Initial commit

This is working repository now. I had to clean this up due to
my f_ups, that made this simple repo around 200MB large.

Signed-off-by: Piotr Krygier <piotrkrygier@everyonecancode@xyz>

graphics/shaders/on_screen_text.frag

@@ -0,0 +1,8 @@
+#version 450
+
+layout(set = 0, binding = 0) uniform sampler2D overlay_tex;
+layout(location = 0) in vec2 uv;
+layout(location = 0) out vec4 out_color;
+void main() {
+    out_color = texture(overlay_tex, uv);
+}

graphics/shaders/on_screen_text.vert

@@ -0,0 +1,13 @@
+#version 450
+
+layout(location = 0) out vec2 uv;
+vec2 positions[3] = vec2[](
+    vec2(-1.0, -1.0),
+    vec2(3.0, -1.0),
+    vec2(-1.0, 3.0)
+);
+void main() {
+    uv = (positions[gl_VertexIndex] + 1.0) * 0.5;
+    gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
+}
+

graphics/shaders/shader.vert

@@ -0,0 +1,79 @@
+#version 450
+
+layout(binding = 0) uniform UniformBufferObject {
+    mat4 model;
+    mat4 view;
+    mat4 proj;
+} ubo;
+
+#define MAX_INSTANCES 1024
+
+struct InstanceData
+{
+    vec3 pos;
+    vec3 rot;
+    float scale;
+    uint texture_id;
+};
+
+layout(binding = 1) uniform InstanceUniformBuffer {
+    InstanceData instances[MAX_INSTANCES];
+};
+
+layout(location = 0) in vec3 inPosition;
+layout(location = 1) in vec3 inColor;
+layout(location = 2) in vec2 inTexCoord;
+
+layout(location = 0) out vec3 fragColor;
+layout(location = 1) out vec2 fragTexCoord;
+layout(location = 2) out uint outInstanceTextureId;
+
+
+void main()
+{
+    InstanceData instance = instances[gl_InstanceIndex];
+    mat4 gRotMat;
+    mat3 mx, my, mz;
+
+    // rotate around x
+    float s = sin(instance.rot.x + 0);
+    float c = cos(instance.rot.x + 0);
+
+    mx[0] = vec3(1, 0.0, 0.0);
+    mx[1] = vec3(0, c, -s);
+    mx[2] = vec3(0.0, s, c);
+
+    // rotate around y
+    s = sin(instance.rot.y + 0);
+    c = cos(instance.rot.y + 0);
+
+    my[0] = vec3(c, 0.0, s);
+    my[1] = vec3(0.0, 1.0, 0.0);
+    my[2] = vec3(-s, 0.0, c);
+
+    // rot around z
+    s = sin(instance.rot.z + 0);
+    c = cos(instance.rot.z + 0);
+
+    mz[0] = vec3(c, -s, 0.0);
+    mz[1] = vec3(s, c, 0.0);
+    mz[2] = vec3(0.0, 0.0, 1);
+
+    mat3 rotMat = mz * my * mx;
+
+    s = sin(instance.rot.y + 0);
+    c = cos(instance.rot.y + 0);
+    gRotMat[0] = vec4(c, 0.0, s, 0.0);
+    gRotMat[1] = vec4(0.0, 1.0, 0.0, 0.0);
+    gRotMat[2] = vec4(-s, 0.0, c, 0.0);
+    gRotMat[3] = vec4(0.0, 0.0, 0.0, 1.0);
+
+    vec4 locPos = vec4(inPosition.xyz * rotMat, 1.0);
+    vec4 pos = vec4((locPos.xyz * instance.scale) + instance.pos, 1.0);
+
+    gl_Position = ubo.proj * ubo.view * ubo.model * pos;
+
+    fragColor = inColor;
+    fragTexCoord = inTexCoord;
+    outInstanceTextureId = instance.texture_id;
+}

graphics/shaders/solid_objects.frag

@@ -0,0 +1,15 @@
+#version 450
+#extension GL_EXT_nonuniform_qualifier : enable
+
+layout(set = 0, binding = 2) uniform sampler2D texSampler[];
+
+layout(location = 0) in vec3 fragColor;
+layout(location = 1) in vec2 fragTexCoord;
+layout(location = 2) in flat uint instanceTextureId;
+
+layout(location = 0) out vec4 outColor;
+
+void main() {
+    vec4 texturePixels = texture(texSampler[instanceTextureId], fragTexCoord);
+    outColor = vec4(fragColor * texturePixels.rgb, texturePixels.a);
+}