X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=shaders%2Fscoretext.h;h=fea61cc0a68631d47539ae05e13432949c47c263;hb=65de5fb65850b8eb282455d15ca7466b656c1ef8;hp=fae077e81e93a83fe452c0ca20dab88c0725240e;hpb=3d8eaabcfd3b87fb52127eaa1241673e8d197bea;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/shaders/scoretext.h b/shaders/scoretext.h
index fae077e..fea61cc 100644
--- a/shaders/scoretext.h
+++ b/shaders/scoretext.h
@@ -16,9 +16,29 @@ static struct vg_shader _shader_scoretext = {
 "layout (location=5) in ivec4 a_groups;\n"
 "\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"
+"\n"
+"#line      3        0 \n"
 "\n"
-"uniform mat4 uPv;\n"
 "uniform mat4x3 uMdl;\n"
+"uniform mat4 uPv;\n"
+"uniform mat4 uPvmPrev;\n"
 "\n"
 "uniform vec3 uInfo;\n"
 "\n"
@@ -47,8 +67,16 @@ static struct vg_shader _shader_scoretext = {
 "   mlocal[2] = vec3(0.0,0.0,1.0);\n"
 "   mlocal[3] = vec3(c*r,uInfo.y*0.875 + s*r,uInfo.x*0.5);\n"
 "\n"
-"   vec3 world_pos = uMdl * vec4(mlocal * vec4(a_co,1.0),1.0);\n"
-"   gl_Position = uPv * vec4( world_pos, 1.0 );\n"
+"   vec3 local_pos = mlocal * vec4( a_co, 1.0 );\n"
+"   vec3 world_pos = uMdl * vec4( local_pos, 1.0 );\n"
+"\n"
+"   vec4 vproj0 = uPv      * vec4( world_pos, 1.0 );\n"
+"   vec4 vproj1 = uPvmPrev * vec4( local_pos, 1.0 );\n"
+"\n"
+"   // Output\n"
+"   vs_motion_out( vproj0, vproj1 );\n"
+"\n"
+"   gl_Position = vproj0;\n"
 "   aColour = a_colour;\n"
 "   aUv = a_uv + vec2( floor(uInfo.z+0.5)*(1.0/64.0), yoff );\n"
 "   aNorm = mat3(uMdl) * mat3(mlocal) * a_norm;\n"
@@ -59,8 +87,6 @@ static struct vg_shader _shader_scoretext = {
    .fs = 
 {
 .static_src = 
-"out vec4 FragColor;\n"
-"\n"
 "uniform sampler2D uTexGarbage;\n"
 "uniform sampler2D uTexGradients;\n"
 "uniform vec3 uCamera;\n"
@@ -72,6 +98,8 @@ static struct vg_shader _shader_scoretext = {
 "in vec3 aWorldCo;\n"
 "\n"
 "#line       1        1 \n"
+"layout (location = 0) out vec4 oColour;\n"
+"\n"
 "layout (std140) uniform ub_world_lighting\n"
 "{\n"
 "   vec4 g_light_colours[3];\n"
@@ -175,10 +203,32 @@ static struct vg_shader _shader_scoretext = {
 "   return mix( vfrag, vec3(0.55,0.76,1.0), min( 1.0, dist ) );\n"
 "}\n"
 "\n"
-"#line     14        0 \n"
+"#line     12        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"
+"in vec3 aMotionVec1;\n"
+"\n"
+"void compute_motion_vectors()\n"
+"{\n"
+"   // Write motion vectors\n"
+"   vec2 vmotion0 = aMotionVec0.xy / aMotionVec0.z;\n"
+"   vec2 vmotion1 = aMotionVec1.xy / aMotionVec1.z;\n"
+"\n"
+"   oMotionVec = (vmotion1-vmotion0) * (1.0/k_motion_lerp_amount);\n"
+"}\n"
+"\n"
+"#line     13        0 \n"
 "\n"
 "void main()\n"
 "{\n"
+"   compute_motion_vectors();\n"
+"\n"
 "   vec3 vfrag = vec3(0.5,0.5,0.5);\n"
 "\n"
 "   // ws modulation\n"
@@ -217,23 +267,27 @@ static struct vg_shader _shader_scoretext = {
 "   vfrag = do_light_shadowing( vfrag );\n"
 "   vfrag = apply_fog( vfrag, fdist );\n"
 "\n"
-"   FragColor = vec4(vfrag, 1.0 );\n"
+"   oColour = vec4(vfrag, 1.0 );\n"
 "}\n"
 ""},
 };
 
-static GLuint _uniform_scoretext_uPv;
 static GLuint _uniform_scoretext_uMdl;
+static GLuint _uniform_scoretext_uPv;
+static GLuint _uniform_scoretext_uPvmPrev;
 static GLuint _uniform_scoretext_uInfo;
 static GLuint _uniform_scoretext_uTexGarbage;
 static GLuint _uniform_scoretext_uTexGradients;
 static GLuint _uniform_scoretext_uCamera;
 static GLuint _uniform_scoretext_g_world_depth;
+static void shader_scoretext_uMdl(m4x3f m){
+   glUniformMatrix4x3fv(_uniform_scoretext_uMdl,1,GL_FALSE,(float*)m);
+}
 static void shader_scoretext_uPv(m4x4f m){
    glUniformMatrix4fv(_uniform_scoretext_uPv,1,GL_FALSE,(float*)m);
 }
-static void shader_scoretext_uMdl(m4x3f m){
-   glUniformMatrix4x3fv(_uniform_scoretext_uMdl,1,GL_FALSE,(float*)m);
+static void shader_scoretext_uPvmPrev(m4x4f m){
+   glUniformMatrix4fv(_uniform_scoretext_uPvmPrev,1,GL_FALSE,(float*)m);
 }
 static void shader_scoretext_uInfo(v3f v){
    glUniform3fv(_uniform_scoretext_uInfo,1,v);
@@ -255,8 +309,9 @@ static void shader_scoretext_register(void){
 }
 static void shader_scoretext_use(void){ glUseProgram(_shader_scoretext.id); }
 static void shader_scoretext_link(void){
-   _uniform_scoretext_uPv = glGetUniformLocation( _shader_scoretext.id, "uPv" );
    _uniform_scoretext_uMdl = glGetUniformLocation( _shader_scoretext.id, "uMdl" );
+   _uniform_scoretext_uPv = glGetUniformLocation( _shader_scoretext.id, "uPv" );
+   _uniform_scoretext_uPvmPrev = glGetUniformLocation( _shader_scoretext.id, "uPvmPrev" );
    _uniform_scoretext_uInfo = glGetUniformLocation( _shader_scoretext.id, "uInfo" );
    _uniform_scoretext_uTexGarbage = glGetUniformLocation( _shader_scoretext.id, "uTexGarbage" );
    _uniform_scoretext_uTexGradients = glGetUniformLocation( _shader_scoretext.id, "uTexGradients" );