Added rasterization quality control

src/interface/commandline/tests.cpp

@@ -66,8 +66,24 @@ static void testGroundShadowQuality()
     }
 }
 
+static void testRasterizationQuality()
+{
+    Scenery scenery;
+    scenery.autoPreset(12);
+
+    SoftwareCanvasRenderer renderer(&scenery);
+    renderer.setSize(800, 600);
+    renderer.enablePostprocess(false);
+    for (int i = 0; i < 6; i++)
+    {
+        renderer.setQuality((double)i / 5.0);
+        startTestRender(&renderer, "rasterization_quality", i);
+    }
+}
+
 void runTestSuite()
 {
     testGroundShadowQuality();
+    testRasterizationQuality();
 }
 

src/render/software/Rasterizer.cpp

@@ -38,6 +38,8 @@ Rasterizer::Rasterizer(SoftwareRenderer* renderer, RenderProgress *progress, int
     this->color = new Color(color);
 
     interrupted = false;
+
+    setQuality(0.5);
 }
 
 Rasterizer::~Rasterizer()
@@ -50,6 +52,10 @@ void Rasterizer::interrupt()
     interrupted = true;
 }
 
+void Rasterizer::setQuality(double)
+{
+}
+
 void Rasterizer::pushProjectedTriangle(CanvasPortion *canvas, const Vector3 &pixel1, const Vector3 &pixel2, const Vector3 &pixel3, const Vector3 &location1, const Vector3 &location2, const Vector3 &location3)
 {
     ScanPoint point1, point2, point3;

src/render/software/Rasterizer.h

@@ -23,6 +23,11 @@ public:
     virtual Color shadeFragment(const CanvasFragment &fragment) const = 0;
     virtual void interrupt();
 
+    /**
+     * Set the rasterization quality factor.
+     */
+    virtual void setQuality(double factor);
+
     /**
      * Abstract method to prepare for the rasterization process, and return the estimated progress count.
      */

src/render/software/SkyRasterizer.cpp

@@ -19,9 +19,6 @@ SkyRasterizer::SkyRasterizer(SoftwareRenderer* renderer, RenderProgress *progres
 
 int SkyRasterizer::prepareRasterization()
 {
-    res_i = renderer->render_quality * 40;
-    res_j = renderer->render_quality * 20;
-
     return res_i * res_j;
 }
 
@@ -93,3 +90,14 @@ Color SkyRasterizer::shadeFragment(const CanvasFragment &fragment) const
 
     return result;
 }
+
+void SkyRasterizer::setQuality(int res_i, int res_j)
+{
+    this->res_i = res_i;
+    this->res_j = res_j;
+}
+
+void SkyRasterizer::setQuality(double factor)
+{
+    setQuality(20.0 * (1.0 + factor * 10.0), 10.0 * (1.0 + factor * 10.0));
+}

src/render/software/SkyRasterizer.h

@@ -17,6 +17,9 @@ public:
     virtual void rasterizeToCanvas(CanvasPortion* canvas) override;
     virtual Color shadeFragment(const CanvasFragment &fragment) const override;
 
+    void setQuality(int res_i, int res_j);
+    virtual void setQuality(double factor) override;
+
 private:
     int res_i;
     int res_j;

src/render/software/SoftwareCanvasRenderer.cpp

@@ -25,6 +25,8 @@ SoftwareCanvasRenderer::SoftwareCanvasRenderer(Scenery *scenery):
     progress = new RenderProgress();
     samples = 1;
 
+    postprocess_enabled = true;
+
     rasterizers.push_back(new SkyRasterizer(this, progress, 0));
     rasterizers.push_back(new WaterRasterizer(this, progress, 1));
     rasterizers.push_back(new TerrainRasterizer(this, progress, 2));
@@ -43,6 +45,16 @@ SoftwareCanvasRenderer::~SoftwareCanvasRenderer()
     }
 }
 
+void SoftwareCanvasRenderer::setQuality(double factor)
+{
+    SoftwareRenderer::setQuality(factor);
+
+    for (auto &rasterizer:rasterizers)
+    {
+        rasterizer->setQuality(factor);
+    }
+}
+
 double SoftwareCanvasRenderer::getProgress() const
 {
     return progress->get();
@@ -53,10 +65,15 @@ void SoftwareCanvasRenderer::setConfig(const RenderConfig &config)
     if (not started)
     {
         setSize(config.width, config.height, config.antialias);
-        render_quality = config.quality;
+        setQuality((double)(config.quality - 1) / 9.0);
     }
 }
 
+void SoftwareCanvasRenderer::enablePostprocess(bool enabled)
+{
+    this->postprocess_enabled = enabled;
+}
+
 void SoftwareCanvasRenderer::setSize(int width, int height, int samples)
 {
     if (not started)
@@ -94,7 +111,7 @@ void SoftwareCanvasRenderer::render()
                 rasterize(portion);
             }
 
