X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Ftexture1d.cpp;fp=source%2Fcore%2Ftexture1d.cpp;h=742857be725b4ed205b369c43d823f5b0812af14;hb=7aaec9a70b8d7733429bec043f8e33e02956f266;hp=0000000000000000000000000000000000000000;hpb=bec07999d95b76f4b47cffcc564d0cd0afc0435e;p=libs%2Fgl.git

diff --git a/source/core/texture1d.cpp b/source/core/texture1d.cpp
new file mode 100644
index 00000000..742857be
--- /dev/null
+++ b/source/core/texture1d.cpp
@@ -0,0 +1,190 @@
+#include <msp/core/raii.h>
+#include <msp/gl/extensions/arb_direct_state_access.h>
+#include <msp/gl/extensions/arb_texture_storage.h>
+#include <msp/gl/extensions/msp_texture1d.h>
+#include "bindable.h"
+#include "error.h"
+#include "texture1d.h"
+
+using namespace std;
+
+namespace Msp {
+namespace GL {
+
+Texture1D::Texture1D():
+	Texture(GL_TEXTURE_1D),
+	width(0),
+	allocated(0)
+{
+	static Require _req(MSP_texture1D);
+}
+
+void Texture1D::storage(PixelFormat fmt, unsigned wd, unsigned lv)
+{
+	if(width>0)
+		throw invalid_operation("Texture1D::storage");
+	if(wd==0)
+		throw invalid_argument("Texture1D::storage");
+
+	set_format(fmt);
+	width = wd;
+	levels = get_n_levels();
+	if(lv)
+		levels = min(levels, lv);
+}
+
+void Texture1D::allocate(unsigned level)
+{
+	if(width==0)
+		throw invalid_operation("Texture1D::allocate");
+	if(level>=levels)
+		throw invalid_argument("Texture1D::allocate");
+	if(allocated&(1<<level))
+		return;
+
+	if(ARB_texture_storage)
+	{
+		Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
+		if(ARB_direct_state_access)
+			glTextureStorage1D(id, levels, storage_fmt, width);
+		else
+			glTexStorage1D(target, levels, storage_fmt, width);
+		apply_swizzle();
+		allocated |= (1<<levels)-1;
+	}
+	else
+		image(level, 0);
+}
+
+void Texture1D::image(unsigned level, const void *data)
+{
+	if(width==0)
+		throw invalid_operation("Texture1D::image");
+
+	unsigned w = get_level_size(level);
+
+	if(ARB_texture_storage)
+		return sub_image(level, 0, w, data);
+
+	BindRestore _bind(this);
+
+	if(!allocated)
+	{
+		glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
+		apply_swizzle();
+	}
+
+	PixelComponents comp = get_components(storage_fmt);
+	DataType type = get_component_type(storage_fmt);
+	glTexImage1D(target, level, storage_fmt, w, 0, comp, type, data);
+
+	allocated |= 1<<level;
+	if(auto_gen_mipmap && level==0)
+	{
+		generate_mipmap();
+		allocated |= (1<<levels)-1;
+	}
+}
+
+void Texture1D::image(unsigned level, PixelComponents comp, DataType type, const void *data)
+{
+	if(comp!=get_components(format) || type!=get_component_type(format))
+		throw incompatible_data("Texture1D::image");
+	image(level, data);
+}
+
+void Texture1D::sub_image(unsigned level, int x, unsigned wd, const void *data)
+{
+	if(width==0)
+		throw invalid_operation("Texture3D::image");
+
+	Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
+	allocate(level);
+
+	PixelComponents comp = get_components(storage_fmt);
+	DataType type = get_component_type(storage_fmt);
+	if(ARB_direct_state_access)
+		glTextureSubImage1D(id, level, x, wd, comp, type, data);
+	else
+		glTexSubImage1D(target, level, x, wd, comp, type, data);
+
+	if(auto_gen_mipmap && level==0)
+		generate_mipmap();
+}
+
+void Texture1D::sub_image(unsigned level, int x, unsigned wd, PixelComponents comp, DataType type, const void *data)
+{
+	if(comp!=get_components(format) || type!=get_component_type(format))
+		throw incompatible_data("Texture1D::sub_image");
+	sub_image(level, x, wd, data);
+}
+
+void Texture1D::image(const Graphics::Image &img, unsigned lv)
+{
+	if(img.get_height()!=1)
+		throw incompatible_data("Texture1D::image");
+
+	unsigned w = img.get_width();
+	PixelFormat fmt = pixelformat_from_image(img);
+	if(width==0)
+		storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, lv);
+	else if(w!=width)
+		throw incompatible_data("Texture1D::image");
+
+	image(0, img.get_pixels());
+}
+
+unsigned Texture1D::get_n_levels() const
+{
+	unsigned n = 0;
+	for(unsigned s=width; s; s>>=1, ++n) ;
+	return n;
+}
+
+unsigned Texture1D::get_level_size(unsigned level) const
+{
+	return width>>level;
+}
+
+UInt64 Texture1D::get_data_size() const
+{
+	return id ? width*get_pixel_size(storage_fmt) : 0;
+}
+
+
+Texture1D::Loader::Loader(Texture1D &t):
+	DataFile::DerivedObjectLoader<Texture1D, Texture::Loader>(t)
+{
+	init();
+}
+
+Texture1D::Loader::Loader(Texture1D &t, Collection &c):
+	DataFile::DerivedObjectLoader<Texture1D, Texture::Loader>(t, c)
+{
+	init();
+}
+
+void Texture1D::Loader::init()
+{
+	add("raw_data", &Loader::raw_data);
+	add("storage", &Loader::storage);
+	add("storage", &Loader::storage_levels);
+}
+
+void Texture1D::Loader::raw_data(const string &data)
+{
+	obj.image(0, data.data());
+}
+
+void Texture1D::Loader::storage(PixelFormat fmt, unsigned w)
+{
+	obj.storage(fmt, w);
+}
+
+void Texture1D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned l)
+{
+	obj.storage(fmt, w, l);
+}
+
+} // namespace GL
+} // namespace Msp