Add indirect draw rust shaders

Author: LegNeato

shaders/rust/Cargo.lock

@@ -55,6 +55,9 @@ members = [
     "pbribl/prefilterenvmap",
     "pbribl/skybox",
     "pbribl/filtercube",
+    "indirectdraw/indirectdraw",
+    "indirectdraw/ground",
+    "indirectdraw/skysphere",
 ]
 
 [workspace.dependencies]

shaders/rust/Cargo.toml

@@ -68,7 +68,7 @@ def compile_shader(shader_dir):
                 print(f"  Created {final_path.name} (entry point: {entry_point})")
 
                 # Special case: move to parent directory for nested shader structures
-                if shader_dir.parent.name in ["base", "descriptorsets", "dynamicuniformbuffer", "multisampling", "pipelines", "specializationconstants", "computeshader", "texturearray", "screenshot", "negativeviewportheight", "stencilbuffer", "parallaxmapping", "computecloth", "ssao", "shadowmapping", "deferred", "computenbody", "bloom", "hdr", "radialblur", "pbribl"]:
+                if shader_dir.parent.name in ["base", "descriptorsets", "dynamicuniformbuffer", "multisampling", "pipelines", "specializationconstants", "computeshader", "texturearray", "screenshot", "negativeviewportheight", "stencilbuffer", "parallaxmapping", "computecloth", "ssao", "shadowmapping", "deferred", "computenbody", "bloom", "hdr", "radialblur", "pbribl", "indirectdraw"]:
                     parent_dir = shader_dir.parent
                     parent_final_path = parent_dir / f"{shader_name}.{shader_type}.spv"
                     shutil.move(str(final_path), str(parent_final_path))
@@ -125,12 +125,6 @@ def main():
 
     print(f"Found {len(shader_dirs)} shader crates to build")
 
-    # Clean old .spv files
-    print("\nCleaning old files...")
-    for spv_file in rust_gpu_dir.rglob("*.spv"):
-        if "target" not in str(spv_file):
-            spv_file.unlink()
-    
     # Compile each shader crate
     total_success = 0
     total_failed = 0
@@ -150,4 +144,4 @@ def main():
         sys.exit(1)
 
 if __name__ == "__main__":
-    main()
+    main()

shaders/rust/compileshaders.py

@@ -0,0 +1,11 @@
+[package]
+name = "ground"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[lib]
+crate-type = ["dylib"]
+
+[dependencies]
+spirv-std = { workspace = true }

shaders/rust/indirectdraw/ground.frag.spv

@@ -0,0 +1,33 @@
+#![cfg_attr(target_arch = "spirv", no_std)]
+
+use spirv_std::spirv;
+use spirv_std::glam::{Vec2, Vec3, Vec4, Mat4};
+
+#[repr(C)]
+pub struct UBO {
+    projection: Mat4,
+    modelview: Mat4,
+}
+
+#[spirv(vertex)]
+pub fn main_vs(
+    in_pos: Vec4,
+    _in_normal: Vec3,
+    in_uv: Vec2,
+    _in_color: Vec3,
+    #[spirv(uniform, descriptor_set = 0, binding = 0)] ubo: &UBO,
+    #[spirv(position)] out_position: &mut Vec4,
+    out_uv: &mut Vec2,
+) {
+    *out_uv = in_uv * 32.0;
+    *out_position = ubo.projection * ubo.modelview * Vec4::new(in_pos.x, in_pos.y, in_pos.z, 1.0);
+}
+
+#[spirv(fragment)]
+pub fn main_fs(
+    in_uv: Vec2,
+    #[spirv(descriptor_set = 0, binding = 2)] sampler_color: &spirv_std::image::SampledImage<spirv_std::image::Image2d>,
+    out_color: &mut Vec4,
+) {
+    *out_color = sampler_color.sample(in_uv);
+}

shaders/rust/indirectdraw/ground.vert.spv

@@ -0,0 +1,10 @@
+[package]
+name = "indirectdraw"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["dylib"]
+
+[dependencies]
+spirv-std = { workspace = true }