4 files changed, 43 insertions, 31 deletions
diff --git a/src/video_core/host_shaders/CMakeLists.txt b/src/video_core/host_shaders/CMakeLists.txt
index 4c7399d5a..3494318ca 100644
--- a/src/video_core/host_shaders/CMakeLists.txt
+++ b/src/video_core/host_shaders/CMakeLists.txt
@@ -5,6 +5,7 @@ set(SHADER_FILES
     convert_float_to_depth.frag
     full_screen_triangle.vert
     opengl_copy_bc4.comp
+    opengl_copy_bgra.comp
     opengl_present.frag
     opengl_present.vert
     pitch_unswizzle.comp
@@ -12,7 +13,6 @@ set(SHADER_FILES
     vulkan_blit_depth_stencil.frag
     vulkan_present.frag
     vulkan_present.vert
-    vulkan_quad_array.comp
     vulkan_quad_indexed.comp
     vulkan_uint8.comp
 )
@@ -20,6 +20,7 @@ set(SHADER_FILES
 find_program(GLSLANGVALIDATOR "glslangValidator" REQUIRED)
 
 set(GLSL_FLAGS "")
+set(QUIET_FLAG "--quiet")
 
 set(SHADER_INCLUDE ${CMAKE_CURRENT_BINARY_DIR}/include)
 set(SHADER_DIR ${SHADER_INCLUDE}/video_core/host_shaders)
@@ -28,6 +29,23 @@ set(HOST_SHADERS_INCLUDE ${SHADER_INCLUDE} PARENT_SCOPE)
 set(INPUT_FILE ${CMAKE_CURRENT_SOURCE_DIR}/source_shader.h.in)
 set(HEADER_GENERATOR ${CMAKE_CURRENT_SOURCE_DIR}/StringShaderHeader.cmake)
 
+# Check if `--quiet` is available on host's glslangValidator version
+# glslangValidator prints to STDERR iff an unrecognized flag is passed to it
+execute_process(
+    COMMAND
+        ${GLSLANGVALIDATOR} ${QUIET_FLAG}
+    ERROR_VARIABLE
+        GLSLANG_ERROR
+    # STDOUT variable defined to silence unnecessary output during CMake configuration
+    OUTPUT_VARIABLE
+        GLSLANG_OUTPUT
+)
+
+if (NOT GLSLANG_ERROR STREQUAL "")
+    message(WARNING "Refusing to use unavailable flag `${QUIET_FLAG}` on `${GLSLANGVALIDATOR}`")
+    set(QUIET_FLAG "")
+endif()
+
 foreach(FILENAME IN ITEMS ${SHADER_FILES})
     string(REPLACE "." "_" SHADER_NAME ${FILENAME})
     set(SOURCE_FILE ${CMAKE_CURRENT_SOURCE_DIR}/${FILENAME})
@@ -55,7 +73,7 @@ foreach(FILENAME IN ITEMS ${SHADER_FILES})
             OUTPUT
                 ${SPIRV_HEADER_FILE}
             COMMAND
-                ${GLSLANGVALIDATOR} -V ${GLSL_FLAGS} --variable-name ${SPIRV_VARIABLE_NAME} -o ${SPIRV_HEADER_FILE} ${SOURCE_FILE}
+                ${GLSLANGVALIDATOR} -V ${QUIET_FLAG} ${GLSL_FLAGS} --variable-name ${SPIRV_VARIABLE_NAME} -o ${SPIRV_HEADER_FILE} ${SOURCE_FILE}
             MAIN_DEPENDENCY
                 ${SOURCE_FILE}
         )
diff --git a/src/video_core/host_shaders/opengl_copy_bgra.comp b/src/video_core/host_shaders/opengl_copy_bgra.comp
new file mode 100644
index 000000000..2571a4abf
--- /dev/null
+++ b/src/video_core/host_shaders/opengl_copy_bgra.comp
@@ -0,0 +1,15 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#version 430 core
+
+layout (local_size_x = 4, local_size_y = 4) in;
+
+layout(binding = 0, rgba8) readonly uniform image2DArray bgr_input;
+layout(binding = 1, rgba8) writeonly uniform image2DArray bgr_output;
+
+void main() {
+    vec4 color = imageLoad(bgr_input, ivec3(gl_GlobalInvocationID));
+    imageStore(bgr_output, ivec3(gl_GlobalInvocationID), color.bgra);
+}
diff --git a/src/video_core/host_shaders/vulkan_quad_array.comp b/src/video_core/host_shaders/vulkan_quad_array.comp
deleted file mode 100644
index 212f4e998..000000000
--- a/src/video_core/host_shaders/vulkan_quad_array.comp
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2019 yuzu Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#version 460 core
-
-layout (local_size_x = 1024) in;
-
-layout (std430, set = 0, binding = 0) buffer OutputBuffer {
-    uint output_indexes[];
-};
-
-layout (push_constant) uniform PushConstants {
-    uint first;
-};
-
-void main() {
-    uint primitive = gl_GlobalInvocationID.x;
-    if (primitive * 6 >= output_indexes.length()) {
-        return;
-    }
-
-    const uint quad_map[6] = uint[](0, 1, 2, 0, 2, 3);
-    for (uint vertex = 0; vertex < 6; ++vertex) {
-        uint index = first + primitive * 4 + quad_map[vertex];
-        output_indexes[primitive * 6 + vertex] = index;
-    }
-}
diff --git a/src/video_core/host_shaders/vulkan_uint8.comp b/src/video_core/host_shaders/vulkan_uint8.comp
index ad74d7af9..872291670 100644
--- a/src/video_core/host_shaders/vulkan_uint8.comp
+++ b/src/video_core/host_shaders/vulkan_uint8.comp
@@ -16,9 +16,16 @@ layout (std430, set = 0, binding = 1) writeonly buffer OutputBuffer {
     uint16_t output_indexes[];
 };
 
+uint AssembleIndex(uint id) {
+    // Most primitive restart indices are 0xFF
+    // Hardcode this to 0xFF for now
+    uint index = uint(input_indexes[id]);
+    return index == 0xFF ? 0xFFFF : index;
+}
+
 void main() {
     uint id = gl_GlobalInvocationID.x;
     if (id < input_indexes.length()) {
-        output_indexes[id] = uint16_t(input_indexes[id]);
+        output_indexes[id] = uint16_t(AssembleIndex(id));
     }
 }