From a80bf6bb6cb8ab8c5a1430f9f9dbc214f71bdddf Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Fri, 22 Oct 2021 07:29:34 +0200
Subject: Use shader

---
 src/graphics/Font.cpp   |  4 ++--
 src/graphics/Image.cpp  |  4 ++--
 src/graphics/Shader.cpp | 40 ++++++++++++++++++++++++++++++++++++++++
 src/window/Window.cpp   | 11 ++++++++++-
 4 files changed, 54 insertions(+), 5 deletions(-)
 create mode 100644 src/graphics/Shader.cpp

(limited to 'src')

diff --git a/src/graphics/Font.cpp b/src/graphics/Font.cpp
index 52698d3..7b5dd68 100644
--- a/src/graphics/Font.cpp
+++ b/src/graphics/Font.cpp
@@ -9,10 +9,10 @@ namespace mgl {
         mgl_font_unload(&font);
     }
 
-    bool Font::load_from_file(const std::string &filepath, unsigned int character_size) {
+    bool Font::load_from_file(const char *filepath, unsigned int character_size) {
         if(font.texture.id)
             return false;
-        return mgl_font_load_from_file(&font, filepath.c_str(), character_size) == 0;
+        return mgl_font_load_from_file(&font, filepath, character_size) == 0;
     }
 
     unsigned int Font::get_character_size() const {
diff --git a/src/graphics/Image.cpp b/src/graphics/Image.cpp
index c45da15..493fad7 100644
--- a/src/graphics/Image.cpp
+++ b/src/graphics/Image.cpp
@@ -10,10 +10,10 @@ namespace mgl {
         mgl_image_unload(&image);
     }
 
-    bool Image::load_from_file(const std::string &filepath) {
+    bool Image::load_from_file(const char *filepath) {
         if(image.data)
             return false;
-        return mgl_image_load_from_file(&image, filepath.c_str()) == 0;
+        return mgl_image_load_from_file(&image, filepath) == 0;
     }
 
     unsigned char* Image::data() {
diff --git a/src/graphics/Shader.cpp b/src/graphics/Shader.cpp
new file mode 100644
index 0000000..96fe8ba
--- /dev/null
+++ b/src/graphics/Shader.cpp
@@ -0,0 +1,40 @@
+#include "../../include/mglpp/graphics/Shader.hpp"
+
+namespace mgl {
+    Shader::Shader() {
+        shader_program.id = 0;
+    }
+
+    Shader::~Shader() {
+        mgl_shader_program_deinit(&shader_program);
+    }
+
+    bool Shader::load_from_file(const char *filepath, Type type) {
+        if(shader_program.id)
+            return false;
+        
+        int res = mgl_shader_program_init(&shader_program);
+        if(res != 0)
+            return false;
+
+        res = mgl_shader_program_add_shader_from_file(&shader_program, filepath, (mgl_shader_type)type);
+        if(res != 0)
+            return false;
+
+        return mgl_shader_program_finalize(&shader_program) == 0;
+    }
+
+    bool Shader::set_uniform(const char *name, vec2f value) {
+        if(!shader_program.id)
+            return false;
+        return mgl_shader_program_set_uniform_vec2f(&shader_program, name, { value.x, value.y }) == 0;
+    }
+
+    // static
+    void Shader::use(Shader *shader) {
+        if(shader)
+            mgl_shader_program_use(&shader->shader_program);
+        else
+            mgl_shader_program_use(nullptr);
+    }
+}
\ No newline at end of file
diff --git a/src/window/Window.cpp b/src/window/Window.cpp
index bc1f5ac..79e015b 100644
--- a/src/window/Window.cpp
+++ b/src/window/Window.cpp
@@ -1,6 +1,7 @@
 #include "../../include/mglpp/window/Window.hpp"
 #include "../../include/mglpp/window/Event.hpp"
 #include "../../include/mglpp/graphics/Drawable.hpp"
+#include "../../include/mglpp/graphics/Shader.hpp"
 
 extern "C" {
 #include <mgl/window/event.h>
@@ -36,9 +37,13 @@ namespace mgl {
         mgl_window_clear(&window, mgl_color{color.r, color.g, color.b, color.a});
     }
 
-    void Window::draw(Drawable &drawable) {
+    void Window::draw(Drawable &drawable, Shader *shader) {
         // TODO: Make the opengl context active for this thread and window, if it already isn't
+        if(shader)
+            mgl::Shader::use(shader);
         drawable.draw(*this);
+        if(shader)
+            mgl::Shader::use(nullptr);
     }
 
     void Window::display() {
@@ -47,6 +52,10 @@ namespace mgl {
         mgl_window_display(&window);
     }
 
+    vec2i Window::get_size() const {
+        return { window.size.x, window.size.y };
+    }
+
     vec2i Window::get_cursor_position() const {
         return { window.cursor_position.x, window.cursor_position.y };
     }
-- 
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