update DrawContext

src/graphics/core/Batch2D.hpp

@@ -11,7 +11,7 @@
 class Mesh;
 class Texture;
 
-class Batch2D {
+class Batch2D : public Flushable {
     std::unique_ptr<float[]> buffer;
     size_t capacity;
     std::unique_ptr<Mesh> mesh;
@@ -89,7 +89,7 @@ public:
         float r4, float g4, float b4, int sh
     );
 
-    void flush();
+    void flush() override;
 
     void lineWidth(float width);
 };

src/graphics/core/Batch3D.hpp

@@ -2,6 +2,7 @@
 #define GRAPHICS_CORE_BATCH3D_HPP_
 
 #include "../../typedefs.hpp"
+#include "commons.hpp"
 
 #include <memory>
 #include <stdlib.h>
@@ -11,7 +12,7 @@ class Mesh;
 class Texture;
 struct UVRegion;
 
-class Batch3D {
+class Batch3D : public Flushable {
     std::unique_ptr<float[]> buffer;
     size_t capacity;
     std::unique_ptr<Mesh> mesh;
@@ -54,7 +55,7 @@ public:
     void blockCube(const glm::vec3 size, const UVRegion(&texfaces)[6], const glm::vec4 tint, bool shading=true);
     void point(glm::vec3 pos, glm::vec2 uv, glm::vec4 tint);
     void point(glm::vec3 pos, glm::vec4 tint);
-    void flush();
+    void flush() override;
     void flushPoints();
 };
 

src/graphics/core/DrawContext.cpp

@@ -29,12 +29,13 @@ DrawContext::DrawContext(
     Batch2D* g2d
 ) : parent(parent), 
     viewport(std::move(viewport)),
-    g2d(g2d) 
+    g2d(g2d),
+    flushable(g2d)
 {}
 
 DrawContext::~DrawContext() {
-    if (g2d) {
-        g2d->flush();
+    if (flushable) {
+        flushable->flush();
     }
 
     while (scissorsCount--) {
@@ -73,6 +74,9 @@ DrawContext::~DrawContext() {
     if (blendMode != parent->blendMode) {
         set_blend_mode(parent->blendMode);
     }
+    if (lineWidth != parent->lineWidth) {
+        glLineWidth(parent->lineWidth);
+    }
 }
 
 const Viewport& DrawContext::getViewport() const {
@@ -83,10 +87,10 @@ Batch2D* DrawContext::getBatch2D() const {
     return g2d;
 }
 
-DrawContext DrawContext::sub() const {
-    auto ctx = DrawContext(this, viewport, g2d);
-    ctx.depthTest = depthTest;
-    ctx.cullFace = cullFace;
+DrawContext DrawContext::sub(Flushable* flushable) const {
+    auto ctx = DrawContext(*this);
+    ctx.parent = this;
+    ctx.flushable = flushable;
     return ctx;
 }
 
@@ -148,3 +152,8 @@ void DrawContext::setScissors(glm::vec4 area) {
     Window::pushScissor(area);
     scissorsCount++;
 }
+
+void DrawContext::setLineWidth(float width) {
+    lineWidth = width;
+    glLineWidth(width);
+}

src/graphics/core/DrawContext.hpp

@@ -12,19 +12,22 @@ class DrawContext {
     const DrawContext* parent;
     Viewport viewport;
     Batch2D* const g2d;
+    Flushable* flushable = nullptr;
     Framebuffer* fbo = nullptr;
     bool depthMask = true;
     bool depthTest = false;
     bool cullFace = false;
     BlendMode blendMode = BlendMode::normal;
     int scissorsCount = 0;
+    float lineWidth = 1.0f;
 public:
-    DrawContext(const DrawContext* parent, Viewport  viewport, Batch2D* g2d);
+    DrawContext(const DrawContext* parent, Viewport viewport, Batch2D* g2d);
     ~DrawContext();
     
     Batch2D* getBatch2D() const;
+    
     const Viewport& getViewport() const;
-    DrawContext sub() const;
+    DrawContext sub(Flushable* flushable=nullptr) const;
 
     void setViewport(const Viewport& viewport);
     void setFramebuffer(Framebuffer* fbo);
@@ -33,6 +36,7 @@ public:
     void setCullFace(bool flag);
     void setBlendMode(BlendMode mode);
     void setScissors(glm::vec4 area);
+    void setLineWidth(float width);
 };
 
 #endif // GRAPHICS_CORE_GFX_CONTEXT_HPP_

src/graphics/core/LineBatch.cpp

@@ -22,7 +22,7 @@ void LineBatch::line(
     float r, float g, float b, float a
 ) {
     if (index + LB_VERTEX_SIZE * 2 >= capacity) {
-        render();
+        flush();
     }
     buffer[index] = x1;
     buffer[index+1] = y1;
@@ -65,7 +65,7 @@ void LineBatch::box(float x, float y, float z, float w, float h, float d,
     line(x+w, y+h, z-d, x+w, y+h, z+d, r,g,b,a);
 }
 
-void LineBatch::render(){
+void LineBatch::flush(){
     if (index == 0)
         return;
     mesh->reload(buffer.get(), index / LB_VERTEX_SIZE);

src/graphics/core/LineBatch.hpp

@@ -5,9 +5,11 @@
 #include <stdlib.h>
 #include <glm/glm.hpp>
 
+#include "commons.hpp"
+
 class Mesh;
 
-class LineBatch {
+class LineBatch : public Flushable {
     std::unique_ptr<Mesh> mesh;
     std::unique_ptr<float[]> buffer;
     size_t index;
@@ -29,7 +31,7 @@ public:
             rgba.r, rgba.g, rgba.b, rgba.a);
     }
 
