- [WIP] Solventant el problema dels shaders

source/backends/SDL3/shader.cpp

@@ -30,6 +30,9 @@ namespace backend
         SDL_FPoint tex_size = {320, 240};
         bool can_use_opengl = false;
         bool using_opengl = false;
+        const char *vShaderSource = nullptr;
+        const char *fShaderSource = nullptr;
+
 
         #ifndef __APPLE__
 
@@ -148,17 +151,26 @@ namespace backend
             return programId;
         }
 
-        void init(const char* vshader, const char* fshader)
+        void quit()
         {
-            int filesize;
-            char *vshaderfile = mini::file::getfilebuffer(vshader, filesize, true);
-            
-            char *fshaderfile = nullptr;
-            if (fshader) { fshaderfile = mini::file::getfilebuffer(fshader, filesize, true); }
+            programId = 0;
+            can_use_opengl = false;
+            using_opengl = false;
+        }
+
+        void reinit()
+        {
+            if (!vShaderSource) return;
 
             SDL_GetWindowSize(video::window, &win_size.x, &win_size.y);
             SDL_GetTextureSize(video::tex_shader, &tex_size.x, &tex_size.y);
 
+            int filesize;
+            char *vshaderfile = mini::file::getfilebuffer(vShaderSource, filesize, true);
+            
+            char *fshaderfile = nullptr;
+            if (fShaderSource) { fshaderfile = mini::file::getfilebuffer(fShaderSource, filesize, true); }
+
             SDL_PropertiesID props = SDL_GetTextureProperties(video::tex_shader);
             int access = SDL_GetNumberProperty(props, SDL_PROP_TEXTURE_ACCESS_NUMBER, -1);
             if (access != SDL_TEXTUREACCESS_TARGET) {
@@ -190,7 +202,16 @@ namespace backend
                 return;
             }
             can_use_opengl = true;
-            return;
+        }
+
+        void init(const char* vshader, const char* fshader)
+        {
+            vShaderSource = vshader;
+            fShaderSource = fshader;
+            programId = 0;
+            can_use_opengl = false;
+            using_opengl = false;
+            reinit();
         }
 
         void enable() { if (can_use_opengl) using_opengl = true; }
@@ -216,7 +237,7 @@ namespace backend
                 glEnable(GL_TEXTURE_2D);
                 glActiveTexture(GL_TEXTURE0);
                 glBindTexture(GL_TEXTURE_2D, 1);
-                glViewport(0, 0, win_size.x, win_size.y);
+                glViewport(backend::video::dest_rect.x, backend::video::dest_rect.y, backend::video::dest_rect.w, backend::video::dest_rect.h);
                 
                 glBegin(GL_TRIANGLE_STRIP);
                     glTexCoord2f(0.0f, 0.0f);
@@ -234,7 +255,7 @@ namespace backend
                 if (programId != 0) glUseProgram(oldProgramId);
 
             } else {
-                SDL_RenderTexture(backend::video::renderer, backend::video::tex_shader, NULL, NULL);
+                SDL_RenderTexture(backend::video::renderer, backend::video::tex_shader, NULL, &backend::video::dest_rect);
                 SDL_RenderPresent(backend::video::renderer);
             }
             if (glGetError()) { printf("GLERROR!\n"); ::exit(1); }