigned i)
 {
-	TexUnit::activate(i);
-	bind();
+	return TexUnit::get_unit(i).get_texture();
 }
 
-const Texture *Texture::current()
+void Texture::unbind_from(unsigned i)
 {
-	return TexUnit::current().get_texture();
+	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);
+	}
 }
 
-void Texture::unbind()
-{
-	const Texture *cur = TexUnit::current().get_texture();
-	if(!cur)
-		return;
 
-	glBindTexture(cur->target, 0);
-	glDisable(cur->target);
-	TexUnit::current().set_texture(0);
+Texture::Loader::Loader(Texture &t):
+	DataFile::CollectionObjectLoader<Texture>(t, 0)
+{
+	init();
 }
 
-void Texture::unbind_from(unsigned i)
+Texture::Loader::Loader(Texture &t, Collection &c):
+	DataFile::CollectionObjectLoader<Texture>(t, &c)
 {
-	TexUnit::activate(i);
-	unbind();
+	init();
 }
 
-
-Texture::Loader::Loader(Texture &t):
-	DataFile::ObjectLoader<Texture>(t)
+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);
@@ -209,16 +301,44 @@ Texture::Loader::Loader(Texture &t):
 	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);
@@ -244,5 +364,12 @@ 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