Loading...

Type: Bug
Resolution: Unresolved
Priority: Not Evaluated
Fix Version/s: None
Affects Version/s: 6.9.2
Component/s: Qt Shader Tools
Labels:
None
Environment:
Windows 11, VS 2022
macOS 26, xCode 26
Qt Creator 17

Platform/s:

All

Given is the following shader:

#version 450

#ifdef QSHADER_GLSL
layout(location = 0) in vec2 a_pos;
#else
layout(location = 0) in ivec2 a_pos_int;
#endif

layout(binding = 0) uniform Locals {
    mat4 u_mvp;
    vec4 u_color;
    vec2 u_scale;
};

void main() {
#ifdef QSHADER_GLSL
    // no op
#else
    vec2 a_pos = vec2(a_pos_int);
#endif
    gl_Position = u_mvp * vec4(a_pos, 0.0, 1.0);
}

cmake

qt6_add_shaders(appbasis "vtm_uniform_shaders"
	PERTARGETCOMPILE
	GLSL_DEFINES "QSHADER_GLSL=true"
	#DEFINES "QSHADER_GLSL=true"
	FILES
		vtm/shaders/uniform/base_shader.vert
)

``qbs --dump`` version 1:

Stage: Vertex
QSB_VERSION: 9
Has 6 shaders:
  Shader 0: SPIR-V 100 [Standard]
  Shader 1: GLSL 100 es [Standard]
  Shader 2: GLSL 120 [Standard]
  Shader 3: GLSL 150 [Standard]
  Shader 4: HLSL 50 [Standard]
  Shader 5: MSL 12 [Standard]

Reflection info: {
    "inputs": [
        {
            "location": 0,
            "name": "a_pos_int",
            "type": "ivec2"
        }
    ],
    "outBuiltins": [
        {
            "name": "Position",
            "type": "vec4"
        }
    ],
    "uniformBlocks": [
        {
            "binding": 0,
            "blockName": "Locals",
            "members": [
                {
                    "matrixStride": 16,
                    "name": "u_mvp",
                    "offset": 0,
                    "size": 64,
                    "type": "mat4"
                },
                {
                    "name": "u_color",
                    "offset": 64,
                    "size": 16,
                    "type": "vec4"
                },
                {
                    "name": "u_scale",
                    "offset": 80,
                    "size": 8,
                    "type": "vec2"
                }
            ],
            "set": 0,
            "size": 88,
            "structName": "_27"
        }
    ]
}


Shader 0: SPIR-V 100 [Standard]
Entry point: main
Contents:
Binary of 1004 bytes


************************************

Shader 1: GLSL 100 es [Standard]
Entry point: main
Contents:
#version 100

struct Locals
{
    mat4 u_mvp;
    vec4 u_color;
    vec2 u_scale;
};

uniform Locals _20;

attribute vec2 a_pos;

void main()
{
    gl_Position = _20.u_mvp * vec4(a_pos, 0.0, 1.0);
}



************************************

Shader 2: GLSL 120 [Standard]
Entry point: main
Contents:
#version 120

struct Locals
{
    mat4 u_mvp;
    vec4 u_color;
    vec2 u_scale;
};

uniform Locals _20;

attribute vec2 a_pos;

void main()
{
    gl_Position = _20.u_mvp * vec4(a_pos, 0.0, 1.0);
}



************************************

Shader 3: GLSL 150 [Standard]
Entry point: main
Contents:
#version 150

struct Locals
{
    mat4 u_mvp;
    vec4 u_color;
    vec2 u_scale;
};

uniform Locals _20;

in vec2 a_pos;

void main()
{
    gl_Position = _20.u_mvp * vec4(a_pos, 0.0, 1.0);
}



************************************

Shader 4: HLSL 50 [Standard]
Entry point: main
Native resource binding map:
0 -> [0, -1]
Contents:
cbuffer Locals : register(b0)
{
    row_major float4x4 _27_u_mvp : packoffset(c0);
    float4 _27_u_color : packoffset(c4);
    float2 _27_u_scale : packoffset(c5);
};


static float4 gl_Position;
static int2 a_pos_int;

struct SPIRV_Cross_Input
{
    int2 a_pos_int : TEXCOORD0;
};

struct SPIRV_Cross_Output
{
    float4 gl_Position : SV_Position;
};

void vert_main()
{
    float2 a_pos = float2(a_pos_int);
    gl_Position = mul(float4(a_pos, 0.0f, 1.0f), _27_u_mvp);
}

SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
{
    a_pos_int = stage_input.a_pos_int;
    vert_main();
    SPIRV_Cross_Output stage_output;
    stage_output.gl_Position = gl_Position;
    return stage_output;
}


************************************

Shader 5: MSL 12 [Standard]
Entry point: main0
Native resource binding map:
0 -> [0, -1]
Contents:
#include <metal_stdlib>
#include <simd/simd.h>

using namespace metal;

struct Locals
{
    float4x4 u_mvp;
    float4 u_color;
    float2 u_scale;
};

struct main0_out
{
    float4 gl_Position [[position]];
};

struct main0_in
{
    int2 a_pos_int [[attribute(0)]];
};

vertex main0_out main0(main0_in in [[stage_in]], constant Locals& _27 [[buffer(0)]])
{
    main0_out out = {};
    float2 a_pos = float2(in.a_pos_int);
    out.gl_Position = _27.u_mvp * float4(a_pos, 0.0, 1.0);
    return out;
}