-            if (not interrupted)
+            if (not interrupted and postprocess_enabled)
             {
                 applyPixelShader(portion);
             }

src/render/software/SoftwareCanvasRenderer.h

@@ -25,6 +25,8 @@ public:
     inline const Canvas *getCanvas() const {return canvas;}
     inline bool isFinished() const {return finished;}
 
+    virtual void setQuality(double factor) override;
+
     /**
      * Get the global rendering progress (0.0-1.0).
      */
@@ -35,6 +37,11 @@ public:
      */
     void setConfig(const RenderConfig &config);
 
+    /**
+     * Enable or disable the post processing.
+     */
+    void enablePostprocess(bool enabled);
+
     /**
      * @brief Set the rendering size in pixels.
      *
@@ -85,6 +92,8 @@ private:
     bool finished;
     bool interrupted;
 
+    bool postprocess_enabled;
+
     ParallelWork *current_work;
 };
 

src/render/software/SoftwareRenderer.cpp

@@ -23,7 +23,6 @@
 SoftwareRenderer::SoftwareRenderer(Scenery* scenery):
     scenery(scenery)
 {
-    render_quality = 5;
     render_camera = new CameraDefinition;
 
     scenery->getCamera()->copy(render_camera);
@@ -42,6 +41,8 @@ SoftwareRenderer::SoftwareRenderer(Scenery* scenery):
     lighting->registerFilter(water_renderer);
     lighting->registerFilter(terrain_renderer);
     lighting->registerFilter(clouds_renderer);
+
+    setQuality(0.5);
 }
 
 SoftwareRenderer::~SoftwareRenderer()

src/render/software/TerrainRasterizer.cpp

@@ -16,6 +16,20 @@ TerrainRasterizer::TerrainRasterizer(SoftwareRenderer* renderer, RenderProgress
 {
 }
 
+void TerrainRasterizer::setQuality(double base_chunk_size, double detail_factor, int max_chunk_detail)
+{
+    this->base_chunk_size = base_chunk_size;
+    this->detail_factor = detail_factor;
+    this->max_chunk_detail = max_chunk_detail;
+}
+
+void TerrainRasterizer::setQuality(double factor)
+{
+    setQuality(5.0 - 4.5 * factor * factor,
+               1.0 / (25.0 - 20.0 * factor),
+               1 + 49 * factor * factor);
+}
+
 static inline Vector3 _getPoint(SoftwareRenderer* renderer, double x, double z)
 {
     return Vector3(x, renderer->getTerrainRenderer()->getHeight(x, z, true), z);
@@ -69,7 +83,7 @@ void TerrainRasterizer::renderQuad(CanvasPortion *canvas, double x, double z, do
     }
 }
 
-static void _getChunk(SoftwareRenderer* renderer, TerrainRasterizer::TerrainChunkInfo* chunk, double x, double z, double size, bool displaced)
+void TerrainRasterizer::getChunk(TerrainRasterizer::TerrainChunkInfo* chunk, double x, double z, double size, bool displaced)
 {
     chunk->point_nw = renderer->getTerrainRenderer()->getResult(x, z, true, displaced).location;
     chunk->point_sw = renderer->getTerrainRenderer()->getResult(x, z + size, true, displaced).location;
@@ -109,10 +123,10 @@ static void _getChunk(SoftwareRenderer* renderer, TerrainRasterizer::TerrainChun
     int coverage = renderer->render_camera->isUnprojectedBoxInView(box);
     if (coverage > 0)
     {
-        chunk->detail_hint = (int)ceil(sqrt((double)coverage) / (double)(25 - 2 * renderer->render_quality));
-        if (chunk->detail_hint > 5 * renderer->render_quality)
+        chunk->detail_hint = (int)ceil(sqrt((double)coverage) * detail_factor);
+        if (chunk->detail_hint > max_chunk_detail)
         {
-            chunk->detail_hint = 5 * renderer->render_quality;
+            chunk->detail_hint = max_chunk_detail;
         }
     }
     else
@@ -128,9 +142,7 @@ int TerrainRasterizer::performTessellation(CanvasPortion* canvas, bool displaced
     int chunk_factor, chunk_count, i, result;
     Vector3 cam = renderer->getCameraLocation(VECTOR_ZERO);
     double radius_int, radius_ext;
-    double base_chunk_size, chunk_size;
-
-    base_chunk_size = 5.0 / (double)renderer->render_quality;
+    double chunk_size;
 
     chunk_factor = 1;
     chunk_count = 2;
@@ -146,7 +158,7 @@ int TerrainRasterizer::performTessellation(CanvasPortion* canvas, bool displaced
     {
         for (i = 0; i < chunk_count - 1; i++)
         {
-            _getChunk(renderer, &chunk, cx - radius_ext + chunk_size * i, cz - radius_ext, chunk_size, displaced);
+            getChunk(&chunk, cx - radius_ext + chunk_size * i, cz - radius_ext, chunk_size, displaced);
             if (chunk.detail_hint > 0)
             {
                 result += chunk.detail_hint * chunk.detail_hint;
@@ -160,7 +172,7 @@ int TerrainRasterizer::performTessellation(CanvasPortion* canvas, bool displaced
                 return result;
             }
 
