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Tweak to prevent the cloud LOD system from dropping sprites in very faint clouds which have just few sprites to begin with and appear unrealistic when these are dropped

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Thorsten Renk 2013-06-13 13:26:37 +03:00
parent c759a3e57f
commit b9c573ea11
2 changed files with 4 additions and 4 deletions
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4
Shaders/3dcloud-lightfield.vert
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@ -94,7 +94,7 @@ void main(void)
float fogCoord = length(vec3(gl_ModelViewMatrix * vec4(gl_Color.x, gl_Color.y, gl_Color.z, 1.0)));
float center_dist = length(vec3(gl_ModelViewMatrix * vec4(0.0,0.0,0.0,1.0)));
if ((fogCoord > detail_range) && (fogCoord > center_dist)) {
if ((fogCoord > detail_range) && (fogCoord > center_dist) && (shade_factor < 0.7)) {
// More than detail_range away, so discard all sprites on opposite side of
// cloud center by shifting them beyond the view fustrum
gl_Position = vec4(0.0,0.0,10.0,1.0);
@ -176,7 +176,7 @@ void main(void)
//gl_FrontColor.a = 1.0;
//light_diffuse+ gl_FrontLightModelProduct.sceneColor;// * shade ;//+ gl_FrontLightModelProduct.sceneColor;
if ((fogCoord > (0.9 * detail_range)) && (fogCoord > center_dist)) {
if ((fogCoord > (0.9 * detail_range)) && (fogCoord > center_dist) && (shade_factor < 0.7)) {
// cloudlet is almost at the detail range, so fade it out.
gl_FrontColor.a = 1.0 - smoothstep(0.9 * detail_range, detail_range, fogCoord);
} else {

4
Shaders/3dcloud.vert
View file

@ -44,7 +44,7 @@ void main(void)
float fogCoord = length(vec3(gl_ModelViewMatrix * vec4(gl_Color.x, gl_Color.y, gl_Color.z, 1.0)));
float center_dist = length(vec3(gl_ModelViewMatrix * vec4(0.0,0.0,0.0,1.0)));
if ((fogCoord > detail_range) && (fogCoord > center_dist)) {
if ((fogCoord > detail_range) && (fogCoord > center_dist) && (shade_factor < 0.7)) {
// More than detail_range away, so discard all sprites on opposite side of
// cloud center by shifting them beyond the view fustrum
gl_Position = vec4(0.0,0.0,10.0,1.0);
@ -72,7 +72,7 @@ void main(void)
gl_Position = gl_ModelViewProjectionMatrix * gl_Position;
gl_FrontColor = gl_LightSource[0].diffuse * shade + gl_FrontLightModelProduct.sceneColor;
if ((fogCoord > (0.9 * detail_range)) && (fogCoord > center_dist)) {
if ((fogCoord > (0.9 * detail_range)) && (fogCoord > center_dist) && (shade_factor < 0.7)) {
// cloudlet is almost at the detail range, so fade it out.
gl_FrontColor.a = 1.0 - smoothstep(0.9 * detail_range, detail_range, fogCoord);
} else {