X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=shaders%2Fterrain.h;h=6b4c3de695a00f9e25e29cd15b088108cb612a6e;hb=3d8eaabcfd3b87fb52127eaa1241673e8d197bea;hp=5ebef38e970aa36c7488362763fa31013e4d30d5;hpb=15beb60ade240af4e00b0d204f7e89a4d35dca36;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/shaders/terrain.h b/shaders/terrain.h
index 5ebef38..6b4c3de 100644
--- a/shaders/terrain.h
+++ b/shaders/terrain.h
@@ -7,7 +7,6 @@ static struct vg_shader _shader_terrain = {
    .link = shader_terrain_link,
    .vs = 
 {
-.orig_file = "../../shaders/standard.vs",
 .static_src = 
 "layout (location=0) in vec3 a_co;\n"
 "layout (location=1) in vec3 a_norm;\n"
@@ -40,13 +39,14 @@ static struct vg_shader _shader_terrain = {
 ""},
    .fs = 
 {
-.orig_file = "../../shaders/terrain.fs",
 .static_src = 
 "out vec4 FragColor;\n"
 "\n"
 "uniform sampler2D uTexGarbage;\n"
 "uniform sampler2D uTexGradients;\n"
 "uniform vec3 uCamera;\n"
+"uniform vec3 uSandColour;\n"
+"uniform vec2 uBlendOffset;\n"
 "\n"
 "in vec4 aColour;\n"
 "in vec2 aUv;\n"
@@ -66,6 +66,7 @@ static struct vg_shader _shader_terrain = {
 "   float g_water_fog;\n"
 "   int g_light_count;\n"
 "   int g_light_preview;\n"
+"   int g_shadow_samples;\n"
 "};\n"
 "\n"
 "uniform sampler2D g_world_depth;\n"
@@ -130,6 +131,11 @@ static struct vg_shader _shader_terrain = {
 "\n"
 "vec3 do_light_shadowing( vec3 vfrag )\n"
 "{\n"
+"   if( g_shadow_samples == 0 )\n"
+"   {\n"
+"      return vfrag;\n"
+"   }\n"
+"\n"
 "   float fspread = g_light_colours[0].w;\n"
 "   vec3  vdir = g_light_directions[0].xyz;\n"
 "   float flength = g_light_directions[0].w;\n"
@@ -152,7 +158,7 @@ static struct vg_shader _shader_terrain = {
 "   return mix( vfrag, vec3(0.55,0.76,1.0), min( 1.0, dist ) );\n"
 "}\n"
 "\n"
-"#line     14        0 \n"
+"#line     16        0 \n"
 "\n"
 "void main()\n"
 "{\n"
@@ -174,9 +180,9 @@ static struct vg_shader _shader_terrain = {
 "   // Colour blending\n"
 "   float amtgrass = step(qnorm.y,0.6);\n"
 "   float amtsand = min(max((aCo.y - 10.0) * -0.1,0.0)*qnorm.y,1.0);\n"
-"   vec2 uvgradients = aUv + vec2( amtgrass*0.5 + rgarbage.a*0.4, 0.0 );\n"
+"   vec2 uvgradients = aUv + vec2( amtgrass + rgarbage.a*0.8 )*uBlendOffset;\n"
 "   vfrag = texture( uTexGradients, uvgradients ).rgb;\n"
-"   vfrag = mix( vfrag, vec3(1.0,0.9,0.8)*0.9, amtsand );\n"
+"   vfrag = mix( vfrag, uSandColour, amtsand );\n"
 "\n"
 "   qnorm = mix( qnorm, aNorm, amtsand );\n"
 "   \n"
@@ -205,24 +211,32 @@ static GLuint _uniform_terrain_uPv;
 static GLuint _uniform_terrain_uTexGarbage;
 static GLuint _uniform_terrain_uTexGradients;
 static GLuint _uniform_terrain_uCamera;
+static GLuint _uniform_terrain_uSandColour;
+static GLuint _uniform_terrain_uBlendOffset;
 static GLuint _uniform_terrain_g_world_depth;
 static void shader_terrain_uMdl(m4x3f m){
-   glUniformMatrix4x3fv( _uniform_terrain_uMdl, 1, GL_FALSE, (float *)m );
+   glUniformMatrix4x3fv(_uniform_terrain_uMdl,1,GL_FALSE,(float*)m);
 }
 static void shader_terrain_uPv(m4x4f m){
-   glUniformMatrix4fv( _uniform_terrain_uPv, 1, GL_FALSE, (float *)m );
+   glUniformMatrix4fv(_uniform_terrain_uPv,1,GL_FALSE,(float*)m);
 }
 static void shader_terrain_uTexGarbage(int i){
-   glUniform1i( _uniform_terrain_uTexGarbage, i );
+   glUniform1i(_uniform_terrain_uTexGarbage,i);
 }
 static void shader_terrain_uTexGradients(int i){
-   glUniform1i( _uniform_terrain_uTexGradients, i );
+   glUniform1i(_uniform_terrain_uTexGradients,i);
 }
 static void shader_terrain_uCamera(v3f v){
-   glUniform3fv( _uniform_terrain_uCamera, 1, v );
+   glUniform3fv(_uniform_terrain_uCamera,1,v);
+}
+static void shader_terrain_uSandColour(v3f v){
+   glUniform3fv(_uniform_terrain_uSandColour,1,v);
+}
+static void shader_terrain_uBlendOffset(v2f v){
+   glUniform2fv(_uniform_terrain_uBlendOffset,1,v);
 }
 static void shader_terrain_g_world_depth(int i){
-   glUniform1i( _uniform_terrain_g_world_depth, i );
+   glUniform1i(_uniform_terrain_g_world_depth,i);
 }
 static void shader_terrain_register(void){
    vg_shader_register( &_shader_terrain );
@@ -234,6 +248,8 @@ static void shader_terrain_link(void){
    _uniform_terrain_uTexGarbage = glGetUniformLocation( _shader_terrain.id, "uTexGarbage" );
    _uniform_terrain_uTexGradients = glGetUniformLocation( _shader_terrain.id, "uTexGradients" );
    _uniform_terrain_uCamera = glGetUniformLocation( _shader_terrain.id, "uCamera" );
+   _uniform_terrain_uSandColour = glGetUniformLocation( _shader_terrain.id, "uSandColour" );
+   _uniform_terrain_uBlendOffset = glGetUniformLocation( _shader_terrain.id, "uBlendOffset" );
    _uniform_terrain_g_world_depth = glGetUniformLocation( _shader_terrain.id, "g_world_depth" );
 }
 #endif /* SHADER_terrain_H */