X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Ftexture2dmultisample.cpp;fp=source%2Fcore%2Ftexture2dmultisample.cpp;h=18e21b76ba45eeeaaf585504104aa8558335daa3;hb=cd5f37b066352119cf92d53d0001af7ff99be437;hp=0000000000000000000000000000000000000000;hpb=328b67fa59ce6736949732ea8ff4ef7c6675e200;p=libs%2Fgl.git

diff --git a/source/core/texture2dmultisample.cpp b/source/core/texture2dmultisample.cpp
new file mode 100644
index 00000000..18e21b76
--- /dev/null
+++ b/source/core/texture2dmultisample.cpp
@@ -0,0 +1,73 @@
+#include <msp/gl/extensions/arb_direct_state_access.h>
+#include <msp/gl/extensions/arb_texture_multisample.h>
+#include <msp/gl/extensions/arb_texture_storage_multisample.h>
+#include "deviceinfo.h"
+#include "error.h"
+#include "texture2dmultisample.h"
+
+using namespace std;
+
+namespace Msp {
+namespace GL {
+
+Texture2DMultisample::Texture2DMultisample():
+	Texture(GL_TEXTURE_2D_MULTISAMPLE),
+	width(0),
+	height(0)
+{
+	static Require _req(ARB_texture_multisample);
+}
+
+void Texture2DMultisample::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned sm)
+{
+	if(width>0)
+	{
+		if(fmt!=format || wd!=width || ht!=height || sm!=samples)
+			throw incompatible_data("Texture2DMultisample::storage");
+		return;
+	}
+	if(wd==0 || ht==0)
+		throw invalid_argument("Texture2DMultisample::storage");
+	if(!sm || sm>Limits::get_global().max_samples)
+		throw invalid_argument("Texture2DMultisample::storage");
+
+	set_format(fmt);
+	width = wd;
+	height = ht;
+	samples = sm;
+
+	bool direct = ARB_texture_storage_multisample && ARB_direct_state_access;
+	if(!direct)
+	{
+		glActiveTexture(GL_TEXTURE0);
+		glBindTexture(target, id);
+	}
+
+	GLenum gl_fmt = get_gl_pixelformat(storage_fmt);
+	if(ARB_texture_storage_multisample)
+	{
+		if(ARB_direct_state_access)
+			glTextureStorage2DMultisample(id, samples, gl_fmt, width, height, false);
+		else
+			glTexStorage2DMultisample(target, samples, gl_fmt, width, height, false);
+	}
+	else
+		glTexImage2DMultisample(target, samples, gl_fmt, width, height, false);
+	apply_swizzle();
+
+	if(!direct)
+		glBindTexture(target, 0);
+}
+
+void Texture2DMultisample::image(const Graphics::Image &, unsigned)
+{
+	throw invalid_operation("Texture2DMultisample::image");
+}
+
+UInt64 Texture2DMultisample::get_data_size() const
+{
+	return id ? width*height*get_pixel_size(format)*samples : 0;
+}
+
+} // namespace GL
+} // namespace Msp