-#include <stdexcept>
-#include <msp/gl/extensions/arb_shader_objects.h>
-#include <msp/gl/extensions/arb_uniform_buffer_object.h>
-#include "buffer.h"
-#include "color.h"
-#include "error.h"
-#include "matrix.h"
-#include "uniform.h"
+#include <algorithm>
+#include "device.h"
#include "uniformblock.h"
-#include "vector.h"
using namespace std;
namespace Msp {
namespace GL {
-DefaultUniformBlock::DefaultUniformBlock()
-{
- static Require _req(ARB_shader_objects);
-}
+UniformBlock::UniformBlock(const ReflectData::UniformBlockInfo &info):
+ UniformBlockBackend(info.bind_point>=0),
+ data(info.data_size)
+{ }
-void DefaultUniformBlock::attach(const Program::UniformInfo &info, const Uniform &uni)
+size_t UniformBlock::get_alignment() const
{
- if(info.block->bind_point>=0)
- throw invalid_argument("DefaultUniformBlock::attach");
-
- uniforms[info.location] = &uni;
+ return Device::get_current().get_info().limits.uniform_buffer_alignment;
}
-void DefaultUniformBlock::attach(int index, const Uniform &uni)
+void UniformBlock::store(const ReflectData::UniformInfo &info, size_t array_size, const void *value)
{
- uniforms[index] = &uni;
-}
-
-void DefaultUniformBlock::apply(int index) const
-{
- if(index>=0)
- throw invalid_argument("DefaultUniformBlock::apply");
-
- for(map<int, const Uniform *>::const_iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
- i->second->apply(i->first);
-}
-
-
-BufferBackedUniformBlock::BufferBackedUniformBlock(unsigned s):
- size(s),
- data(size),
- buf_range(0)
-{
- static Require _req(ARB_shader_objects);
- static Require _req2(ARB_uniform_buffer_object);
-
- if(!size)
- throw invalid_argument("BufferBackedUniformBlock::BufferBackedUniformBlock");
-}
+ array_size = min(array_size, max<size_t>(info.array_size, 1U));
+
+ size_t store_offset;
+ bool packed;
+ if(info.block->bind_point==ReflectData::DEFAULT_BLOCK)
+ {
+ if(info.location<0)
+ return;
+
+ store_offset = info.location*16;
+ packed = true;
+ }
+ else
+ {
+ store_offset = info.offset;
+ if(array_size!=1 && info.array_stride!=get_type_size(info.type))
+ packed = false;
+ else if(is_matrix(info.type))
+ packed = (info.matrix_stride==get_type_size(get_matrix_column_type(info.type)));
+ else
+ packed = true;
+ }
+
+ char *store_ptr = data.data()+store_offset;
+ const char *value_ptr = static_cast<const char *>(value);
+ if(packed)
+ {
+ size_t value_size = array_size*get_type_size(info.type);
+ check_store_range(store_offset, value_size);
+ copy(value_ptr, value_ptr+value_size, store_ptr);
+ }
+ else if(is_matrix(info.type))
+ {
+ unsigned col_size = get_type_size(get_matrix_column_type(info.type));
+ unsigned cols = get_type_size(info.type)/col_size;
+ check_store_range(store_offset, (array_size-1)*info.array_stride+(cols-1)*info.matrix_stride+col_size);
+ for(unsigned i=0; i<array_size; ++i)
+ {
+ char *elem_ptr = store_ptr;
+ for(unsigned j=0; j<cols; ++j)
+ {
+ copy(value_ptr, value_ptr+col_size, elem_ptr);
+ value_ptr += col_size;
+ elem_ptr += info.matrix_stride;
+ }
+ store_ptr += info.array_stride;
+ }
+ }
+ else
+ {
+ unsigned elem_size = get_type_size(info.type);
+ check_store_range(store_offset, (array_size-1)*info.array_stride+elem_size);
+ for(unsigned i=0; i<array_size; ++i)
+ {
+ copy(value_ptr, value_ptr+elem_size, store_ptr);
+ value_ptr += elem_size;
+ store_ptr += info.array_stride;
+ }
+ }
-BufferBackedUniformBlock::~BufferBackedUniformBlock()
-{
- delete buf_range;
-}
-
-unsigned BufferBackedUniformBlock::get_alignment() const
-{
- return BufferRange::get_uniform_buffer_alignment();
-}
-
-void BufferBackedUniformBlock::location_changed(Buffer *buf, unsigned off, unsigned) const
-{
- delete buf_range;
- buf_range = buf->create_range(off, size);
-}
-
-void BufferBackedUniformBlock::attach(const Program::UniformInfo &info, const Uniform &uni)
-{
- if(info.block->bind_point<0)
- throw invalid_argument("BufferBackedUniformBlock::attach");
-
- uni.store(info, &data[info.offset]);
dirty = true;
}
-void BufferBackedUniformBlock::apply(int index) const
+void UniformBlock::check_store_range(size_t offs, size_t size)
{
- if(index<0)
- throw invalid_argument("BufferBackedUniformBlock::apply");
- if(!get_buffer())
- throw invalid_operation("UniformBlock::apply");
-
- refresh();
- buf_range->bind_to(UNIFORM_BUFFER, index);
+#ifdef DEBUG
+ if(offs>data.size() || offs+size>data.size())
+ throw out_of_range("UniformBlock::store");
+#endif
}
} // namespace GL