+++ /dev/null
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007-2009 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include "arb_vertex_program.h"
-#include "extension.h"
-#include "gl.h"
-#include "version_1_2.h"
-#include "vertexarray.h"
-#include "vertexbuffer.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-VertexArray::VertexArray(const VertexFormat &f):
- vbuf(0),
- own_vbuf(false)
-{
- reset(f);
-}
-
-VertexArray::~VertexArray()
-{
- if(own_vbuf)
- delete vbuf;
-}
-
-void VertexArray::use_vertex_buffer()
-{
- if(vbuf && own_vbuf)
- return;
-
- vbuf=new Buffer(ARRAY_BUFFER);
- own_vbuf=true;
-
- update_data();
-}
-
-void VertexArray::use_vertex_buffer(Buffer *b)
-{
- if(own_vbuf)
- delete vbuf;
- vbuf=b;
- own_vbuf=false;
-
- update_data();
-}
-
-void VertexArray::reserve(unsigned n)
-{
- data.reserve(n*stride);
-}
-
-void VertexArray::clear()
-{
- data.clear();
-}
-
-void VertexArray::reset(const VertexFormat &f)
-{
- clear();
- format=f;
- stride=get_stride(format);
-
- bool has_gen_attrs=false;
- for(const unsigned char *c=format.begin(); (!has_gen_attrs && c!=format.end()); ++c)
- has_gen_attrs=(*c>=ATTRIB1);
- if(has_gen_attrs)
- static RequireExtension _ext("GL_ARB_vertex_program");
-}
-
-void VertexArray::apply() const
-{
- if(format.empty())
- throw InvalidState("Trying to apply a vertex array with no data");
-
- if(vbuf)
- vbuf->bind();
-
- const float *base=vbuf?0:&data[0];
- unsigned offset=0;
- unsigned found=0;
- unsigned bpv=stride*sizeof(float);
- for(const unsigned char *c=format.begin(); c!=format.end(); ++c)
- {
- unsigned sz=(*c&3)+1;
- unsigned t=*c>>2;
- switch(t)
- {
- case 0:
- glVertexPointer(sz, GL_FLOAT, bpv, base+offset);
- break;
- case 1:
- glNormalPointer(GL_FLOAT, bpv, base+offset);
- break;
- case 2:
- glTexCoordPointer(sz, GL_FLOAT, bpv, base+offset);
- break;
- case 3:
- if(sz==1)
- glColorPointer(4, GL_UNSIGNED_BYTE, bpv, base+offset);
- else
- glColorPointer(sz, GL_FLOAT, bpv, base+offset);
- break;
- default:
- glVertexAttribPointerARB(t-4, sz, GL_FLOAT, false, bpv, base+offset);
- break;
- }
- found|=1<<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=4; i<32; ++i)
- set_array(i-4, (found>>i)&1, 1<<i);
-
- if(vbuf)
- vbuf->unbind();
-}
-
-/**
-Updates the VertexArray data to the VertexBuffer tied to the array, if any.
-*/
-void VertexArray::update_data()
-{
- if(vbuf)
- {
- vbuf->data(data.size()*sizeof(float), &data[0]);
- vbuf->unbind();
- }
-}
-
-float *VertexArray::append()
-{
- data.insert(data.end(), stride, 0.0f);
- return &*data.end()-stride;
-}
-
-void VertexArray::set_array(unsigned array, bool en, unsigned mask) const
-{
- if((enabled_arrays&mask) && !en)
- {
- if(mask<16)
- glDisableClientState(array);
- else
- glDisableVertexAttribArrayARB(array);
- enabled_arrays&=~mask;
- }
- else if(!(enabled_arrays&mask) && en)
- {
- if(mask<16)
- glEnableClientState(array);
- else
- glEnableVertexAttribArrayARB(array);
- enabled_arrays|=mask;
- }
-}
-
-unsigned VertexArray::enabled_arrays=0;
-
-
-VertexArray::Loader::Loader(VertexArray &a):
- VertexArrayBuilder(a)
-{
- add("vertex2", static_cast<void (Loader::*)(float, float)>(&Loader::vertex));
- add("vertex3", static_cast<void (Loader::*)(float, float, float)>(&Loader::vertex));
- add("vertex4", static_cast<void (Loader::*)(float, float, float, float)>(&Loader::vertex));
- add("normal3", static_cast<void (Loader::*)(float, float, float)>(&Loader::normal));
- add("texcoord1", static_cast<void (Loader::*)(float)>(&Loader::texcoord));
- 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("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));
-}
-
-
-void array_element(int i)
-{
- glArrayElement(i);
-}
-
-void draw_arrays(PrimitiveType mode, int first, unsigned count)
-{
- glDrawArrays(mode, first, count);
-}
-
-void draw_elements(PrimitiveType mode, unsigned count, DataType type, const void *indices)
-{
- glDrawElements(mode, count, type, indices);
-}
-
-void draw_range_elements(PrimitiveType mode, unsigned low, unsigned high, unsigned count, DataType type, const void *indices)
-{
- static RequireVersion _ver(1, 2);
- glDrawRangeElements(mode, low, high, count, type, indices);
-}
-
-} // namespace GL
-} // namespace Msp