better low qual mode

[carveJwlIkooP6JGAAIwe30JlM.git] / shaders / terrain.h

diff --git a/shaders/terrain.h b/shaders/terrain.h
index 063566282c27bb944818e249f5e1df702f784954..24eb0ea61bc89fae77af80ebf0ef2ec878e2a8e8 100644 (file)
--- a/shaders/terrain.h
+++ b/shaders/terrain.h
@@ -18,8 +18,8 @@ static struct vg_shader _shader_terrain = {
 "\n"
 "#line      2        0 \n"
 "\n"
-"uniform mat4 uPv;\n"
 "uniform mat4x3 uMdl;\n"
+"uniform mat4 uPv;\n"
 "\n"
 "out vec4 aColour;\n"
 "out vec2 aUv;\n"
@@ -47,6 +47,8 @@ static struct vg_shader _shader_terrain = {
 "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 +68,7 @@ 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 +133,11 @@ 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 +160,7 @@ 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 +182,9 @@ 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"
@@ -200,18 +208,20 @@ static struct vg_shader _shader_terrain = {
 ""},
 };
 
-static GLuint _uniform_terrain_uPv;
 static GLuint _uniform_terrain_uMdl;
+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_uPv(m4x4f m){
-   glUniformMatrix4fv( _uniform_terrain_uPv, 1, GL_FALSE, (float *)m );
-}
 static void shader_terrain_uMdl(m4x3f 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 );
+}
 static void shader_terrain_uTexGarbage(int i){
    glUniform1i( _uniform_terrain_uTexGarbage, i );
 }
@@ -221,6 +231,12 @@ static void shader_terrain_uTexGradients(int i){
 static void shader_terrain_uCamera(v3f 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 );
 }
@@ -229,11 +245,13 @@ static void shader_terrain_register(void){
 }
 static void shader_terrain_use(void){ glUseProgram(_shader_terrain.id); }
 static void shader_terrain_link(void){
-   _uniform_terrain_uPv = glGetUniformLocation( _shader_terrain.id, "uPv" );
    _uniform_terrain_uMdl = glGetUniformLocation( _shader_terrain.id, "uMdl" );
+   _uniform_terrain_uPv = glGetUniformLocation( _shader_terrain.id, "uPv" );
    _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 */