X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flight.cpp;h=a3b3d014c0a51a16762c7a82285f4a6a8960247c;hb=4fe225bf15048fcb7a678370f87d09f2de37031a;hp=f9b45c87bfeac3bf5712dec6001fe29f7419d1f6;hpb=48b1ab4fff00c49cc15d70a354eedb3d7a2f3e87;p=libs%2Fgl.git

diff --git a/source/light.cpp b/source/light.cpp
index f9b45c87..a3b3d014 100644
--- a/source/light.cpp
+++ b/source/light.cpp
@@ -1,7 +1,11 @@
 #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;
 
@@ -21,34 +25,78 @@ Light::Light():
 	attenuation[2] = 0;
 }
 
+Light::~Light()
+{
+	while(LightUnit *unit = LightUnit::find_unit(this))
+		unbind_from(unit->get_index());
+}
+
+void Light::update_parameter(int mask, int index) const
+{
+	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;
+	update_parameter(DIFFUSE);
 }
 
 void Light::set_specular(const Color &c)
 {
 	specular = c;
+	update_parameter(SPECULAR);
 }
 
 void Light::set_position(const Vector4 &p)
 {
 	position = p;
+	update_parameter(POSITION);
 }
 
 void Light::set_spot_direction(const Vector3 &d)
 {
 	spot_dir = d;
+	update_parameter(SPOT_DIR);
 }
 
 void Light::set_spot_exponent(float e)
 {
 	spot_exp = e;
+	update_parameter(SPOT_EXP);
 }
 
 void Light::set_spot_cutoff(float c)
 {
 	spot_cutoff = c;
+	update_parameter(SPOT_CUTOFF);
 }
 
 void Light::set_attenuation(float c, float l, float q)
@@ -56,24 +104,26 @@ void Light::set_attenuation(float c, float l, float q)
 	attenuation[0] = c;
 	attenuation[1] = l;
 	attenuation[2] = q;
+	update_parameter(ATTENUATION);
+}
+
+void Light::update_shader_data(ProgramData &shdata, const Matrix &view_matrix, unsigned i) const
+{
+	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
 {
+	static Require _req(MSP_legacy_features);
+
 	LightUnit &unit = LightUnit::get_unit(i);
 	if(unit.set_light(this))
 	{
-		GLenum l = GL_LIGHT0+unit.get_index();
-		enable(l);
-		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]);
+		enable(GL_LIGHT0+unit.get_index());
+		update_parameter(-1, unit.get_index());
 	}
 }