X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fvertexarray.cpp;h=5674bbe0ddda48472cc0423b5230fe754710b3fc;hp=6c0e5f1aea363c8de02eeaea1c714f7ac1196645;hb=bb162b9edd4b8c0e9faeed75da4148f5b9735450;hpb=ab59f5a9e66b3fc7872ad96ec7949940189f0819

diff --git a/source/vertexarray.cpp b/source/vertexarray.cpp
index 6c0e5f1a..5674bbe0 100644
--- a/source/vertexarray.cpp
+++ b/source/vertexarray.cpp
@@ -1,8 +1,10 @@
-#include "arb_multitexture.h"
-#include "arb_vertex_shader.h"
+#include <msp/gl/extensions/arb_multitexture.h>
+#include <msp/gl/extensions/arb_vertex_shader.h>
+#include <msp/gl/extensions/msp_legacy_features.h>
 #include "buffer.h"
 #include "error.h"
 #include "gl.h"
+#include "mesh.h"
 #include "vertexarray.h"
 
 using namespace std;
@@ -10,25 +12,31 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-VertexArray::VertexArray(const VertexFormat &f):
-	defer_vbuf(true),
-	dirty(false)
+bool VertexArray::legacy_used = false;
+
+VertexArray::VertexArray(const VertexFormat &f)
 {
 	reset(f);
 }
 
 VertexArray::~VertexArray()
-{ }
+{
+	/* Unbind accesses the current VertexArray, so a call from ~Bindable would
+	try to access destroyed data. */
+	if(current()==this)
+		unbind();
+}
 
 void VertexArray::reset(const VertexFormat &f)
 {
 	clear();
 	format = f;
 	stride = get_stride(format);
+	legacy = false;
 
 	arrays.clear();
 
-	unsigned offset = 0;
+	unsigned offs = 0;
 	for(const unsigned char *c=format.begin(); c!=format.end(); ++c)
 	{
 		unsigned slot = get_array_slot(*c);
@@ -37,9 +45,12 @@ void VertexArray::reset(const VertexFormat &f)
 
 		Array &arr = arrays[slot];
 		arr.component = *c;
-		arr.offset = offset;
+		arr.offset = offs;
 
-		offset += get_component_size(*c);
+		if(*c<ATTRIB1)
+			legacy = true;
+
+		offs += get_component_size(*c);
 	}
 }
 
@@ -68,24 +79,6 @@ unsigned VertexArray::get_array_slot(unsigned char comp)
 	}
 }
 
-void VertexArray::use_vertex_buffer()
-{
-	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::clear()
 {
 	data.clear();
@@ -99,127 +92,154 @@ void VertexArray::reserve(unsigned n)
 float *VertexArray::append()
 {
 	data.insert(data.end(), stride, 0.0f);
-	set_dirty();
+	update_offset();
+	dirty = true;
 	return &*(data.end()-stride);
 }
 
 float *VertexArray::modify(unsigned i)
 {
-	set_dirty();
+	dirty = true;
 	return &data[0]+i*stride;
 }
 
-void VertexArray::set_dirty()
+unsigned VertexArray::get_data_size() const
 {
-	dirty = true;
-	if(defer_vbuf)
-	{
-		vbuf = new Buffer(ARRAY_BUFFER);
-		defer_vbuf = false;
-	}
+	return data.size()*sizeof(float);
 }
 
-void VertexArray::apply() const
+void VertexArray::apply(bool use_legacy) const
 {
 	if(format.empty())
 		throw invalid_operation("VertexArray::apply");
+	// Don't mess up the vertex array object of a mesh
+	if(Mesh::current())
+		throw invalid_operation("VertexArray::apply");
+
+	/* Unbind first if the legacy flag changes.  The logic for supporting it
+	directly in apply_arrays would get too complicated, and this also allows
+	rebinding the same array with different legacy setting. */
+	if(legacy_used!=use_legacy)
+		unbind();
+
+	if(!use_legacy)
+		static Require _req(ARB_vertex_shader);
+	else if(legacy)
+		static Require _req(MSP_legacy_features);
 
 	const VertexArray *old = current();
-	if(!set_current(this))
+	/* If the array has been modified, apply it even if it was the last one to
+	be applied.  This is necessary to get the data updated to vertex buffer, and
+	to resync things after a format change.  Radeon drivers also have some
+	problems with modifying vertex arrays without re-setting the pointers. */
+	if(!set_current(this) && !dirty)
 		return;
 
-	if(vbuf)
-	{
-		vbuf->bind_to(ARRAY_BUFFER);
-		if(dirty)
-		{
-			vbuf->data(data.size()*sizeof(float), &data[0]);
-			dirty = false;
-		}
-	}
+	Buffer *vbuf = get_buffer();
+	Bind _bind_vbuf(vbuf, ARRAY_BUFFER);
+	if(vbuf && dirty)
+		update_buffer();
 
