X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Ftexture2d_backend.cpp;h=a4e3cad64c737d78a840b15930542e7cf7e6838f;hb=HEAD;hp=9efc4351e65b47e8c6a08dda88d5cb3d344e4565;hpb=710363bade528b5015a7c472db3aa90eb08207ab;p=libs%2Fgl.git

diff --git a/source/backends/opengl/texture2d_backend.cpp b/source/backends/opengl/texture2d_backend.cpp
index 9efc4351..a4e3cad6 100644
--- a/source/backends/opengl/texture2d_backend.cpp
+++ b/source/backends/opengl/texture2d_backend.cpp
@@ -1,45 +1,23 @@
 #include <msp/gl/extensions/arb_direct_state_access.h>
 #include <msp/gl/extensions/arb_texture_storage.h>
 #include <msp/gl/extensions/arb_vertex_buffer_object.h>
-#include <msp/graphics/imageloader.h>
 #include "buffer.h"
 #include "gl.h"
 #include "texture2d.h"
 #include "texture2d_backend.h"
 
+using namespace std;
+
 namespace Msp {
 namespace GL {
 
-class OpenGLTexture2D::AsyncLoader: public Resource::AsyncLoader
-{
-private:
-	Texture2D &texture;
-	IO::Seekable &io;
-	Buffer pixel_buffer;
-	char *mapped_address = 0;
-	Graphics::Image image;
-	Graphics::ImageLoader *img_loader = 0;
-	unsigned n_bytes = 0;
-	int phase = 0;
-
-public:
-	AsyncLoader(Texture2D &, IO::Seekable &);
-	~AsyncLoader();
-
-	virtual bool needs_sync() const;
-	virtual bool process();
-};
-
-
 OpenGLTexture2D::OpenGLTexture2D():
 	Texture(GL_TEXTURE_2D)
 { }
 
 void OpenGLTexture2D::allocate()
 {
-	unsigned width = static_cast<const Texture2D *>(this)->width;
-	unsigned height = static_cast<const Texture2D *>(this)->height;
-	unsigned levels = static_cast<const Texture2D *>(this)->levels;
+	const Texture2D &self = *static_cast<const Texture2D *>(this);
 
 	if(!id)
 		create();
@@ -48,22 +26,22 @@ void OpenGLTexture2D::allocate()
 	if(ARB_texture_storage)
 	{
 		if(ARB_direct_state_access)
-			glTextureStorage2D(id, levels, gl_fmt, width, height);
+			glTextureStorage2D(id, n_levels, gl_fmt, self.width, self.height);
 		else
 		{
 			bind_scratch();
-			glTexStorage2D(target, levels, gl_fmt, width, height);
+			glTexStorage2D(target, n_levels, gl_fmt, self.width, self.height);
 		}
 	}
 	else
 	{
 		bind_scratch();
-		glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
+		glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, n_levels-1);
 		GLenum comp = get_gl_components(get_components(storage_fmt));
 		GLenum type = get_gl_type(get_component_type(storage_fmt));
-		for(unsigned i=0; i<levels; ++i)
+		for(unsigned i=0; i<n_levels; ++i)
 		{
-			auto lv_size = static_cast<const Texture2D *>(this)->get_level_size(i);
+			auto lv_size = self.get_level_size(i);
 			glTexImage2D(target, i, gl_fmt, lv_size.x, lv_size.y, 0, comp, type, 0);
 		}
 	}
@@ -84,16 +62,18 @@ void OpenGLTexture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsig
 	}
 }
 
-void OpenGLTexture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, const Buffer &buffer, unsigned offset)
+uint64_t OpenGLTexture2D::get_data_size() const
 {
-	glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer.id);
-	sub_image(level, x, y, wd, ht, reinterpret_cast<void *>(offset));
-	glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
-}
+	if(!id)
+		return 0;
 
-Resource::AsyncLoader *OpenGLTexture2D::create_async_loader(IO::Seekable &io)
-{
-	return new AsyncLoader(static_cast<Texture2D &>(*this), io);
+	const Texture2D &self = *static_cast<const Texture2D *>(this);
+
+	size_t level_size = self.width*self.height*get_pixel_size(format);
+	size_t total_size = level_size;
+	for(unsigned i=0; i<n_levels; ++i, level_size>>=2)
+		total_size += level_size;
+	return total_size;
 }
 
 void OpenGLTexture2D::unload()
@@ -103,61 +83,44 @@ void OpenGLTexture2D::unload()
 }
 
 
-OpenGLTexture2D::AsyncLoader::AsyncLoader(Texture2D &t, IO::Seekable &i):
-	texture(t),
-	io(i),
-	img_loader(Graphics::ImageLoader::open_io(io))
-{ }
+OpenGLTexture2D::AsyncTransfer::AsyncTransfer(AsyncTransfer &&other):
+	pixel_buffer(other.pixel_buffer)
+{
+	other.pixel_buffer = 0;
+}
 
-OpenGLTexture2D::AsyncLoader::~AsyncLoader()
+OpenGLTexture2D::AsyncTransfer &OpenGLTexture2D::AsyncTransfer::operator=(AsyncTransfer &&other)
 {
-	if(mapped_address)
-		pixel_buffer.unmap();
-	delete img_loader;
+	delete pixel_buffer;
+	pixel_buffer = other.pixel_buffer;
+	other.pixel_buffer = 0;
+
+	return *this;
 }
 
-bool OpenGLTexture2D::AsyncLoader::needs_sync() const
+OpenGLTexture2D::AsyncTransfer::~AsyncTransfer()
 {
-	return phase%2;
+	delete pixel_buffer;
 }
 
-bool OpenGLTexture2D::AsyncLoader::process()
+void *OpenGLTexture2D::AsyncTransfer::allocate()
 {
-	if(phase==0)
-	{
-		image.load_headers(*img_loader);
-		n_bytes = image.get_stride()*image.get_height();
-	}
-	else if(phase==1)
-	{
-		pixel_buffer.storage(n_bytes);
-		mapped_address = reinterpret_cast<char *>(pixel_buffer.map());
-	}
-	else if(phase==2)
-		image.load_into(*img_loader, mapped_address);
-	else if(phase==3)
-	{
-		mapped_address = 0;
-		if(!pixel_buffer.unmap())
-		{
-			phase = 1;
-			return false;
-		}
+	const Texture2D::AsyncTransfer &self = *static_cast<const Texture2D::AsyncTransfer *>(this);
 
-		if(!texture.id)
-			texture.create();
+	pixel_buffer = new Buffer;
+	pixel_buffer->storage(self.data_size, STREAMING);
+	return pixel_buffer->map();
+}
 
-		unsigned w = image.get_width();
-		unsigned h = image.get_height();
-		texture.storage(pixelformat_from_image(image, texture.use_srgb_format), w, h);
-		texture.OpenGLTexture2D::sub_image(0, 0, 0, w, h, pixel_buffer, 0);
+void OpenGLTexture2D::AsyncTransfer::finalize()
+{
+	const Texture2D::AsyncTransfer &self = *static_cast<const Texture2D::AsyncTransfer *>(this);
 
-		if(texture.auto_gen_mipmap)
-			texture.generate_mipmap();
-	}
+	pixel_buffer->unmap();
 
-	++phase;
-	return phase>3;
+	glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pixel_buffer->id);
+	self.texture->OpenGLTexture2D::sub_image(self.level, self.x, self.y, self.width, self.height, 0);
+	glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
 }
 
 } // namespace GL