This method force rendering the scene three times and once the water. In the end all of textures are mixing in fragment shader and creating realistic calm water. For reflections we are rendering scene above the water and for the refraction all what is bellow the water. The refraction are creating in the same way but the clip distance is different for each step but camera must be above the water level. This method allow us to save actual scene to the texture instead straight to the screen something like post processing but we pass that to the water surface not to the screen space. The reflection on the water are created by bind the custom framebuffer and render the scene, but before we have to set the camer under the water.
Water include reflections and refraction for good visual effect. Star vs Evil Avatar Maker Equestria Girls Avatar Maker Crystal Gem Pearl Dress Up Game Mabel Dress Up Game Crystal Gem Garnet Dress Up Crystal Gem Rose Quartz Dress U.
Halloween Doll Creator Doll Creator Halloween Theme. The water is using dudv map for realistic movement the water and normalmap to calculate light. Doll Creator Fashion Looks Doll Creator Spring Trends. Water is a simple plane without tessellation. Answer is short: tessellation is also in use in this project. So if we're farther from the surface it will be rendered faster. Distance between surface and camera can be used for evaluation the LOD. With Tessellation it is easy to create terrain with dynamic level of detail. OpenGL 4.0 provide us tesselation feature. Heightmap is used to increase y-axis in tesselation evaluation shader and normalmap is used to calculate the normal of surface to make proper light. We can pass textures to shaders and use as samplers. And again we have to pass normalmap to graphic card memory as 2D texure. CPU do that faster and once, so for me better. By the way it is easy to generated normal in shaders but that is expensive for efficient of our gpu. That process is achieved by using Sobel Operator and normalize texture data. The same data which we generate is used for convert heightmap to normalmap.
TESSELLATION MAKER GENERATOR
Procedural-Terrain-Generator-OpenGL Procedural Terrain Generator With Tessellation OpenGL 4.1 | C++įor creating realistic surface I choosed Perlin Noise or simply noise method to generate heightmap.
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