-	const float *base = (vbuf ? 0 : &data[0]);
+	const float *base = (vbuf ? reinterpret_cast<float *>(get_offset()) : &data[0]);
 	unsigned stride_bytes = stride*sizeof(float);
+	apply_arrays(&arrays, (old ? &old->arrays : 0), base, stride_bytes, use_legacy);
+}
+
+void VertexArray::apply_arrays(const vector<Array> *arrays, const vector<Array> *old_arrays, const float *base, unsigned stride_bytes, bool use_legacy)
+{
 	unsigned active_tex = 0;
-	unsigned n_arrays = arrays.size();
-	if(old)
-		n_arrays = max(n_arrays, old->arrays.size());
+	unsigned n_arrays = arrays ? arrays->size() : 0;
+	if(old_arrays)
+		n_arrays = max<unsigned>(n_arrays, old_arrays->size());
 	for(unsigned i=0; i<n_arrays; ++i)
 	{
-		const Array *arr = ((i<arrays.size() && arrays[i].component) ? &arrays[i] : 0);
-		const Array *old_arr = ((old && i<old->arrays.size() && old->arrays[i].component) ? &old->arrays[i] : 0);
+		const Array *arr = ((arrays && i<arrays->size() && (*arrays)[i].component) ? &(*arrays)[i] : 0);
+		const Array *old_arr = ((old_arrays && i<old_arrays->size() && (*old_arrays)[i].component) ? &(*old_arrays)[i] : 0);
 		if(!arr && !old_arr)
 			continue;
 
 		unsigned char comp = (arr ? arr->component : old_arr->component);
 		unsigned sz = get_component_size(comp);
 		unsigned t = get_component_type(comp);
-		GLenum array_type = 0;
-		if(t==get_component_type(VERTEX3))
+		if(use_legacy)
 		{
-			if(arr)
-				glVertexPointer(sz, GL_FLOAT, stride_bytes, base+arr->offset);
-			array_type = GL_VERTEX_ARRAY;
-		}
-		else if(t==get_component_type(NORMAL3))
-		{
-			if(arr)
-				glNormalPointer(GL_FLOAT, stride_bytes, base+arr->offset);
-			array_type = GL_NORMAL_ARRAY;
-		}
-		else if(t==get_component_type(COLOR4_FLOAT))
-		{
-			if(arr)
+			GLenum array_type = 0;
+			if(t==get_component_type(VERTEX3))
 			{
-				if(sz==1)
-					glColorPointer(4, GL_UNSIGNED_BYTE, stride_bytes, base+arr->offset);
-				else
-					glColorPointer(sz, GL_FLOAT, stride_bytes, base+arr->offset);
+				if(arr)
+					glVertexPointer(sz, GL_FLOAT, stride_bytes, base+arr->offset);
+				array_type = GL_VERTEX_ARRAY;
 			}
-			array_type = GL_COLOR_ARRAY;
-		}
-		else if(comp>=TEXCOORD1 && comp<=TEXCOORD4+12)
-		{
-			t -= get_component_type(TEXCOORD1);
-			if(t>0 || active_tex)
+			else if(t==get_component_type(NORMAL3))
+			{
+				if(arr)
+					glNormalPointer(GL_FLOAT, stride_bytes, base+arr->offset);
+				array_type = GL_NORMAL_ARRAY;
+			}
+			else if(t==get_component_type(COLOR4_FLOAT))
 			{
-				glClientActiveTexture(GL_TEXTURE0+t);
-				active_tex = t;
+				if(arr)
+				{
+					if(sz==1)
+						glColorPointer(4, GL_UNSIGNED_BYTE, stride_bytes, base+arr->offset);
+					else
+						glColorPointer(sz, GL_FLOAT, stride_bytes, base+arr->offset);
+				}
+				array_type = GL_COLOR_ARRAY;
+			}
+			else if(comp>=TEXCOORD1 && comp<=TEXCOORD4+12)
+			{
+				t -= get_component_type(TEXCOORD1);
+				if(t>0 || active_tex)
+				{
+					glClientActiveTexture(GL_TEXTURE0+t);
+					active_tex = t;
+				}
+				if(arr)
+					glTexCoordPointer(sz, GL_FLOAT, stride_bytes, base+arr->offset);
+				array_type = GL_TEXTURE_COORD_ARRAY;
+			}
+
+			if(array_type)
+			{
+				// Only change enable state if needed
+				if(arr && !old_arr)
+					glEnableClientState(array_type);
+				else if(old_arr && !arr)
+					glDisableClientState(array_type);
+
+				continue;
 			}
-			if(arr)
-				glTexCoordPointer(sz, GL_FLOAT, stride_bytes, base+arr->offset);
-			array_type = GL_TEXTURE_COORD_ARRAY;
 		}
-		else
+
+		if(t>=get_component_type(ATTRIB1))
+			t -= get_component_type(ATTRIB1);
+		if(arr)
 		{
-			if(t>=get_component_type(ATTRIB1))
-				t -= get_component_type(ATTRIB1);
-			if(arr)
+			if(arr->component==COLOR4_UBYTE)
+				glVertexAttribPointer(t, 4, GL_UNSIGNED_BYTE, true, stride_bytes, base+arr->offset);
+			else
 				glVertexAttribPointer(t, sz, GL_FLOAT, false, stride_bytes, base+arr->offset);
 		}
 
 		// Only change enable state if needed
 		if(arr && !old_arr)
-		{
-			if(array_type)
-				glEnableClientState(array_type);
-			else
-				glEnableVertexAttribArray(t);
-		}
+			glEnableVertexAttribArray(t);
 		else if(old_arr && !arr)
-		{
-			if(array_type)
-				glDisableClientState(array_type);
-			else
-				glDisableVertexAttribArray(t);
-		}
+			glDisableVertexAttribArray(t);
 	}
 
 	if(active_tex)
 		glClientActiveTexture(GL_TEXTURE0);
 
-	if(vbuf)
-		Buffer::unbind_from(ARRAY_BUFFER);
+	legacy_used = use_legacy;
+}
+
+void VertexArray::unbind()
+{
+	const VertexArray *old = current();
+	if(set_current(0))
+		apply_arrays(0, &old->arrays, 0, 0, legacy_used);
 }