src/graphics moved to src/graphics/core

2024-03-18 20:47:35 +03:00
parent ba762584a7
commit b56408a202
63 changed files with 156 additions and 147 deletions
@@ -0,0 +1,90 @@
+#include "TextureAnimation.h"
+#include "Texture.h"
+#include "Framebuffer.h"
+
+#include <GL/glew.h>
+#include <unordered_set>
+
+TextureAnimator::TextureAnimator() {
+    glGenFramebuffers(1, &fboR);
+    glGenFramebuffers(1, &fboD);
+}
+
+TextureAnimator::~TextureAnimator() {
+    glDeleteFramebuffers(1, &fboR);
+    glDeleteFramebuffers(1, &fboD);
+}
+
+void TextureAnimator::addAnimations(const std::vector<TextureAnimation>& animations) {
+    for (const auto& elem : animations) {
+        addAnimation(elem);
+    }
+}
+
+void TextureAnimator::update(float delta) {
+    std::unordered_set<uint> changedTextures;
+
+    for (auto& elem : animations) {
+        elem.timer += delta;
+        size_t frameNum = elem.currentFrame;
+        Frame frame = elem.frames[elem.currentFrame];
+        while (elem.timer >= frame.duration) {
+            elem.timer -= frame.duration;
+            elem.currentFrame++;
+            if (elem.currentFrame >= elem.frames.size()) elem.currentFrame = 0;
+            frame = elem.frames[elem.currentFrame];
+        }
+        if (frameNum != elem.currentFrame){
+            uint elemDstId = elem.dstTexture->getId();
+            uint elemSrcId = elem.srcTexture->getId();
+
+            if (changedTextures.find(elemDstId) == changedTextures.end()) 
+                changedTextures.insert(elemDstId);
+
+            glBindFramebuffer(GL_FRAMEBUFFER, fboD);
+            glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, elemDstId, 0);
+
+            glBindFramebuffer(GL_FRAMEBUFFER, fboR);
+            glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, elemSrcId, 0);
+            glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+            glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fboD);
+            glBindFramebuffer(GL_READ_FRAMEBUFFER, fboR);
+
+            float srcPosY = elem.srcTexture->getHeight() - frame.size.y - frame.srcPos.y; // vertical flip
+
+            // Extensions
+            const int ext = 2;
+            for (int y = -1; y <= 1; y++) {
+                for (int x = -1; x <= 1; x++) {
+                    if (x == 0 && y == 0)
+                        continue;
+                    glBlitFramebuffer(
+                        frame.srcPos.x, srcPosY, frame.srcPos.x + frame.size.x, srcPosY + frame.size.y,
+                        frame.dstPos.x+x*ext, frame.dstPos.y+y*ext,	
+                        frame.dstPos.x + frame.size.x+x*ext, frame.dstPos.y + frame.size.y+y*ext,
+                        GL_COLOR_BUFFER_BIT, GL_NEAREST
+                    );
+                }
+            }
+
+            glBlitFramebuffer(
+                frame.srcPos.x, srcPosY,
+                frame.srcPos.x + frame.size.x,	
+                srcPosY + frame.size.y,
+                frame.dstPos.x, frame.dstPos.y,	
+                frame.dstPos.x + frame.size.x,
+                frame.dstPos.y + frame.size.y,
+                GL_COLOR_BUFFER_BIT, GL_NEAREST
+            );
+        }
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+        glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
+    }
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+    for (auto& elem : changedTextures) {
+        glBindTexture(GL_TEXTURE_2D, elem);
+        glGenerateMipmap(GL_TEXTURE_2D);
+    }
+    glBindTexture(GL_TEXTURE_2D, 0);
+}