X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=shaders%2Falphatest.h;h=25e58795ec18da791c1124970eaca74933978860;hb=65de5fb65850b8eb282455d15ca7466b656c1ef8;hp=d5c38d0a7755fc2d8f2e82d0fa091e4261e91c95;hpb=f7db507815e2822d971031c30f25e02b45e9c914;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/shaders/alphatest.h b/shaders/alphatest.h
index d5c38d0..25e5879 100644
--- a/shaders/alphatest.h
+++ b/shaders/alphatest.h
@@ -17,11 +17,19 @@ static struct vg_shader _shader_alphatest = {
 "\n"
 "#line      2        0 \n"
 "#line       1        2 \n"
+"const float k_motion_lerp_amount = 0.01;\n"
+"\n"
+"#line      2        0 \n"
+"\n"
 "out vec3 aMotionVec0;\n"
 "out vec3 aMotionVec1;\n"
 "\n"
 "void vs_motion_out( vec4 vproj0, vec4 vproj1 )\n"
 "{\n"
+"   // This magically solves some artifacting errors!\n"
+"   //\n"
+"   vproj1 = vproj0*(1.0-k_motion_lerp_amount) + vproj1*k_motion_lerp_amount;\n"
+"\n"
 "   aMotionVec0 = vec3( vproj0.xy, vproj0.w );\n"
 "   aMotionVec1 = vec3( vproj1.xy, vproj1.w );\n"
 "}\n"
@@ -176,6 +184,10 @@ static struct vg_shader _shader_alphatest = {
 "\n"
 "#line     13        0 \n"
 "#line       1        2 \n"
+"const float k_motion_lerp_amount = 0.01;\n"
+"\n"
+"#line      2        0 \n"
+"\n"
 "layout (location = 1) out vec2 oMotionVec;\n"
 "\n"
 "in vec3 aMotionVec0;\n"
@@ -186,7 +198,8 @@ static struct vg_shader _shader_alphatest = {
 "   // Write motion vectors\n"
 "   vec2 vmotion0 = aMotionVec0.xy / aMotionVec0.z;\n"
 "   vec2 vmotion1 = aMotionVec1.xy / aMotionVec1.z;\n"
-"   oMotionVec = vmotion1-vmotion0;\n"
+"\n"
+"   oMotionVec = (vmotion1-vmotion0) * (1.0/k_motion_lerp_amount);\n"
 "}\n"
 "\n"
 "#line     14        0 \n"