X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fvertexarray.cpp;h=54de0c0d1d01beadef6228a8bb29fd7ab7a5e66f;hb=85c82f93f4874bcf0b04332c9abb62cd2a5b181b;hp=5d5c244a04b6863c3b748c03197a65c97246408b;hpb=84bc56b96c21c831104a22e0cbd0f3b72ab5d8c3;p=libs%2Fgl.git

diff --git a/source/vertexarray.cpp b/source/vertexarray.cpp
index 5d5c244a..54de0c0d 100644
--- a/source/vertexarray.cpp
+++ b/source/vertexarray.cpp
@@ -1,188 +1,262 @@
-#include <GL/gl.h>
+/* $Id$
+
+This file is part of libmspgl
+Copyright © 2007-2010  Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#include "arb_vertex_program.h"
+#include "buffer.h"
+#include "extension.h"
+#include "gl.h"
+#include "version_1_2.h"
+#include "version_1_3.h"
 #include "vertexarray.h"
-#include "vertexbuffer.h"
 
 using namespace std;
 
 namespace Msp {
 namespace GL {
 
-uint get_stride(VertexFormat f)
+VertexArray::ArrayMask VertexArray::enabled_arrays;
+
+VertexArray::VertexArray(const VertexFormat &f):
+	defer_vbuf(true),
+	dirty(false)
 {
-	uint stride=0;
-	for(uint fmt=f; fmt; fmt>>=4)
-		stride+=(fmt&3)+1;
-	return stride*sizeof(float);
+	reset(f);
 }
 
-
-VertexArrayBuilder::VertexArrayBuilder(VertexArray &a, vector<float> &d):
-	data(d),
-	array(a),
-	format(array.get_format()),
-	stride(get_stride(format)),
-	cr(1), cg(1), cb(1), ca(1),
-	ts(0), tt(0), tr(0), tq(0),
-	nx(0), ny(0), nz(1)
+VertexArray::~VertexArray()
 { }
 
-void VertexArrayBuilder::vertex(float x, float y, float z, float w)
+void VertexArray::use_vertex_buffer()
 {
-	for(uint fmt=format; fmt; fmt>>=4)
+	if(vbuf)
+		return;
+
+	vbuf = new Buffer(ARRAY_BUFFER);
+	defer_vbuf = false;
+	dirty = true;
+}
+
+void VertexArray::use_vertex_buffer(Buffer *b)
+{
+	vbuf = b;
+	vbuf.keep();
+	defer_vbuf = false;
+	dirty = true;
+}
+
+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_multitex = false;
+	bool has_gen_attrs = false;
+	for(const unsigned char *c=format.begin(); c!=format.end(); ++c)
+	{
+		if(*c>=TEXCOORD1+4 && *c<ATTRIB1)
+			has_multitex = true;
+		if(*c>=ATTRIB1)
+			has_gen_attrs = true;
+	}
+	if(has_multitex)
+		static RequireVersion _ver(1, 3);
+	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_to(ARRAY_BUFFER);
+		if(dirty)
+		{
+			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)
 	{
-		uint size=(fmt&3)+1;
-		switch(fmt&12)
+		unsigned sz = (*c&3)+1;
+		unsigned t = *c>>2;
+		bool en = enabled_arrays.is_set(t);
+		switch(t)
 		{
 		case 0:
-			data.push_back(x);
-			data.push_back(y);
-			if(size>=3) data.push_back(z);
-			if(size>=4) data.push_back(w);
+			glVertexPointer(sz, GL_FLOAT, bpv, base+offset);
+			if(!en)
+				glEnableClientState(GL_VERTEX_ARRAY);
 			break;
-		case 4:
-			data.push_back(nx);
-			data.push_back(ny);
-			data.push_back(nz);
+		case 1:
+			glNormalPointer(GL_FLOAT, bpv, base+offset);
+			if(!en)
+				glEnableClientState(GL_NORMAL_ARRAY);
 			break;
-		case 8:
-			data.push_back(ts);
-			if(size>=2) data.push_back(tt);
-			if(size>=3) data.push_back(tr);
-			if(size>=4) data.push_back(tq);
+		case 2:
+			if(sz==1)
+				glColorPointer(4, GL_UNSIGNED_BYTE, bpv, base+offset);
+			else
+				glColorPointer(sz, GL_FLOAT, bpv, base+offset);
+			if(!en)
+				glEnableClientState(GL_COLOR_ARRAY);
 			break;
-		case 12:
-			if(size==1)
+		default:
+			if(t<11)
 			{
-				union { ubyte c[4]; float f; } u;
-				u.c[0]=(ubyte)(cr*255);
-				u.c[1]=(ubyte)(cg*255);
-				u.c[2]=(ubyte)(cb*255);
-				u.c[3]=(ubyte)(ca*255);
-				data.push_back(u.f);
+				if(t>3 || active_tex)
+				{
+					glClientActiveTexture(GL_TEXTURE0+(t-3));
+					active_tex = t-3;
+				}
+				glTexCoordPointer(sz, GL_FLOAT, bpv, base+offset);
+				if(!en)
+					glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 			}
 			else
 			{
-				data.push_back(cr);
-				data.push_back(cg);
-				data.push_back(cb);
-				if(size>=4) data.push_back(ca);
+				glVertexAttribPointerARB(t-11, sz, GL_FLOAT, false, bpv, base+offset);
+				if(!en)
+					glEnableVertexAttribArrayARB(t-11);
 			}
 			break;
 		}
+		found.set(t);
+		offset += sz;
 	}
-	//cout<<"Added vertex with "<<data.size()-old_size<<" floats\n";
+
+	for(unsigned i=0; i<64; ++i)
+		if(enabled_arrays.is_set(i) && !found.is_set(i))
+		{
+			if(i==0)
+				glDisableClientState(GL_VERTEX_ARRAY);
+			else if(i==1)
+				glDisableClientState(GL_NORMAL_ARRAY);
+			else if(i==2)
+				glDisableClientState(GL_COLOR_ARRAY);
+			else if(i>=3 && i<11)
+			{
+				if(i>3 || active_tex)
+					glClientActiveTexture(GL_TEXTURE0+(i-3));
+				glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+			}
+			else
+				glDisableVertexAttribArrayARB(i-11);
+		}
+
+	enabled_arrays = found;
+
+	if(active_tex)
+		glClientActiveTexture(GL_TEXTURE0);
+
+	if(vbuf)
+		Buffer::unbind_from(ARRAY_BUFFER);
 }
 