-    void render();
+    void flush() override;
     void lineWidth(float width);
 };
 

src/graphics/core/commons.hpp

@@ -11,4 +11,11 @@ enum class BlendMode {
     normal, addition, inversion
 };
 
+class Flushable {
+public:
+    virtual ~Flushable() = default;
+
+    virtual void flush() = 0;
+};
+
 #endif // GRAPHICS_CORE_COMMONS_HPP_

src/graphics/render/WorldRenderer.cpp

@@ -243,15 +243,15 @@ void WorldRenderer::renderBlockSelection() {
 void WorldRenderer::renderLines(
     Camera* camera, Shader* linesShader, const DrawContext& pctx
 ) {
+    auto ctx = pctx.sub(lineBatch.get());
     linesShader->use();
     linesShader->uniformMatrix("u_projview", camera->getProjView());
     if (player->selection.vox.id != BLOCK_VOID) {
         renderBlockSelection();
     }
     if (player->debug && showEntitiesDebug) {
-        level->entities->renderDebug(*lineBatch, *frustumCulling, pctx);
+        level->entities->renderDebug(*lineBatch, *frustumCulling, ctx);
     }
-    lineBatch->render();
 }
 
 void WorldRenderer::renderDebugLines(
@@ -259,7 +259,7 @@ void WorldRenderer::renderDebugLines(
     Camera* camera,
     Shader* linesShader
 ) {
-    DrawContext ctx = pctx.sub();
+    DrawContext ctx = pctx.sub(lineBatch.get());
     const auto& viewport = ctx.getViewport();
     uint displayWidth = viewport.getWidth();
     uint displayHeight = viewport.getHeight();
@@ -296,14 +296,13 @@ void WorldRenderer::renderDebugLines(
     lineBatch->line(0.f, 0.f, 0.f, length, 0.f, 0.f, 0.f, 0.f, 0.f, 1.f);
     lineBatch->line(0.f, 0.f, 0.f, 0.f, length, 0.f, 0.f, 0.f, 0.f, 1.f);
     lineBatch->line(0.f, 0.f, 0.f, 0.f, 0.f, length, 0.f, 0.f, 0.f, 1.f);
-    lineBatch->render();
+    lineBatch->flush();
 
     ctx.setDepthTest(true);
     lineBatch->lineWidth(2.0f);
     lineBatch->line(0.f, 0.f, 0.f, length, 0.f, 0.f, 1.f, 0.f, 0.f, 1.f);
     lineBatch->line(0.f, 0.f, 0.f, 0.f, length, 0.f, 0.f, 1.f, 0.f, 1.f);
     lineBatch->line(0.f, 0.f, 0.f, 0.f, 0.f, length, 0.f, 0.f, 1.f, 1.f);
-    lineBatch->render();
 }
 
 void WorldRenderer::draw(
@@ -395,5 +394,5 @@ void WorldRenderer::drawBorders(int sx, int sy, int sz, int ex, int ey, int ez)
         lineBatch->line(ex, i, sz,
                         sx, i, sz, 0, 0.8f, 0, 1);
     }
-    lineBatch->render();
+    lineBatch->flush();
 }

src/objects/Entities.cpp

@@ -462,33 +462,35 @@ static void debug_render_skeleton(
 void Entities::renderDebug(
     LineBatch& batch, const Frustum& frustum, const DrawContext& pctx
 ) {
-    batch.lineWidth(1.0f);
-    auto view = registry.view<Transform, Rigidbody>();
-    for (auto [entity, transform, rigidbody] : view.each()) {
-        const auto& hitbox = rigidbody.hitbox;
-        const auto& pos = transform.pos;
-        const auto& size = transform.size;
-        if (!frustum.isBoxVisible(pos-size, pos+size)) {
-            continue;
-        }
-        batch.box(hitbox.position, hitbox.halfsize * 2.0f, glm::vec4(1.0f));
-
-        for (auto& sensor : rigidbody.sensors) {
-            if (sensor.type != SensorType::AABB)
+    {
+        auto ctx = pctx.sub(&batch);
+        ctx.setLineWidth(1);
+        auto view = registry.view<Transform, Rigidbody>();
+        for (auto [entity, transform, rigidbody] : view.each()) {
+            const auto& hitbox = rigidbody.hitbox;
+            const auto& pos = transform.pos;
+            const auto& size = transform.size;
+            if (!frustum.isBoxVisible(pos-size, pos+size)) {
                 continue;
-            batch.box(
-                sensor.calculated.aabb.center(), 
-                sensor.calculated.aabb.size(), 
-                glm::vec4(1.0f, 1.0f, 0.0f, 1.0f));
+            }
+            batch.box(hitbox.position, hitbox.halfsize * 2.0f, glm::vec4(1.0f));
+
+            for (auto& sensor : rigidbody.sensors) {
+                if (sensor.type != SensorType::AABB)
+                    continue;
+                batch.box(
+                    sensor.calculated.aabb.center(), 
+                    sensor.calculated.aabb.size(), 
+                    glm::vec4(1.0f, 1.0f, 0.0f, 1.0f));
+            }
         }
     }
-    batch.render();
     {
         auto view = registry.view<Transform, rigging::Skeleton>();
-        auto ctx = pctx.sub();
+        auto ctx = pctx.sub(&batch);
         ctx.setDepthTest(false);
         ctx.setDepthMask(false);
-        batch.lineWidth(2);
+        ctx.setLineWidth(2);
         for (auto [entity, transform, skeleton] : view.each()) {
             auto config = skeleton.config;
             const auto& pos = transform.pos;
@@ -499,8 +501,6 @@ void Entities::renderDebug(
             auto bone = config->getRoot();
             debug_render_skeleton(batch, bone, skeleton);
         }
-        batch.render();
-        batch.lineWidth(1);
     }
 }