#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;
- Graphics::Image image;
- Graphics::ImageLoader *img_loader;
- unsigned n_bytes;
- int phase;
-
-public:
- AsyncLoader(Texture2D &, IO::Seekable &);
- ~AsyncLoader();
-
- virtual bool needs_sync() const;
- virtual bool process();
-};
-
-
-OpenGLTexture2D::OpenGLTexture2D(ResourceManager *m):
- Texture(GL_TEXTURE_2D, m)
+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();
GLenum gl_fmt = get_gl_pixelformat(storage_fmt);
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);
}
}
}
}
-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()
}
-OpenGLTexture2D::AsyncLoader::AsyncLoader(Texture2D &t, IO::Seekable &i):
- texture(t),
- io(i),
- mapped_address(0),
- img_loader(Graphics::ImageLoader::open_io(io)),
- phase(0)
-{ }
+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.generate_id();
+ 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
projects / libs / gl.git / blobdiff