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1 # required to link the GLSL compiler
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2 {.passl: "-Lthirdparty/glslang/lib/" .}
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3 {.passl: "-Lthirdparty/spirv-tools/lib/" .}
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4
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5 {.passl: "-lglslang" .}
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6 {.passl: "-lglslang-default-resource-limits" .}
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7 {.passl: "-lHLSL" .}
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8 {.passl: "-lMachineIndependent" .}
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9 {.passl: "-lGenericCodeGen" .}
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10 {.passl: "-lOSDependent" .}
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11 {.passl: "-lOGLCompiler" .}
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12 {.passl: "-lSPIRV" .}
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13 {.passl: "-lSPIRV-Tools-opt" .}
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14
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15 {.passl: "-lSPIRV-Tools" .}
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16 {.passl: "-lSPIRV-Tools-diff" .}
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17 {.passl: "-lSPIRV-Tools-fuzz" .}
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18 {.passl: "-lSPIRV-Tools-link" .}
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19 {.passl: "-lSPIRV-Tools-lint" .}
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20 {.passl: "-lSPIRV-Tools-opt" .}
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21 {.passl: "-lSPIRV-Tools-reduce" .}
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22
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23 {.passl: "-lstdc++" .}
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24 {.passl: "-lm" .}
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25
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26 import glslang_c_interface
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27 import glslang_c_shader_types
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28
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29
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30 proc compileShaderToSPIRV_Vulkan*(stage: glslang_stage_t , shaderSource: string, fileName: string): seq[uint32] =
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31 var input = glslang_input_t(
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32 language: GLSLANG_SOURCE_GLSL,
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33 stage: stage,
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34 client: GLSLANG_CLIENT_VULKAN,
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35 client_version: GLSLANG_TARGET_VULKAN_1_2,
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36 target_language: GLSLANG_TARGET_SPV,
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37 target_language_version: GLSLANG_TARGET_SPV_1_5,
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38 code: shaderSource,
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39 default_version: 100,
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40 default_profile: GLSLANG_NO_PROFILE,
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41 force_default_version_and_profile: false.cint,
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42 forward_compatible: false.cint,
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43 messages: GLSLANG_MSG_DEFAULT_BIT,
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44 resource: glslang_default_resource(),
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45 )
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46
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47 let shader = glslang_shader_create(addr(input))
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48
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49 if not bool(glslang_shader_preprocess(shader, addr(input))):
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50 echo "GLSL preprocessing failed " & fileName
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51 echo glslang_shader_get_info_log(shader)
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52 echo glslang_shader_get_info_debug_log(shader)
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53 echo input.code
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54 glslang_shader_delete(shader)
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55 return
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56
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57 if not bool(glslang_shader_parse(shader, addr(input))):
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58 echo "GLSL parsing failed " & fileName
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59 echo glslang_shader_get_info_log(shader)
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60 echo glslang_shader_get_info_debug_log(shader)
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61 echo glslang_shader_get_preprocessed_code(shader)
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62 glslang_shader_delete(shader)
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63 return
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64
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65 let program: ptr glslang_program_t = glslang_program_create()
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66 glslang_program_add_shader(program, shader)
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67
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68 if not bool(glslang_program_link(program, ord(GLSLANG_MSG_SPV_RULES_BIT) or ord(GLSLANG_MSG_VULKAN_RULES_BIT))):
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69 echo "GLSL linking failed " & fileName
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70 echo glslang_program_get_info_log(program)
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71 echo glslang_program_get_info_debug_log(program)
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72 glslang_program_delete(program)
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73 glslang_shader_delete(shader)
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74 return
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75
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76 glslang_program_SPIRV_generate(program, stage)
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77
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78 result = newSeq[uint32](glslang_program_SPIRV_get_size(program))
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79 glslang_program_SPIRV_get(program, addr(result[0]))
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80
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81 var spirv_messages: cstring = glslang_program_SPIRV_get_messages(program)
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82 if spirv_messages != nil:
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83 echo "(%s) %s\b", fileName, spirv_messages
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84
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85 glslang_program_delete(program)
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86 glslang_shader_delete(shader)
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