-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include <GL/gl.h>
+#include "arb_multitexture.h"
+#include "arb_vertex_shader.h"
+#include "buffer.h"
+#include "error.h"
+#include "gl.h"
#include "vertexarray.h"
-#include "vertexbuffer.h"
using namespace std;
namespace Msp {
namespace GL {
-VertexArray::VertexArray(VertexFormat f):
- format(NODATA),
- stride(get_stride(f)),
- vbuf(0),
- own_vbuf(false)
+VertexArray::ArrayMask VertexArray::enabled_arrays;
+
+VertexArray::VertexArray(const VertexFormat &f):
+ defer_vbuf(true),
+ dirty(false)
{
- // Reverse the format so the first item is in lowest bits. This makes handling in bind() easier.
- for(uint fmt=f; fmt; fmt>>=4)
- format=(format, static_cast<VertexFormat>(fmt&15));
+ reset(f);
}
VertexArray::~VertexArray()
+{ }
+
+void VertexArray::reset(const VertexFormat &f)
{
- if(own_vbuf)
- delete vbuf;
+ clear();
+ format = f;
+ stride = get_stride(format);
+
+ bool has_multitex = false;
+ bool has_gen_attrs = false;
+ for(const unsigned char *c=format.begin(); c!=format.end(); ++c)
+ {
+ if(*c>=TEXCOORD1+4 && *c<=TEXCOORD4+12)
+ has_multitex = true;
+ if(*c==TANGENT3 || *c==BINORMAL3 || *c>=ATTRIB1)
+ has_gen_attrs = true;
+ }
+ if(has_multitex)
+ static Require _req(ARB_multitexture);
+ if(has_gen_attrs)
+ static Require _req(ARB_vertex_shader);
}
void VertexArray::use_vertex_buffer()
{
- if(vbuf) return;
+ if(vbuf)
+ return;
- vbuf=new VertexBuffer();
- own_vbuf=true;
- update_data();
+ vbuf = new Buffer(ARRAY_BUFFER);
+ defer_vbuf = false;
+ dirty = true;
}
-void VertexArray::use_vertex_buffer(VertexBuffer *b)
+void VertexArray::use_vertex_buffer(Buffer *b)
{
- if(vbuf) return;
-
- vbuf=b;
- update_data();
+ vbuf = b;
+ vbuf.keep();
+ defer_vbuf = false;
+ dirty = true;
}
void VertexArray::clear()
data.clear();
}
-void VertexArray::reset(VertexFormat f)
+void VertexArray::reserve(unsigned n)
{
- clear();
- format=NODATA;
- for(uint fmt=f; fmt; fmt>>=4)
- format=(format, static_cast<VertexFormat>(fmt&15));
- stride=get_stride(format);
+ data.reserve(n*stride);
+}
+
+float *VertexArray::append()
+{
+ data.insert(data.end(), stride, 0.0f);
+ set_dirty();
+ return &*(data.end()-stride);
+}
+
+float *VertexArray::modify(unsigned i)
+{
+ set_dirty();
+ return &data[0]+i*stride;
}
-RefPtr<VertexArrayBuilder> VertexArray::modify()
+void VertexArray::set_dirty()
{
- return new VertexArrayBuilder(*this, data);
+ dirty = true;
+ if(defer_vbuf)
+ {
+ vbuf = new Buffer(ARRAY_BUFFER);
+ defer_vbuf = false;
+ }
}
void VertexArray::apply() const
{
- if(vbuf) vbuf->bind();
+ if(format.empty())
+ throw invalid_operation("VertexArray::apply");
- const float *base=vbuf?0:&data[0];
- uint offset=0;
- uint found=0;
- for(uint fmt=format; fmt; fmt>>=4)
+ if(vbuf)
{
- uint size=(fmt&3)+1;
- switch(fmt&12)
+ vbuf->bind_to(ARRAY_BUFFER);
+ if(dirty)
{
- case 0:
- glVertexPointer(size, GL_FLOAT, stride, base+offset);
- break;
- case 4:
- glNormalPointer(GL_FLOAT, stride, base+offset);
- break;
- case 8:
- glTexCoordPointer(size, GL_FLOAT, stride, base+offset);
- break;
- case 12:
- if(size==1)
- glColorPointer(4, GL_UNSIGNED_BYTE, stride, base+offset);
+ vbuf->data(data.size()*sizeof(float), &data[0]);
+ dirty = false;
+ }
+ }
+
+ const float *base = (vbuf ? 0 : &data[0]);
+ unsigned offset = 0;
+ ArrayMask found;
+ unsigned bpv = stride*sizeof(float);
+ unsigned active_tex = 0;
+ for(const unsigned char *c=format.begin(); c!=format.end(); ++c)
+ {
+ unsigned sz = get_component_size(*c);
+ unsigned t = get_component_type(*c);
+ bool en = enabled_arrays.is_set(t);
+ if(t==get_component_type(VERTEX3))
+ {
+ glVertexPointer(sz, GL_FLOAT, bpv, base+offset);
+ if(!en)
+ glEnableClientState(GL_VERTEX_ARRAY);
+ }
+ else if(t==get_component_type(NORMAL3))
+ {
+ glNormalPointer(GL_FLOAT, bpv, base+offset);
+ if(!en)
+ glEnableClientState(GL_NORMAL_ARRAY);
+ }
+ else if(t==get_component_type(COLOR4_FLOAT))
+ {
+ if(sz==1)
+ glColorPointer(4, GL_UNSIGNED_BYTE, bpv, base+offset);
else
- glColorPointer(size, GL_FLOAT, stride, base+offset);
- break;
+ glColorPointer(sz, GL_FLOAT, bpv, base+offset);
+ if(!en)
+ glEnableClientState(GL_COLOR_ARRAY);
+ }
+ else if(*c>=TEXCOORD1 && *c<=TEXCOORD4+12)
