131 lines
3.5 KiB
C++
131 lines
3.5 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):
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renderer(renderer)
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{
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}
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static Color _postProcessFragment(SoftwareRenderer* renderer, 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 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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static void _renderQuad(SoftwareRenderer* 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(v1, v2, v3, v4, _postProcessFragment, NULL);
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}
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typedef struct
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{
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SoftwareRenderer* renderer;
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int i;
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double cx;
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double cz;
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double radius_int;
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double chunk_size;
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double radius_ext;
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} ParallelRasterInfo;
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static int _parallelJobCallback(ParallelQueue*, int, void* data, int stopping)
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{
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ParallelRasterInfo* info = (ParallelRasterInfo*)data;
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if (!stopping)
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{
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_renderQuad(info->renderer, info->cx - info->radius_ext + info->chunk_size * info->i, info->cz - info->radius_ext, info->chunk_size);
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_renderQuad(info->renderer, info->cx + info->radius_int, info->cz - info->radius_ext + info->chunk_size * info->i, info->chunk_size);
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_renderQuad(info->renderer, info->cx + info->radius_int - info->chunk_size * info->i, info->cz + info->radius_int, info->chunk_size);
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_renderQuad(info->renderer, info->cx - info->radius_ext, info->cz + info->radius_int - info->chunk_size * info->i, info->chunk_size);
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}
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free(data);
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return 0;
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}
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void WaterRasterizer::renderSurface()
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{
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ParallelRasterInfo* info;
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ParallelQueue* queue;
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queue = new ParallelQueue();
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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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info = new ParallelRasterInfo;
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info->renderer = renderer;
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info->cx = cx;
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info->cz = cz;
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info->i = i;
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info->radius_int = radius_int;
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info->radius_ext = radius_ext;
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info->chunk_size = chunk_size;
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if (!queue->addJob(_parallelJobCallback, info))
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{
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delete info;
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}
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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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queue->wait();
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delete queue;
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}
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