Add loading support for AmbientOcclusion

[libs/gl.git] / source / renderbuffer.cpp

diff --git a/source/renderbuffer.cpp b/source/renderbuffer.cpp
index c920633e0f2e0e84a009cab91477a1b0197a93c8..5bea07fc81e60a70c26c7744f3e7d5a6434bc621 100644 (file)
--- a/source/renderbuffer.cpp
+++ b/source/renderbuffer.cpp
@@ -1,7 +1,11 @@
-#include "ext_framebuffer_multisample.h"
-#include "ext_framebuffer_object.h"
+#include <msp/gl/extensions/arb_direct_state_access.h>
+#include <msp/gl/extensions/ext_framebuffer_multisample.h>
+#include <msp/gl/extensions/ext_framebuffer_object.h>
+#include "misc.h"
 #include "renderbuffer.h"
 
+using namespace std;
+
 namespace Msp {
 namespace GL {
 
@@ -9,7 +13,10 @@ Renderbuffer::Renderbuffer()
 {
        static Require _req(EXT_framebuffer_object);
 
-       glGenRenderbuffers(1, &id);
+       if(ARB_direct_state_access)
+               glCreateRenderbuffers(1, &id);
+       else
+               glGenRenderbuffers(1, &id);
 }
 
 Renderbuffer::~Renderbuffer()
@@ -17,22 +24,56 @@ Renderbuffer::~Renderbuffer()
        glDeleteRenderbuffers(1, &id);
 }
 
+PixelFormat Renderbuffer::normalize_format(PixelFormat fmt)
+{
+       if(!get_component_size(fmt) && OES_required_internalformat)
+               return get_default_sized_pixelformat(fmt);
+
+       return fmt;
+}
+
 void Renderbuffer::storage(PixelFormat fmt, unsigned wd, unsigned ht)
 {
-       Bind _bind(this, true);
+       fmt = normalize_format(fmt);
+       require_pixelformat(fmt);
        width = wd;
        height = ht;
-       glRenderbufferStorage(GL_RENDERBUFFER, fmt, width, height);
+       if(ARB_direct_state_access)
+               glNamedRenderbufferStorage(id, fmt, width, height);
+       else
+       {
+               BindRestore _bind(this);
+               glRenderbufferStorage(GL_RENDERBUFFER, fmt, width, height);
+       }
+}
+
+unsigned Renderbuffer::get_max_samples()
+{
+       static unsigned max_samples = (EXT_framebuffer_multisample ? get_i(GL_MAX_SAMPLES) : 0);
+       return max_samples;
 }
 
 void Renderbuffer::storage_multisample(unsigned samples, PixelFormat fmt, unsigned wd, unsigned ht)
 {
+       if(!samples)
+               return storage(fmt, wd, ht);
+
        static Require _req(EXT_framebuffer_multisample);
+       if(samples>get_max_samples())
+               throw out_of_range("Renderbuffer::storage_multisample");
+
+       fmt = normalize_format(fmt);
+       require_pixelformat(fmt);
 
-       Bind _bind(this, true);
        width = wd;
        height = ht;
-       glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, fmt, width, height);
+       if(ARB_direct_state_access)
+               glNamedRenderbufferStorageMultisample(id, samples, fmt, width, height);
+       else
+       {
+               BindRestore _bind(this);
+               glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, fmt, width, height);
+       }
 }
 
 void Renderbuffer::bind() const