83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
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#include "public.h"
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#include "private.h"
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#include <stdlib.h>
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#include "../renderer.h"
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#include "../tools.h"
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static Color _postProcessFragment(Renderer* renderer, Vector3 location, void* data)
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{
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UNUSED(data);
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return renderer->water->getResult(renderer, location.x, location.z).final;
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}
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static Vector3 _getFirstPassVertex(Renderer* renderer, double x, double z)
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{
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Vector3 result;
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result.x = x;
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result.y = renderer->water->getHeight(renderer, x, z);
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result.z = z;
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return result;
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}
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static void _renderQuad(Renderer* renderer, double x, double z, double size)
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{
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Vector3 v1, v2, v3, v4;
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v1 = _getFirstPassVertex(renderer, x, z);
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v2 = _getFirstPassVertex(renderer, x, z + size);
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v3 = _getFirstPassVertex(renderer, x + size, z + size);
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v4 = _getFirstPassVertex(renderer, x + size, z);
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renderer->pushQuad(renderer, v1, v2, v3, v4, _postProcessFragment, NULL);
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}
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void waterRenderSurface(Renderer* renderer)
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{
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int chunk_factor, chunk_count, i;
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Vector3 cam = renderer->getCameraLocation(renderer, VECTOR_ZERO);
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double cx = cam.x;
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double cz = cam.z;
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double radius_int, radius_ext, base_chunk_size, chunk_size;
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base_chunk_size = 2.0 / (double)renderer->render_quality;
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if (renderer->render_quality > 7)
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{
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base_chunk_size *= 0.5;
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}
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chunk_factor = 1;
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chunk_count = 2;
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radius_int = 0.0;
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radius_ext = base_chunk_size;
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chunk_size = base_chunk_size;
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while (radius_int < 5000.0)
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{
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if (!renderer->addRenderProgress(renderer, 0.0))
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{
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return;
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}
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for (i = 0; i < chunk_count - 1; i++)
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{
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_renderQuad(renderer, cx - radius_ext + chunk_size * i, cz - radius_ext, chunk_size);
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_renderQuad(renderer, cx + radius_int, cz - radius_ext + chunk_size * i, chunk_size);
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_renderQuad(renderer, cx + radius_int - chunk_size * i, cz + radius_int, chunk_size);
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_renderQuad(renderer, cx - radius_ext, cz + radius_int - chunk_size * i, chunk_size);
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}
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if (radius_int > 20.0 && chunk_count % 64 == 0 && (double)chunk_factor < radius_int / 20.0)
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{
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chunk_count /= 2;
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chunk_factor *= 2;
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}
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chunk_count += 2;
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chunk_size = base_chunk_size * chunk_factor;
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radius_int = radius_ext;
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radius_ext += chunk_size;
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}
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}
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