************************************

``qbs --dump`` version 2:

Stage: Vertex
QSB_VERSION: 9
Has 6 shaders:
  Shader 0: SPIR-V 100 [Standard]
  Shader 1: GLSL 100 es [Standard]
  Shader 2: GLSL 120 [Standard]
  Shader 3: GLSL 150 [Standard]
  Shader 4: HLSL 50 [Standard]
  Shader 5: MSL 12 [Standard]

Reflection info: {
    "inputs": [
        {
            "location": 0,
            "name": "a_pos",
            "type": "vec2"
        }
    ],
    "outBuiltins": [
        {
            "name": "Position",
            "type": "vec4"
        }
    ],
    "uniformBlocks": [
        {
            "binding": 0,
            "blockName": "Locals",
            "members": [
                {
                    "matrixStride": 16,
                    "name": "u_mvp",
                    "offset": 0,
                    "size": 64,
                    "type": "mat4"
                },
                {
                    "name": "u_color",
                    "offset": 64,
                    "size": 16,
                    "type": "vec4"
                },
                {
                    "name": "u_scale",
                    "offset": 80,
                    "size": 8,
                    "type": "vec2"
                }
            ],
            "set": 0,
            "size": 88,
            "structName": "_20"
        }
    ]
}


Shader 0: SPIR-V 100 [Standard]
Entry point: main
Contents:
Binary of 1004 bytes


************************************

Shader 1: GLSL 100 es [Standard]
Entry point: main
Contents:
#version 100

struct Locals
{
    mat4 u_mvp;
    vec4 u_color;
    vec2 u_scale;
};

uniform Locals _20;

attribute vec2 a_pos;

void main()
{
    gl_Position = _20.u_mvp * vec4(a_pos, 0.0, 1.0);
}



************************************

Shader 2: GLSL 120 [Standard]
Entry point: main
Contents:
#version 120

struct Locals
{
    mat4 u_mvp;
    vec4 u_color;
    vec2 u_scale;
};

uniform Locals _20;

attribute vec2 a_pos;

void main()
{
    gl_Position = _20.u_mvp * vec4(a_pos, 0.0, 1.0);
}



************************************

Shader 3: GLSL 150 [Standard]
Entry point: main
Contents:
#version 150

struct Locals
{
    mat4 u_mvp;
    vec4 u_color;
    vec2 u_scale;
};

uniform Locals _20;

in vec2 a_pos;

void main()
{
    gl_Position = _20.u_mvp * vec4(a_pos, 0.0, 1.0);
}



************************************

Shader 4: HLSL 50 [Standard]
Entry point: main
Native resource binding map:
0 -> [0, -1]
Contents:
cbuffer Locals : register(b0)
{
    row_major float4x4 _27_u_mvp : packoffset(c0);
    float4 _27_u_color : packoffset(c4);
    float2 _27_u_scale : packoffset(c5);
};


static float4 gl_Position;
static int2 a_pos_int;

struct SPIRV_Cross_Input
{
    int2 a_pos_int : TEXCOORD0;
};

struct SPIRV_Cross_Output
{
    float4 gl_Position : SV_Position;
};

void vert_main()
{
    float2 a_pos = float2(a_pos_int);
    gl_Position = mul(float4(a_pos, 0.0f, 1.0f), _27_u_mvp);
}

SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
{
    a_pos_int = stage_input.a_pos_int;
    vert_main();
    SPIRV_Cross_Output stage_output;
    stage_output.gl_Position = gl_Position;
    return stage_output;
}


************************************

Shader 5: MSL 12 [Standard]
Entry point: main0
Native resource binding map:
0 -> [0, -1]
Contents:
#include <metal_stdlib>
#include <simd/simd.h>

using namespace metal;

struct Locals
{
    float4x4 u_mvp;
    float4 u_color;
    float2 u_scale;
};

struct main0_out
{
    float4 gl_Position [[position]];
};

struct main0_in
{
    int2 a_pos_int [[attribute(0)]];
};

vertex main0_out main0(main0_in in [[stage_in]], constant Locals& _27 [[buffer(0)]])
{
    main0_out out = {};
    float2 a_pos = float2(in.a_pos_int);
    out.gl_Position = _27.u_mvp * float4(a_pos, 0.0, 1.0);
    return out;
}



************************************

``qt6_add_shaders``/``qbs`` seems to randomly generate one of these two versions (notice the different "Reflection info" entries). The problem is that the QRhi OpenGL backend works only with version 2 (Vulkan, DirectX, Metal seem to ignore this).

- Issue Only
- Show All Reviews
- Show Open Reviews

No reviews matched the request. Check your Options in the drop-down menu of this sections header.

Details

Description

Attachments

Gerrit Reviews

Activity

People

Dates

Gerrit Reviews