Initial Commit

example/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.22)
+
+find_program(PICASSO NAMES picasso REQUIRED)
+
+# Function origanally Created in Re-Craft-3DS
+function(__amy_make_shader arg1 arg2)
+    # These only exist cause i was stupid
+    set(__FILE ${arg1})
+    set(__NAME ${arg2})
+
+    # Need to build shaders during config stage :(
+    execute_process(
+        COMMAND ${PICASSO} -o "${CMAKE_CURRENT_SOURCE_DIR}/romfs/shaders/${__NAME}.shbin" "${__FILE}"
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+    )
+endfunction()
+
+project(amethyst-example)
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED true)
+
+__amy_make_shader(${CMAKE_CURRENT_SOURCE_DIR}/shaders/shader2d.v.pica shader2d)
+__amy_make_shader(${CMAKE_CURRENT_SOURCE_DIR}/shaders/lithium.v.pica lithium)
+
+add_executable(${PROJECT_NAME} source/main.cpp)
+target_link_libraries(${PROJECT_NAME} PRIVATE amethyst)
+target_compile_options(${PROJECT_NAME} PRIVATE -O2)
+
+ctr_generate_smdh(
+    ${CMAKE_BINARY_DIR}/${PROJECT_NAME}.smdh
+    NAME "Amethyst Example"
+    DESCRIPTION "Example of Amethyst lib"
+    AUTHOR "tobid7"
+    ICON "${CMAKE_CURRENT_SOURCE_DIR}/romfs/icon.png"
+)
+
+ctr_create_3dsx(
+    ${PROJECT_NAME}
+    OUTPUT "${CMAKE_BINARY_DIR}/${PROJECT_NAME}.3dsx"
+    SMDH "${CMAKE_BINARY_DIR}/${PROJECT_NAME}.smdh"
+    ROMFS "${CMAKE_CURRENT_SOURCE_DIR}/romfs"
+)

example/shaders/lithium.v.pica

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+; LI7 Shader
+; Constants
+.constf myconst(0.0, 1.0, 0.00392156862745, 0.0)
+.alias  ones  	myconst.yyyy ; Vector full of ones
+
+; Uniforms
+.fvec projection[4]
+
+; Outputs
+.out out_position		position
+.out out_color			color
+.out out_uv				texcoord0
+
+; Inputs
+.alias in_xy		v0
+.alias in_uvc 		v1
+.alias in_col	    v2
+
+.entry vmain
+.proc vmain
+	mov r0.xy, in_xy.xy
+	mov r0.w, ones
+
+	dp4 out_position.x, projection[0], r0
+	dp4 out_position.y, projection[1], r0
+	dp4 out_position.z, projection[2], r0
+	dp4 out_position.w, projection[3], r0
+
+	mov out_uv, in_uvc.xy
+
+	mul r1, myconst.zzzz, in_col
+	mov out_color, r1
+	end
+.end

example/shaders/shader2d.v.pica

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+; Example PICA200 vertex shader
+
+; Uniforms
+.fvec projection[4]
+
+; Constants
+.constf myconst(0.0, 1.0, -1.0, 0.1)
+.constf myconst2(0.3, 0.0, 0.0, 0.0)
+.alias  zeros myconst.xxxx ; Vector full of zeros
+.alias  ones  myconst.yyyy ; Vector full of ones
+
+; Outputs
+.out outpos position
+.out outclr color
+
+; Inputs (defined as aliases for convenience)
+.alias inpos v0
+.alias inclr v1
+
+.bool test
+
+.proc main
+	; Force the w component of inpos to be 1.0
+	mov r0.xyz, inpos
+	mov r0.w,   ones
+
+	; outpos = projectionMatrix * inpos
+	dp4 outpos.x, projection[0], r0
+	dp4 outpos.y, projection[1], r0
+	dp4 outpos.z, projection[2], r0
+	dp4 outpos.w, projection[3], r0
+
+	; outclr = inclr
+	mov outclr, inclr
+
+	; We're finished
+	end
+.end

example/source/main.cpp

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+#include <amethyst.hpp>
+
+static C3D_Mtx projection;
+
+int main() {
+  amy::registerCxxExceptionHandler();
+  amy::ctru::init();
+  amy::c3d::init();
+  auto top = amy::c3d::createScreen(GFX_TOP, GFX_LEFT);
+  auto shader = new amy::c3d::shader("romfs:/shaders/shader2d.shbin");
+  shader->input(GPU_FLOAT, 3);
+  shader->input(GPU_FLOAT, 3);
+  amy::c3d::frag::edit();
+  amy::c3d::frag::src(C3D_Both);
+  amy::c3d::frag::func(C3D_Both, GPU_REPLACE);
+  Mtx_Identity(&projection);
+  Mtx_OrthoTilt(&projection, 0.0, 400.0, 0.0, 240.0, 0.0, 1.0, true);
+  while (aptMainLoop()) {
+    amy::c3d::startFrame();
+    top->startDraw();
+    top->clear();
+    shader->use();
+    shader->setMat4(0, &projection);
+    C3D_ImmDrawBegin(GPU_TRIANGLES);
+    C3D_ImmSendAttrib(200, 200, 0.5, 0);
+    C3D_ImmSendAttrib(1, 0, 0, 1);
+    C3D_ImmSendAttrib(100, 40, 0.5, 0);
+    C3D_ImmSendAttrib(0, 1, 0, 1);
+    C3D_ImmSendAttrib(300, 40, 0.5, 0);
+    C3D_ImmSendAttrib(0, 0, 1, 1);
+    C3D_ImmDrawEnd();
+    amy::c3d::endFrame();
+  }
+  amy::c3d::deleteScreen(top);
+  return 0;
+}