X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftexunit.cpp;h=aa52aed4525a1c398aa2cf6f08793388074a723f;hb=619aae12e01f25e79626a94c973927e5599e99a5;hp=dde3d406ca71fcbb5cfa034805a91a9784da6fe7;hpb=f14435e58bfa0fa697a06ba9a454bb30cd37d9d8;p=libs%2Fgl.git

diff --git a/source/texunit.cpp b/source/texunit.cpp
index dde3d406..aa52aed4 100644
--- a/source/texunit.cpp
+++ b/source/texunit.cpp
@@ -1,7 +1,8 @@
-#include "extension.h"
+#include <stdexcept>
+#include <msp/gl/extensions/arb_multitexture.h>
+#include <msp/gl/extensions/arb_vertex_shader.h>
 #include "gl.h"
 #include "texunit.h"
-#include "version_1_3.h"
 
 using namespace std;
 
@@ -14,7 +15,9 @@ TexUnit *TexUnit::cur_unit = 0;
 TexUnit::TexUnit():
 	texture(0),
 	texenv(0)
-{ }
+{
+	fill(texgen, texgen+4, static_cast<const TexGen *>(0));
+}
 
 bool TexUnit::set_texture(const Texture *tex)
 {
@@ -30,14 +33,30 @@ bool TexUnit::set_texenv(const TexEnv *env)
 	return result;
 }
 
+bool TexUnit::set_texgen(unsigned i, const TexGen *gen)
+{
+	if(i>=4)
+		throw out_of_range("TexUnit::set_texgen");
+	bool result = (texgen[i]!=gen);
+	texgen[i] = gen;
+	return result;
+}
+
+const TexGen *TexUnit::get_texgen(unsigned i)
+{
+	if(i>=4)
+		throw out_of_range("TexUnit::get_texgen");
+	return texgen[i];
+}
+
 unsigned TexUnit::get_n_units()
 {
 	static int count = -1;
 	if(count<0)
 	{
-		if(is_version_at_least(2, 0) || is_supported("ARB_vertex_shader"))
+		if(ARB_vertex_shader)
 			glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &count);
-		else if(is_version_at_least(1, 3))
+		else if(ARB_multitexture)
 			glGetIntegerv(GL_MAX_TEXTURE_UNITS, &count);
 		else
 			count = 1;
@@ -47,8 +66,10 @@ unsigned TexUnit::get_n_units()
 
 TexUnit &TexUnit::activate(unsigned n)
 {
+	if(n>0)
+		static Require _req(ARB_multitexture);
 	if(n>=get_n_units())
-		throw InvalidParameterValue("Invalid texture unit number");
+		throw out_of_range("TexUnit::activate");
 
 	if(units.size()<=n)
 		units.resize(n+1);