refa Use Vulkan for graphics

This is a partial refactory. Some functionalities implemented in
SDL were removed and need reimplementation.

2 files changed, 44 insertions, 0 deletions

diff --git a/glsl/shader.frag b/glsl/shader.frag
new file mode 100644
index 0000000..39aa83c
--- /dev/null
+++ b/glsl/shader.frag
@@ -0,0 +1,14 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout(location = 0) in vec3 in_frag_color;
+layout(location = 1) in vec2 in_frag_texture_coord;
+
+layout(location = 0) out vec4 out_color;
+
+layout(set = 0, binding = 1) uniform sampler2D texture_sampler;
+
+void main()
+{
+  out_color = texture(texture_sampler, in_frag_texture_coord);
+}
diff --git a/glsl/shader.vert b/glsl/shader.vert
new file mode 100644
index 0000000..2407255
--- /dev/null
+++ b/glsl/shader.vert
@@ -0,0 +1,30 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout(location = 0) in vec3 in_position;
+layout(location = 1) in vec3 in_normal;
+layout(location = 2) in vec3 in_color;
+layout(location = 3) in vec2 in_texture_coord;
+
+layout(location = 0) out vec3 frag_color;
+layout(location = 1) out vec2 frag_texture_coord;
+
+layout(set = 0, binding = 0) uniform UBOModelInstance
+{
+  mat4 model[128];
+} ubo_model_instance;
+
+layout(set = 1, binding = 0) uniform UBOViewProjection
+{
+  mat4 view;
+  mat4 proj;
+} ubo_view_projection;
+
+void main()
+{
+  gl_Position =
+      ubo_view_projection.proj * ubo_view_projection.view *
+      ubo_model_instance.model[gl_InstanceIndex] * vec4(in_position, 1.0);
+  frag_color = in_color;
+  frag_texture_coord = in_texture_coord;
+}