xiaoyan159/vtm
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

shader experiments

Browse Source
This commit is contained in:
Hannes Janetzek
2012-06-21 01:59:21 +02:00
parent 79cc76bd62
commit b4f5d9fb19
1 changed files with 16 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/org/mapsforge/android/glrenderer/Shaders.java
View File

@@ -30,20 +30,29 @@ class Shaders {
final static String gLineFragmentShader = "" final static String gLineFragmentShader = ""
+ "#extension GL_OES_standard_derivatives : enable\n" + "#extension GL_OES_standard_derivatives : enable\n"
+ "#pragma profilepragma blendoperation(gl_FragColor, GL_FUNC_ADD, GL_ONE, GL_ONE_MINUS_SRC_ALPHA)\n"
+ "precision mediump float;" + "precision mediump float;"
+ "uniform vec2 u_mode;" + "uniform vec2 u_mode;"
+ "uniform vec4 u_color;" + "uniform vec4 u_color;"
+ "const float zero = 0.0;" + "const float zero = 0.0;"
+ "const vec4 blank = vec4(0.0,0.0,0.0,0.0);"
+ "varying vec2 v_st;" + "varying vec2 v_st;"
+ "void main() {" + "void main() {"
+ "float width = u_mode[1];" + "float width = u_mode[1];"
// + " if (v_st.t == zero){ " + " if (v_st.t == zero){ "
// + " float fuzz = fwidth(v_st.s) * 1.5;" + " float fuzz = fwidth(v_st.s) * 1.5;"
// + " gl_FragColor = u_color * smoothstep(-fuzz * u_mode[0], fuzz, width - abs(v_st.s));" + " float min_fuzz = -fuzz * u_mode[0];"
// + " } else {" + " float len = width - abs(v_st.s);"
// + " if (len > fuzz)"
// + " gl_FragColor = u_color;"
// + " else if (len < min_fuzz)"
// + " gl_FragColor = blank;"
// + " else"
+ " gl_FragColor = u_color * smoothstep(min_fuzz, fuzz, len);"
+ " } else {"
+ " float fuzz = max(fwidth(v_st.s), fwidth(v_st.t)) * 1.5;" + " float fuzz = max(fwidth(v_st.s), fwidth(v_st.t)) * 1.5;"
+ " gl_FragColor = u_color * smoothstep(-fuzz * u_mode[0], fuzz, width - length(v_st));" + " gl_FragColor = u_color * smoothstep(-fuzz * u_mode[0], fuzz, width - length(v_st));"
// + " } " + " } "
+ "}"; + "}";
// final static String gLineFragmentShader = "" // final static String gLineFragmentShader = ""
@@ -88,11 +97,10 @@ class Shaders {
// + " gl_FragColor = u_color * smoothstep(fuzz*0.5, -fuzz, abs(v_st.s) - width);" // + " gl_FragColor = u_color * smoothstep(fuzz*0.5, -fuzz, abs(v_st.s) - width);"
// + " }" // + " }"
// + "}"; // + "}";
//
// final static String gLineFragmentShader = "" + // final static String gLineFragmentShader = "" +
// "#extension GL_OES_standard_derivatives : enable\n" + // "#extension GL_OES_standard_derivatives : enable\n" +
// "precision mediump float;" + // "precision mediump float;" +
// "uniform float u_width;" +
// "uniform int u_mode;" + // "uniform int u_mode;" +
// "uniform vec4 u_color;" + // "uniform vec4 u_color;" +
// "varying vec2 v_st;" + // "varying vec2 v_st;" +
@@ -127,6 +135,7 @@ class Shaders {
+ "}"; + "}";
final static String gPolygonFragmentShader = "" final static String gPolygonFragmentShader = ""
+ "#pragma profilepragma blendoperation(gl_FragColor, GL_FUNC_ADD, GL_ONE, GL_ONE_MINUS_SRC_ALPHA)\n"
+ "precision mediump float;" + "precision mediump float;"
+ "uniform vec4 u_color;" + "uniform vec4 u_color;"
+ "void main() {" + "void main() {"