X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flight.cpp;h=a3b3d014c0a51a16762c7a82285f4a6a8960247c;hb=5c5d094255ae5b0a07f99392a5a099ad9c8e8e38;hp=b523fe365124e9c8f52cba0bd4c9edbbaa8e2f07;hpb=41339bc44d076569c680b2c24c75b30ef1254c1b;p=libs%2Fgl.git

diff --git a/source/light.cpp b/source/light.cpp
index b523fe36..a3b3d014 100644
--- a/source/light.cpp
+++ b/source/light.cpp
@@ -1,13 +1,11 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include "except.h"
+#include <stdexcept>
+#include <msp/gl/extensions/msp_legacy_features.h>
+#include <msp/strings/format.h>
 #include "light.h"
+#include "lightunit.h"
+#include "matrix.h"
 #include "misc.h"
+#include "programdata.h"
 
 using namespace std;
 
@@ -15,7 +13,6 @@ namespace Msp {
 namespace GL {
 
 Light::Light():
-	ambient(0),
 	diffuse(1),
 	specular(1),
 	position(0, 0, 1, 0),
@@ -23,103 +20,124 @@ Light::Light():
 	spot_exp(0),
 	spot_cutoff(180)
 {
-	attenuation[0]=1;
-	attenuation[1]=0;
-	attenuation[2]=0;
+	attenuation[0] = 1;
+	attenuation[1] = 0;
+	attenuation[2] = 0;
+}
+
+Light::~Light()
+{
+	while(LightUnit *unit = LightUnit::find_unit(this))
+		unbind_from(unit->get_index());
 }
 
-void Light::set_ambient(const Color &c)
+void Light::update_parameter(int mask, int index) const
 {
-	ambient=c;
+	if(index<0)
+	{
+		LightUnit *unit = LightUnit::find_unit(this);
+		if(!unit)
+			return;
+
+		index = unit->get_index();
+	}
+
+	GLenum l = GL_LIGHT0+index;
+	if(mask&DIFFUSE)
+		glLightfv(l, GL_DIFFUSE, &diffuse.r);
+	if(mask&SPECULAR)
+		glLightfv(l, GL_SPECULAR, &specular.r);
+	if(mask&POSITION)
+		glLightfv(l, GL_POSITION, &position.x);
+	if(mask&SPOT_DIR)
+		glLightfv(l, GL_SPOT_DIRECTION, &spot_dir.x);
+	if(mask&SPOT_EXP)
+		glLightf(l, GL_SPOT_EXPONENT, spot_exp);
+	if(mask&SPOT_CUTOFF)
+		glLightf(l, GL_SPOT_CUTOFF, spot_cutoff);
+	if(mask&ATTENUATION)
+	{
+		glLightf(l, GL_CONSTANT_ATTENUATION, attenuation[0]);
+		glLightf(l, GL_LINEAR_ATTENUATION, attenuation[1]);
+		glLightf(l, GL_QUADRATIC_ATTENUATION, attenuation[2]);
+	}
 }
 
 void Light::set_diffuse(const Color &c)
 {
-	diffuse=c;
+	diffuse = c;
+	update_parameter(DIFFUSE);
 }
 
 void Light::set_specular(const Color &c)
 {
-	specular=c;
+	specular = c;
+	update_parameter(SPECULAR);
 }
 
 void Light::set_position(const Vector4 &p)
 {
-	position=p;
+	position = p;
+	update_parameter(POSITION);
 }
 
 void Light::set_spot_direction(const Vector3 &d)
 {
-	spot_dir=d;
+	spot_dir = d;
+	update_parameter(SPOT_DIR);
 }
 
 void Light::set_spot_exponent(float e)
 {
-	spot_exp=e;
+	spot_exp = e;
+	update_parameter(SPOT_EXP);
 }
 
 void Light::set_spot_cutoff(float c)
 {
-	spot_cutoff=c;
+	spot_cutoff = c;
+	update_parameter(SPOT_CUTOFF);
 }
 
 void Light::set_attenuation(float c, float l, float q)
 {
-	attenuation[0]=c;
-	attenuation[1]=l;
-	attenuation[2]=q;
+	attenuation[0] = c;
+	attenuation[1] = l;
+	attenuation[2] = q;
+	update_parameter(ATTENUATION);
 }
 
-void Light::bind() const
+void Light::update_shader_data(ProgramData &shdata, const Matrix &view_matrix, unsigned i) const
 {
-	if(current_lights[current_unit]!=this)
-	{
-		GLenum l=GL_LIGHT0+current_unit;
-		enable(l);
-		glLightfv(l, GL_AMBIENT, &ambient.r);
-		glLightfv(l, GL_DIFFUSE, &diffuse.r);
-		glLightfv(l, GL_SPECULAR, &specular.r);
-		glLightfv(l, GL_POSITION, &position.x);
-		glLightfv(l, GL_SPOT_DIRECTION, &spot_dir.x);
-		glLightf(l, GL_SPOT_EXPONENT, spot_exp);
-		glLightf(l, GL_SPOT_CUTOFF, spot_cutoff);
-		glLightf(l, GL_CONSTANT_ATTENUATION, attenuation[0]);
-		glLightf(l, GL_LINEAR_ATTENUATION, attenuation[1]);
-		glLightf(l, GL_QUADRATIC_ATTENUATION, attenuation[2]);
-		current_lights[current_unit]=this;
-	}
+	string base = format("light_sources[%d]", i);
+	shdata.uniform(base+".position", view_matrix*position);
+	shdata.uniform(base+".diffuse", diffuse);
+	shdata.uniform(base+".specular", specular);
 }
 
 void Light::bind_to(unsigned i) const
 {
-	activate(i);
-	bind();
+	static Require _req(MSP_legacy_features);
+
+	LightUnit &unit = LightUnit::get_unit(i);
+	if(unit.set_light(this))
+	{
+		enable(GL_LIGHT0+unit.get_index());
+		update_parameter(-1, unit.get_index());
+	}
 }
 
-void Light::activate(unsigned i)
+const Light *Light::current(unsigned i)
 {
-	static unsigned max_lights=get_i(GL_MAX_LIGHTS);
-
-	if(i>=max_lights)
-		throw InvalidParameterValue("Light unit index out of range");
-
-	if(i>=current_lights.size())
-		current_lights.resize(i+1);
-
-	current_unit=i;
+	return LightUnit::get_unit(i).get_light();
 }
 
-void Light::unbind()
+void Light::unbind_from(unsigned i)
 {
-	if(current_lights[current_unit])
-	{
-		disable(GL_LIGHT0+current_unit);
-		current_lights[current_unit]=0;
-	}
+	LightUnit &unit = LightUnit::get_unit(i);
+	if(unit.set_light(0))
+		disable(GL_LIGHT0+unit.get_index());
 }
 
-unsigned Light::current_unit=0;
-vector<const Light *> Light::current_lights(1);
-
 } // namespace GL
 } // namespace Msp