87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
#include "WaterRasterizer.h"
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#include "SoftwareRenderer.h"
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#include "WaterRenderer.h"
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#include "ParallelQueue.h"
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WaterRasterizer::WaterRasterizer(SoftwareRenderer* renderer, int client_id):
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Rasterizer(renderer, client_id)
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{
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}
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static Color _postProcessFragment(SoftwareRenderer* renderer, const Vector3 &location, void*)
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{
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return renderer->getWaterRenderer()->getResult(location.x, location.z).final;
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}
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static inline Vector3 _getFirstPassVertex(SoftwareRenderer* 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->getWaterRenderer()->getHeight(x, z);
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result.z = z;
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return result;
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}
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void WaterRasterizer::rasterizeQuad(CanvasPortion* canvas, 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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pushQuad(canvas, v1, v2, v3, v4);
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}
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void WaterRasterizer::rasterizeToCanvas(CanvasPortion *canvas)
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{
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int chunk_factor, chunk_count, i;
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Vector3 cam = renderer->getCameraLocation(VECTOR_ZERO);
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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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double cx = cam.x - fmod(cam.x, base_chunk_size);
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double cz = cam.z - fmod(cam.x, base_chunk_size);
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while (radius_int < 20000.0)
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{
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if (!renderer->addRenderProgress(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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rasterizeQuad(canvas, cx - radius_ext + chunk_size * i, cz - radius_ext, chunk_size);
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rasterizeQuad(canvas, cx + radius_int, cz - radius_ext + chunk_size * i, chunk_size);
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rasterizeQuad(canvas, cx + radius_int - chunk_size * i, cz + radius_int, chunk_size);
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rasterizeQuad(canvas, 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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