[Hgengine-cvs] SF.net SVN: hgengine:[629] Mercury2/Themes/default/Graphic

[<axl...@us...>]

Revision: 629
          http://hgengine.svn.sourceforge.net/hgengine/?rev=629&view=rev
Author:   axlecrusher
Date:     2009-12-14 22:00:23 +0000 (Mon, 14 Dec 2009)

Log Message:
-----------
fire shader

Added Paths:
-----------
    Mercury2/Themes/default/Graphic/FireParticles.frag
    Mercury2/Themes/default/Graphic/FireParticles.vert

Added: Mercury2/Themes/default/Graphic/FireParticles.frag
===================================================================
--- Mercury2/Themes/default/Graphic/FireParticles.frag	                        (rev 0)
+++ Mercury2/Themes/default/Graphic/FireParticles.frag	2009-12-14 22:00:23 UTC (rev 629)
@@ -0,0 +1,22 @@
+uniform vec4 HG_ParticleTime;
+uniform sampler2D HG_Texture0;
+
+void main()
+{
+	float pComplete = (HG_ParticleTime.x/HG_ParticleTime.y);
+
+	vec4 blue = vec4(0,0,1,0.125);
+	vec4 orange = vec4(1,0.917647059,0.11372549,1);
+	vec4 color = vec4(0,0,0,0);
+	
+	//blues
+	color += blue*(1.0-(pComplete*5.0))*float(pComplete<0.2); //blue
+	color += 1.25*orange*(pComplete*5.0)*float(pComplete<0.2); //orange
+
+	//orange to black fade
+	color += 1.25*orange*(1.0-(pComplete-0.2))*float(pComplete>0.2); //orange
+	color += vec4(-1,-1,-1,1)*(pComplete)*float(pComplete>0.2); //smoke -1 offset
+
+	gl_FragData[0] = texture2D(HG_Texture0, gl_TexCoord[0].st)*color;
+	gl_FragData[0].a *= 1.0-(HG_ParticleTime.x/HG_ParticleTime.y);
+}

Added: Mercury2/Themes/default/Graphic/FireParticles.vert
===================================================================
--- Mercury2/Themes/default/Graphic/FireParticles.vert	                        (rev 0)
+++ Mercury2/Themes/default/Graphic/FireParticles.vert	2009-12-14 22:00:23 UTC (rev 629)
@@ -0,0 +1,61 @@
+uniform vec4 HG_ParticleTime;
+uniform vec4 HG_EyePos;
+uniform vec4 HG_LookVector;
+uniform mat4 HG_ModelMatrix;
+uniform mat4 HG_WorldMatrix;
+uniform mat4 HG_ViewMatrix;
+varying vec3 angleC;
+
+mat4 glRotate(float angle, vec3 axis)
+{
+	axis=normalize(axis);
+	mat4 m = mat4(0);
+	float c = cos(angle);
+	float s = sin(angle);
+	float nc = 1.0-c;
+
+	m[0][0] = (axis.x*axis.x*nc)+c;
+	m[0][1] = (axis.x*axis.y*nc)-(axis.z*s);
+	m[0][2] = (axis.x*axis.z*nc)+(axis.y*s);
+
+	m[1][0] = (axis.y*axis.x*nc)+(axis.z*s);
+	m[1][1] = (axis.y*axis.y*nc)+c;
+	m[1][2] = (axis.y*axis.z*nc)-(axis.x*s);
+
+	m[2][0] = (axis.x*axis.z*nc)-(axis.y*s);
+	m[2][1] = (axis.y*axis.z*nc)+(axis.x*s);
+	m[2][2] = (axis.z*axis.z*nc)+c;
+
+	m[3][3] = 1.0;
+
+	return m;
+}
+
+mat4 Billboard(vec3 pos)
+{
+	vec3 objToEye = (HG_EyePos - HG_ModelMatrix*vec4(pos,1)).xyz;
+//	objToEye.y = 0.0;
+
+	vec3 objLookAt = normalize((HG_ModelMatrix * vec4(0,0,-1,0)).xyz);
+	objToEye = normalize(objToEye);
+
+	vec3 up = cross(objLookAt, objToEye);
+	float angleCos = dot(objLookAt, objToEye);
+
+	return glRotate(-acos(angleCos), up);
+}
+
+void main()
+{
+	vec4 pos = vec4(1.0);
+	pos.y = 0.30*(HG_ParticleTime.x*HG_ParticleTime.x);
+	pos.x = 0.40*((HG_ParticleTime.z-50000.0)/50000.0)*HG_ParticleTime.x; //rand num
+	pos.z = 0.40*((HG_ParticleTime.w-50000.0)/50000.0)*HG_ParticleTime.x; //rand num
+
+	mat4 m = Billboard(pos.xyz);
+	m[3].xyz = pos.xyz;
+
+	gl_Position = gl_ProjectionMatrix *HG_ViewMatrix *HG_ModelMatrix *m* gl_Vertex;
+  
+  	gl_TexCoord[0] = gl_MultiTexCoord0;
+}


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