GLSL: Implement 64-bit image support.

reference/shaders-no-opt/vulkan/comp/image-64bit.vk.nocompat.comp.vk

@@ -0,0 +1,22 @@
+#version 450
+#if defined(GL_ARB_gpu_shader_int64)
+#extension GL_ARB_gpu_shader_int64 : require
+#else
+#error No extension available for 64-bit integers.
+#endif
+#extension GL_EXT_shader_image_int64 : require
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+
+layout(set = 0, binding = 0, r64ui) uniform u64image2D uimg;
+layout(set = 0, binding = 1, r64i) uniform i64image2D iimg;
+
+void main()
+{
+    uint64_t uv = imageLoad(uimg, ivec2(gl_GlobalInvocationID.xy + uvec2(50u))).x;
+    int64_t iv = imageLoad(iimg, ivec2(gl_GlobalInvocationID.xy + uvec2(50u))).x;
+    uint64_t _52 = imageAtomicMax(uimg, ivec2(gl_GlobalInvocationID.xy), uv);
+    uv = _52;
+    int64_t _59 = imageAtomicMax(iimg, ivec2(gl_GlobalInvocationID.xy), iv);
+    iv = _59;
+}
+

shaders-no-opt/vulkan/comp/image-64bit.vk.nocompat.comp

@@ -0,0 +1,16 @@
+#version 450
+#extension GL_ARB_gpu_shader_int64 : require
+#extension GL_EXT_shader_image_int64 : require
+layout(local_size_x = 1) in;
+
+layout(set = 0, binding = 0, r64ui) uniform u64image2D uimg;
+layout(set = 0, binding = 1, r64i) uniform i64image2D iimg;
+
+void main()
+{
+	uint64_t uv = imageLoad(uimg, ivec2(gl_GlobalInvocationID.xy + 50)).x;
+	int64_t iv = imageLoad(iimg, ivec2(gl_GlobalInvocationID.xy + 50)).x;
+
+	uv = imageAtomicMax(uimg, ivec2(gl_GlobalInvocationID.xy), uv);
+	iv = imageAtomicMax(iimg, ivec2(gl_GlobalInvocationID.xy), iv);
+}

spirv_glsl.cpp

@@ -1486,6 +1486,10 @@ const char *CompilerGLSL::format_to_glsl(spv::ImageFormat format)
 		return "rg8i";
 	case ImageFormatR16i:
 		return "r16i";
+	case ImageFormatR64i:
+		return "r64i";
+	case ImageFormatR64ui:
+		return "r64ui";
 	default:
 	case ImageFormatUnknown:
 		return nullptr;
@@ -15345,6 +15349,14 @@ string CompilerGLSL::image_type_glsl(const SPIRType &type, uint32_t id)
 
 	switch (imagetype.basetype)
 	{
+	case SPIRType::Int64:
+		res = "i64";
+		require_extension_internal("GL_EXT_shader_image_int64");
+		break;
+	case SPIRType::UInt64:
+		res = "u64";
+		require_extension_internal("GL_EXT_shader_image_int64");
+		break;
 	case SPIRType::Int:
 	case SPIRType::Short:
 	case SPIRType::SByte: