Store implementation limits in a central struct

[libs/gl.git] / source / core / uniformblock.cpp

diff --git a/source/core/uniformblock.cpp b/source/core/uniformblock.cpp
index cc8945cf2093358d7df19ccebfe5e92ee9fffa61..59871cdde8249b3b90e0dd03a89db66963e2efd6 100644 (file)
--- a/source/core/uniformblock.cpp
+++ b/source/core/uniformblock.cpp
@@ -3,6 +3,7 @@
 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
 #include "buffer.h"
 #include "color.h"
+#include "deviceinfo.h"
 #include "error.h"
 #include "matrix.h"
 #include "uniform.h"
@@ -14,77 +15,86 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-UniformBlock::UniformBlock():
-       size(0),
-       buf_range(0)
+DefaultUniformBlock::DefaultUniformBlock()
 {
        static Require _req(ARB_shader_objects);
 }
 
-UniformBlock::UniformBlock(unsigned s):
+void DefaultUniformBlock::attach(const Program::UniformInfo &info, const Uniform &uni)
+{
+       if(info.block->bind_point>=0)
+               throw invalid_argument("DefaultUniformBlock::attach");
+
+       attach(info.location, uni);
+}
+
+void DefaultUniformBlock::attach(int index, const Uniform &uni)
+{
+       if(index<0)
+               return;
+
+       if(static_cast<unsigned>(index)>=uniforms.size())
+               uniforms.resize(index+1, 0);
+       uniforms[index] = &uni;
+}
+
+void DefaultUniformBlock::apply(int index) const
+{
+       if(index>=0)
+               throw invalid_argument("DefaultUniformBlock::apply");
+
+       for(unsigned i=0; i<uniforms.size(); ++i)
+               if(uniforms[i])
+                       uniforms[i]->apply(i);
+}
+
+
+BufferBackedUniformBlock::BufferBackedUniformBlock(unsigned s):
        size(s),
+       data(size),
        buf_range(0)
 {
-       static Require _req(ARB_uniform_buffer_object);
+       static Require _req(ARB_shader_objects);
+       static Require _req2(ARB_uniform_buffer_object);
 
        if(!size)
-               throw invalid_argument("UniformBlock::UniformBlock");
-       data.resize(size);
+               throw invalid_argument("BufferBackedUniformBlock::BufferBackedUniformBlock");
 }
 
-UniformBlock::~UniformBlock()
+BufferBackedUniformBlock::~BufferBackedUniformBlock()
 {
        delete buf_range;
 }
 
-unsigned UniformBlock::get_alignment() const
+unsigned BufferBackedUniformBlock::get_alignment() const
 {
-       return BufferRange::get_uniform_buffer_alignment();
+       return Limits::get_global().uniform_buffer_alignment;
 }
 
-void UniformBlock::location_changed(Buffer *buf, unsigned off, unsigned) const
+void BufferBackedUniformBlock::location_changed(Buffer *buf, unsigned off, unsigned) const
 {
        delete buf_range;
-       buf_range = new BufferRange(*buf, off, size);
+       buf_range = buf->create_range(off, size);
 }
 
-void UniformBlock::attach(int index, const Uniform &uni)
+void BufferBackedUniformBlock::attach(const Program::UniformInfo &info, const Uniform &uni)
 {
-       if(size)
-               throw invalid_operation("UniformBlock::attach");
+       if(info.block->bind_point<0)
+               throw invalid_argument("BufferBackedUniformBlock::attach");
 
-       uniforms[index] = &uni;
-}
-
-void UniformBlock::attach(const Program::UniformInfo &info, const Uniform &uni)
-{
-       if(size)
-       {
-               uni.store(info, &data[info.location]);
-               dirty = true;
-       }
-       else
-               uniforms[info.location] = &uni;
+       uni.store(info, &data[info.offset]);
+       dirty = true;
 }
 
-void UniformBlock::apply(int index) const
+void BufferBackedUniformBlock::apply(int index) const
 {
-       if((index>=0) != (size>0))
+       if(index<0)
+               throw invalid_argument("BufferBackedUniformBlock::apply");
+       if(!get_buffer())
                throw invalid_operation("UniformBlock::apply");
 
-       if(size)
-       {
-               if(!get_buffer())
-                       throw invalid_operation("UniformBlock::apply");
-
-               refresh();
-               buf_range->bind_to(UNIFORM_BUFFER, index);
-       }
-       else
-       {
-               for(map<int, const Uniform *>::const_iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
-                       i->second->apply(i->first);
-       }
+       refresh();
+       buf_range->bind_to(UNIFORM_BUFFER, index);
 }
 
 } // namespace GL