-VertexArrayBuilder::~VertexArrayBuilder()
+float *VertexArray::append()
 {
-	array.update_data();
+	data.insert(data.end(), stride, 0.0f);
+	set_dirty();
+	return &*(data.end()-stride);
 }
 
-
-VertexArray::VertexArray(VertexFormat f):
-	format(NODATA),
-	stride(get_stride(f)),
-	vbuf(0),
-	own_vbuf(false)
+float *VertexArray::modify(unsigned i)
 {
-	// Reverse the format so the first item is in lowest bits
-	for(uint fmt=f; fmt; fmt>>=4)
-		format=(format, static_cast<VertexFormat>(fmt&15));
+	set_dirty();
+	return &data[0]+i*stride;
 }
 
-VertexArray::~VertexArray()
+void VertexArray::set_dirty()
 {
-	if(own_vbuf)
-		delete vbuf;
+	dirty = true;
+	if(defer_vbuf)
+	{
+		vbuf = new Buffer(ARRAY_BUFFER);
+		defer_vbuf = false;
+	}
 }
 
-void VertexArray::use_vertex_buffer()
-{
-	if(vbuf) return;
 
-	vbuf=new VertexBuffer();
-	own_vbuf=true;
-	update_data();
+VertexArray::ArrayMask::ArrayMask()
+{
+	for(unsigned i=0; i<N; ++i)
+		mask[i] = 0;
 }
 
-void VertexArray::use_vertex_buffer(VertexBuffer *b)
+void VertexArray::ArrayMask::set(unsigned bit)
 {
-	if(vbuf) return;
-
-	vbuf=b;
-	update_data();
+	mask[bit/B] |= 1<<(bit%B);
 }
 
-void VertexArray::clear()
+bool VertexArray::ArrayMask::is_set(unsigned bit) const
 {
-	data.clear();
+	return mask[bit/B]&(1<<(bit%B));
 }
 
-void VertexArray::apply() const
-{
-	if(vbuf) vbuf->bind();
 
-	const float *base=vbuf?0:&data[0];
-	uint offset=0;
-	uint found=0;
-	for(uint fmt=format; fmt; fmt>>=4)
-	{
-		uint size=(fmt&3)+1;
-		switch(fmt&12)
-		{
-		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);
-			else
-				glColorPointer(size, GL_FLOAT, stride, base+offset);
-			break;
-		}
-		found|=1<<((fmt&12)>>2);
-		offset+=size;
-	}
+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));
+}
 
-	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);
 
-	VertexBuffer::unbind();
+void array_element(int i)
+{
+	glArrayElement(i);
 }
 
-/**
-Updates the VertexArray data to the VertexBuffer tied to the array, if any.
-*/
-void VertexArray::update_data()
+void draw_arrays(PrimitiveType mode, int first, unsigned count)
 {
-	if(vbuf)
-		vbuf->data(data.size()*sizeof(float), &data[0]);
+	glDrawArrays(mode, first, count);
 }
 
-void VertexArray::set_array(unsigned array, unsigned bit, unsigned mask) const
+void draw_elements(PrimitiveType mode, unsigned count, DataType type, const void *indices)
 {
-	if((enabled_arrays&mask) && !bit)
-	{
-		glDisableClientState(array);
-		enabled_arrays&=~mask;
-	}
-	else if(!(enabled_arrays&mask) && bit)
-	{
-		glEnableClientState(array);
-		enabled_arrays|=mask;
-	}
+	glDrawElements(mode, count, type, indices);
 }
 
-unsigned VertexArray::enabled_arrays=0;
-
+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