1 files changed, 99 insertions, 0 deletions

diff --git a/src/libjin/Render/Texture.cpp b/src/libjin/Render/Texture.cpp
new file mode 100644
index 0000000..cee3552
--- /dev/null
+++ b/src/libjin/Render/Texture.cpp
@@ -0,0 +1,99 @@
+#include "../modules.h"
+#if JIN_MODULES_RENDER
+
+#include <fstream>
+#include "texture.h"
+#include "3rdparty/stb/stb_image.h"
+#include "../utils/utils.h"
+#include "../math/math.h"
+
+namespace jin
+{
+namespace render
+{
+
+    Texture* Texture::createTexture(const char* file)
+    {
+        std::ifstream fs; 
+        fs.open(file, std::ios::binary);
+        Texture* tex = nullptr;
+        if (fs.is_open())
+        {
+            fs.seekg(0, std::ios::end); 
+            int size = fs.tellg();
+            fs.seekg(0, std::ios::beg); 
+            char* buffer = (char*)malloc(size); 
+            memset(buffer, 0, size);
+            fs.read(buffer, size);
+            tex = createTexture(buffer, size);
+            free(buffer);
+        }
+        fs.close();
+        return tex; 
+    }
+
+    Texture* Texture::createTexture(const void* mem, size_t size)
+    {
+        Texture* tex = new Texture(); 
+        if(!tex->loadb(mem, size))
+        {
+            delete tex; 
+            tex = nullptr;
+        }
+        return tex;
+    }
+
+    Texture::Texture()
+        : Drawable(), pixels(0)
+    {
+    }
+
+    Texture::~Texture()
+    {
+        stbi_image_free(pixels);
+    }
+
+    color Texture::getPixel(int x, int y)
+    {
+        if (without(x, 0, width) || without(y, 0, height))
+        {
+            return { 0 };
+        }
+        return pixels[x + y * width];
+    }
+    
+    bool Texture::loadb(const void* b, size_t size)
+    {
+        // ʹ��stbi_load_from_memory���
+        unsigned char* textureData = stbi_load_from_memory((unsigned char *)b, size, &width, &height, NULL, STBI_rgb_alpha);
+        if (textureData == 0) return false;
+        pixels = (color*)textureData;
+
+        glGenTextures(1, &texture);
+        glBindTexture(GL_TEXTURE_2D, texture);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width,
+            height, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData);
+
+        // set render vertices 
+        Drawable::setVertices(
+            new float [DRAWABLE_V_SIZE] {
+            0, 0,
+            0, (float)height,
+            (float)width, (float)height,
+            (float)width, 0,
+        },
+            new float [DRAWABLE_V_SIZE] {
+                0, 0,
+                0, 1,
+                1, 1,
+                1, 0
+            }
+            );
+
+        return true; 
+    }
+}
+}
+#endif // JIN_MODULES_RENDER
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