Add support for 8- and 16-bit types to GLSL and MSL.

In GLSL, 8-bit types require GL_EXT_shader_8bit_storage. 16-bit types
can use either GL_AMD_gpu_shader_int16/GL_AMD_gpu_shader_half_float or
GL_EXT_shader_16bit_storage.

2 files changed, 122 insertions, 0 deletions

diff --git a/reference/opt/shaders/vulkan/vert/small-storage.vk.vert b/reference/opt/shaders/vulkan/vert/small-storage.vk.vert
new file mode 100644
index 00000000..ba95f700
--- /dev/null
+++ b/reference/opt/shaders/vulkan/vert/small-storage.vk.vert
@@ -0,0 +1,63 @@
+#version 450
+#if defined(GL_AMD_gpu_shader_int16)
+#extension GL_AMD_gpu_shader_int16 : require
+#elif defined(GL_EXT_shader_16bit_storage)
+#extension GL_EXT_shader_16bit_storage : require
+#else
+#error No extension available for Int16.
+#endif
+#extension GL_EXT_shader_8bit_storage : require
+#if defined(GL_AMD_gpu_shader_half_float)
+#extension GL_AMD_gpu_shader_half_float : require
+#elif defined(GL_NV_gpu_shader5)
+#extension GL_NV_gpu_shader5 : require
+#elif defined(GL_EXT_shader_16bit_storage)
+#extension GL_EXT_shader_16bit_storage : require
+#else
+#error No extension available for FP16.
+#endif
+
+layout(binding = 0, std140) uniform block
+{
+    layout(offset = 0) i16vec2 a;
+    layout(offset = 4) u16vec2 b;
+    layout(offset = 8) i8vec2 c;
+    layout(offset = 10) u8vec2 d;
+    layout(offset = 12) f16vec2 e;
+} _26;
+
+layout(binding = 1, std140) readonly buffer storage
+{
+    layout(offset = 0) i16vec3 f;
+    layout(offset = 8) u16vec3 g;
+    layout(offset = 16) i8vec3 h;
+    layout(offset = 20) u8vec3 i;
+    layout(offset = 24) f16vec3 j;
+} _53;
+
+struct pushconst
+{
+    i16vec4 k;
+    u16vec4 l;
+    i8vec4 m;
+    u8vec4 n;
+    f16vec4 o;
+};
+
+uniform pushconst _76;
+
+layout(location = 0) out i16vec4 p;
+layout(location = 0, component = 0) in int16_t foo;
+layout(location = 1) out u16vec4 q;
+layout(location = 0, component = 1) in uint16_t bar;
+layout(location = 2) out f16vec4 r;
+layout(location = 1) in float16_t baz;
+
+void main()
+{
+    p = i16vec4((((ivec4(int(foo)) + ivec4(ivec2(_26.a), ivec2(_26.c))) - ivec4(ivec3(_53.f) / ivec3(_53.h), 1)) + ivec4(_76.k)) + ivec4(_76.m));
+    q = u16vec4((((uvec4(uint(bar)) + uvec4(uvec2(_26.b), uvec2(_26.d))) - uvec4(uvec3(_53.g) / uvec3(_53.i), 1u)) + uvec4(_76.l)) + uvec4(_76.n));
+    r = f16vec4(((vec4(float(baz)) + vec4(vec2(_26.e), 0.0, 1.0)) - vec4(vec3(_53.j), 1.0)) + vec4(_76.o));
+    gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
+}
+
diff --git a/reference/opt/shaders/vulkan/vert/small-storage.vk.vert.vk b/reference/opt/shaders/vulkan/vert/small-storage.vk.vert.vk
new file mode 100644
index 00000000..0950eaff
--- /dev/null
+++ b/reference/opt/shaders/vulkan/vert/small-storage.vk.vert.vk
@@ -0,0 +1,59 @@
+#version 450
+#if defined(GL_AMD_gpu_shader_int16)
+#extension GL_AMD_gpu_shader_int16 : require
+#elif defined(GL_EXT_shader_16bit_storage)
+#extension GL_EXT_shader_16bit_storage : require
+#else
+#error No extension available for Int16.
+#endif
+#extension GL_EXT_shader_8bit_storage : require
+#if defined(GL_AMD_gpu_shader_half_float)
+#extension GL_AMD_gpu_shader_half_float : require
+#elif defined(GL_EXT_shader_16bit_storage)
+#extension GL_EXT_shader_16bit_storage : require
+#else
+#error No extension available for FP16.
+#endif
+
+layout(set = 0, binding = 0, std140) uniform block
+{
+    layout(offset = 0) i16vec2 a;
+    layout(offset = 4) u16vec2 b;
+    layout(offset = 8) i8vec2 c;
+    layout(offset = 10) u8vec2 d;
+    layout(offset = 12) f16vec2 e;
+} _26;
+
+layout(set = 0, binding = 1, std140) readonly buffer storage
+{
+    layout(offset = 0) i16vec3 f;
+    layout(offset = 8) u16vec3 g;
+    layout(offset = 16) i8vec3 h;
+    layout(offset = 20) u8vec3 i;
+    layout(offset = 24) f16vec3 j;
+} _53;
+
+layout(push_constant, std140) uniform pushconst
+{
+    layout(offset = 0) i16vec4 k;
+    layout(offset = 8) u16vec4 l;
+    layout(offset = 16) i8vec4 m;
+    layout(offset = 20) u8vec4 n;
+    layout(offset = 24) f16vec4 o;
+} _76;
+
+layout(location = 0) out i16vec4 p;
+layout(location = 0, component = 0) in int16_t foo;
+layout(location = 1) out u16vec4 q;
+layout(location = 0, component = 1) in uint16_t bar;
+layout(location = 2) out f16vec4 r;
+layout(location = 1) in float16_t baz;
+
+void main()
+{
+    p = i16vec4((((ivec4(int(foo)) + ivec4(ivec2(_26.a), ivec2(_26.c))) - ivec4(ivec3(_53.f) / ivec3(_53.h), 1)) + ivec4(_76.k)) + ivec4(_76.m));
+    q = u16vec4((((uvec4(uint(bar)) + uvec4(uvec2(_26.b), uvec2(_26.d))) - uvec4(uvec3(_53.g) / uvec3(_53.i), 1u)) + uvec4(_76.l)) + uvec4(_76.n));
+    r = f16vec4(((vec4(float(baz)) + vec4(vec2(_26.e), 0.0, 1.0)) - vec4(vec3(_53.j), 1.0)) + vec4(_76.o));
+    gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
+}
+