sync

examples/simple/main.cpp

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+/**
+ * paradiso - Paradigmen der Softwareentwicklung
+ *
+ * (c) Copyright 2023 Hartmut Seichter
+ *
+ */
+
+#include <paradiso/bitmap.hpp>
+#include <paradiso/context.hpp>
+#include <paradiso/geometry.hpp>
+#include <paradiso/renderer.hpp>
+#include <paradiso/shader.hpp>
+#include <paradiso/sprite.hpp>
+#include <paradiso/window.hpp>
+
+#include <iomanip>
+#include <iostream>
+
+void setup_shaders(paradiso::Shader& shader) {
+    const auto unlit_v = R"(
+#version 330 core
+
+layout (location = 0) in vec3 vertices;
+layout (location = 1) in vec3 normals;
+layout (location = 2) in vec2 texture_coords;
+
+// uniform mat4 model;
+// uniform mat4 view;
+// uniform mat4 projection;
+
+out vec2 tex_c;
+
+void main() {
+    tex_c = texture_coords;
+    // gl_Position = projection * view * model * vec4(vertices, 1.0);
+     gl_Position = vec4(vertices, 1.0);
+}
+)";
+
+    const auto unlit_f = R"(
+#version 330 core
+
+uniform vec4 color = vec4(1.0, 0.0, 0.0, 1.0);
+uniform sampler2D tex_color;
+
+in vec2 tex_c;
+
+out vec4 frag_color;
+
+void main() {
+    frag_color = texture(tex_color,tex_c); // *  color;
+})";
+
+    shader.set_source(paradiso::Shader::Type::Vertex, unlit_v);
+    shader.set_source(paradiso::Shader::Type::Fragment, unlit_f);
+
+    shader.build();
+}
+
+auto main() -> int {
+
+    auto checker_board = paradiso::Bitmap::empty(paradiso::Size{4, 4});
+
+    auto checker_board_2 = paradiso::Bitmap::from_data(
+        paradiso::Size{2, 2}, 
+        paradiso::RGBA::from_rgb(0x00, 0xFF, 0x00), // G
+        paradiso::RGBA::from_rgb(0xFF, 0x00, 0x00), // R
+        paradiso::RGBA::from_rgb(0x00, 0x00, 0xFF), // B
+        paradiso::RGBA::from_rgb(0xFF, 0x00, 0xFF));// C
+
+    auto window = paradiso::Window();
+
+    window.set_size(paradiso::Size{.width = 1280, .height = 720})
+        .set_position(paradiso::Point{.x = 100, .y = 100})
+        .set_title("PardiSO")
+        .set_visible(true);
+
+    auto ctx = paradiso::Context{};
+
+    auto sprite = paradiso::Sprite{
+        .bitmap = checker_board_2
+    };
+
+    auto renderer = paradiso::Renderer{};
+
+    auto shader = paradiso::Shader{};
+
+    setup_shaders(shader);
+
+    uint8_t green_slider = 0x00;
+    bool want_close{false};
+    int frame_counter = 10;
+
+    window.set_keyboardcallback(
+        [&](auto& w, int key, int scancode, int action, int mods) {
+            if (key == 'Q' || key == 256)
+                want_close = true;
+            else if (key == 'A' ) {
+                green_slider += 10;
+            }
+        });
+
+    while (window.update([&](auto& w) -> bool {
+
+        ctx.set_clearcolor(paradiso::RGBA::from_rgb(0xFF, green_slider, 0x00));
+        ctx.set_viewport(paradiso::Rectangle{
+            .size = w.client_size()
+        });
+        ctx.clear();
+
+        renderer.draw(sprite, shader);
+
+        return !want_close;
+    })) {
+    };
+
+    return 0;
+}