+ {
+ t -= get_component_type(TEXCOORD1);
+ if(t>0 || active_tex)
+ {
+ glClientActiveTexture(GL_TEXTURE0+t);
+ active_tex = t;
+ }
+ glTexCoordPointer(sz, GL_FLOAT, bpv, base+offset);
+ if(!en)
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+ }
+ else
+ {
+ if(t>=get_component_type(ATTRIB1))
+ t -= get_component_type(ATTRIB1);
+ glVertexAttribPointer(t, sz, GL_FLOAT, false, bpv, base+offset);
+ if(!en)
+ glEnableVertexAttribArray(t);
}
- found|=1<<((fmt&12)>>2);
- offset+=size;
+ found.set(t);
+ offset += sz;
}
- set_array(GL_VERTEX_ARRAY, found&1, 1);
- set_array(GL_NORMAL_ARRAY, found&2, 2);
- set_array(GL_TEXTURE_COORD_ARRAY, found&4, 4);
- set_array(GL_COLOR_ARRAY, found&8, 8);
+ for(unsigned i=0; i<64; ++i)
+ if(enabled_arrays.is_set(i) && !found.is_set(i))
+ {
+ if(i==get_component_type(VERTEX3))
+ glDisableClientState(GL_VERTEX_ARRAY);
+ else if(i==get_component_type(NORMAL3))
+ glDisableClientState(GL_NORMAL_ARRAY);
+ else if(i==get_component_type(COLOR4_FLOAT))
+ glDisableClientState(GL_COLOR_ARRAY);
+ else if(i>=get_component_type(TEXCOORD1) && i<=get_component_type(TEXCOORD1)+3)
+ {
+ unsigned j = i-get_component_type(TEXCOORD1);
+ if(j>0 || active_tex)
+ glClientActiveTexture(GL_TEXTURE0+j);
+ glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+ active_tex = j;
+ }
+ else if(i<get_component_type(ATTRIB1))
+ glDisableVertexAttribArray(i);
+ else
+ glDisableVertexAttribArray(i-get_component_type(ATTRIB1));
+ }
- VertexBuffer::unbind();
+ enabled_arrays = found;
+
+ if(active_tex)
+ glClientActiveTexture(GL_TEXTURE0);
+
+ if(vbuf)
+ Buffer::unbind_from(ARRAY_BUFFER);
}
-/**
-Updates the VertexArray data to the VertexBuffer tied to the array, if any.
-*/
-void VertexArray::update_data()
+
+VertexArray::ArrayMask::ArrayMask()
{
- if(vbuf)
- vbuf->data(data.size()*sizeof(float), &data[0]);
+ for(unsigned i=0; i<N; ++i)
+ mask[i] = 0;
}
-void VertexArray::set_array(unsigned array, unsigned bit, unsigned mask) const
+void VertexArray::ArrayMask::set(unsigned bit)
{
- if((enabled_arrays&mask) && !bit)
- {
- glDisableClientState(array);
- enabled_arrays&=~mask;
- }
- else if(!(enabled_arrays&mask) && bit)
- {
- glEnableClientState(array);
- enabled_arrays|=mask;
- }
+ mask[bit/B] |= 1<<(bit%B);
}
-unsigned VertexArray::enabled_arrays=0;
+bool VertexArray::ArrayMask::is_set(unsigned bit) const
+{
+ return mask[bit/B]&(1<<(bit%B));
+}
VertexArray::Loader::Loader(VertexArray &a):
- VertexArrayBuilder(a, a.data)
+ VertexArrayBuilder(a)
{
add("vertex2", static_cast<void (Loader::*)(float, float)>(&Loader::vertex));
add("vertex3", static_cast<void (Loader::*)(float, float, float)>(&Loader::vertex));
add("texcoord2", static_cast<void (Loader::*)(float, float)>(&Loader::texcoord));
add("texcoord3", static_cast<void (Loader::*)(float, float, float)>(&Loader::texcoord));
add("texcoord4", static_cast<void (Loader::*)(float, float, float, float)>(&Loader::texcoord));
+ add("multitexcoord1", static_cast<void (Loader::*)(unsigned, float)>(&Loader::multitexcoord));
+ add("multitexcoord2", static_cast<void (Loader::*)(unsigned, float, float)>(&Loader::multitexcoord));
+ add("multitexcoord3", static_cast<void (Loader::*)(unsigned, float, float, float)>(&Loader::multitexcoord));
+ add("multitexcoord4", static_cast<void (Loader::*)(unsigned, float, float, float, float)>(&Loader::multitexcoord));
add("color3", static_cast<void (Loader::*)(float, float, float)>(&Loader::color));
add("color4", static_cast<void (Loader::*)(float, float, float, float)>(&Loader::color));
+ add("attrib1", static_cast<void (Loader::*)(unsigned, float)>(&Loader::attrib));
+ add("attrib2", static_cast<void (Loader::*)(unsigned, float, float)>(&Loader::attrib));
+ add("attrib3", static_cast<void (Loader::*)(unsigned, float, float, float)>(&Loader::attrib));
+ add("attrib4", static_cast<void (Loader::*)(unsigned, float, float, float, float)>(&Loader::attrib));
+ add("tangent3", static_cast<void (Loader::*)(float, float, float)>(&Loader::tangent));
+ add("binormal3", static_cast<void (Loader::*)(float, float, float)>(&Loader::binormal));
}
} // namespace GL
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