GLSL realizes simple Displace Mapping water Simulation fluid drawing "turn"

Http://blog.csdn.net/a3070173/archive/2008/11/20/3342062.aspx

2. Dislace mapping is actually in the vertex shader.
4. Displacement offsets of vertices are often used for water simulation of fluid rendering.
8. Vertex shader:
10. Uniform float G_fscale;
12. Uniform sampler2d g_displacetexture;
16. void Main ()
18. {
20. float fdisplace = Texture2dlod (g_displacetexture, Gl_multitexcoord0.st, 0.0). R;
22. VEC4 Vec4newvertex = VEC4 (gl_vertex.x, gl_vertex.y + g_fscale*fdisplace, GL_VERTEX.ZW);
26. Gl_texcoord[0] = gl_multitexcoord0;
28. Gl_position = Gl_modelviewprojectionmatrix*vec4newvertex;
30. }
34. Slice shader:
36. Uniform sampler2d g_decaltexture;
40. void Main ()
42. {
44. Gl_fragcolor = Texture2d (g_decaltexture, gl_texcoord[0].st);
46. }
50. Demo Effect:
54. EXE file:http://www.fileupyours.com/view/219112/GLSL/Simple%20Displace%20Mapping.rar
56. VC9 Run Library:http://www.fileupyours.com/view/219112/GLSL/VC9%26%2336816%3B%26%2334892%3B%26%2326102%3B%26% 2324211%3b.rar