-            _getChunk(renderer, &chunk, cx + radius_int, cz - radius_ext + chunk_size * i, chunk_size, displaced);
+            getChunk(&chunk, cx + radius_int, cz - radius_ext + chunk_size * i, chunk_size, displaced);
             if (chunk.detail_hint > 0)
             {
                 result += chunk.detail_hint * chunk.detail_hint;
@@ -174,7 +186,7 @@ int TerrainRasterizer::performTessellation(CanvasPortion* canvas, bool displaced
                 return result;
             }
 
-            _getChunk(renderer, &chunk, cx + radius_int - chunk_size * i, cz + radius_int, chunk_size, displaced);
+            getChunk(&chunk, cx + radius_int - chunk_size * i, cz + radius_int, chunk_size, displaced);
             if (chunk.detail_hint > 0)
             {
                 result += chunk.detail_hint * chunk.detail_hint;
@@ -188,7 +200,7 @@ int TerrainRasterizer::performTessellation(CanvasPortion* canvas, bool displaced
                 return result;
             }
 
-            _getChunk(renderer, &chunk, cx - radius_ext, cz + radius_int - chunk_size * i, chunk_size, displaced);
+            getChunk(&chunk, cx - radius_ext, cz + radius_int - chunk_size * i, chunk_size, displaced);
             if (chunk.detail_hint > 0)
             {
                 result += chunk.detail_hint * chunk.detail_hint;

src/render/software/TerrainRasterizer.h

@@ -24,6 +24,16 @@ public:
 public:
     TerrainRasterizer(SoftwareRenderer* renderer, RenderProgress *progress, int client_id);
 
+    /**
+     * Set the rasterization quality.
+     *
+     * @param base_chunk_size Size of chunks near the camera
+     * @param detail_factor Precision factor of a chunk's tessellation, depending on screen coverage
+     * @param max_chunk_detail Maximal tessellation of chunks
+     */
+    void setQuality(double base_chunk_size, double detail_factor, int max_chunk_detail);
+    virtual void setQuality(double factor) override;
+
     virtual int prepareRasterization() override;
     virtual void rasterizeToCanvas(CanvasPortion* canvas) override;
     virtual Color shadeFragment(const CanvasFragment &fragment) const override;
@@ -51,6 +61,14 @@ private:
     void tessellateChunk(CanvasPortion* canvas, TerrainChunkInfo* chunk, int detail);
 
     void renderQuad(CanvasPortion* canvas, double x, double z, double size, double water_height);
+
+    void getChunk(TerrainRasterizer::TerrainChunkInfo* chunk, double x, double z, double size, bool displaced);
+
+private:
+    // Quality control
+    double base_chunk_size;
+    double detail_factor;
+    int max_chunk_detail;
 };
 
 }

src/render/software/WaterRasterizer.cpp

@@ -49,17 +49,20 @@ Color WaterRasterizer::shadeFragment(const CanvasFragment &fragment) const
     return renderer->getWaterRenderer()->getResult(location.x, location.z).final;
 }
 
+void WaterRasterizer::setQuality(double factor)
+{
+    base_chunk_size = 10.0 / (1.0 + factor * 7.0);
+    if (factor > 0.6)
+    {
+        base_chunk_size *= 0.5;
+    }
+}
+
 int WaterRasterizer::performTessellation(CanvasPortion *canvas)
 {
     int chunk_factor, chunk_count, i, result;
     Vector3 cam = renderer->getCameraLocation(VECTOR_ZERO);
-    double radius_int, radius_ext, base_chunk_size, chunk_size;
-
-    base_chunk_size = 2.0 / (double)renderer->render_quality;
-    if (renderer->render_quality > 7)
-    {
-        base_chunk_size *= 0.5;
-    }
+    double radius_int, radius_ext, chunk_size;
 
     result = 0;
     chunk_factor = 1;

src/render/software/WaterRasterizer.h

@@ -19,8 +19,14 @@ public:
     virtual void rasterizeToCanvas(CanvasPortion* canvas) override;
     virtual Color shadeFragment(const CanvasFragment &fragment) const override;
 
+    virtual void setQuality(double factor) override;
+
 private:
     int performTessellation(CanvasPortion* canvas);
+
+private:
+    // Quality control
+    double base_chunk_size;
 };
 
 }