to: jsoftware;
Manjaro x86_64 Liunux, j901 and j902 beta.
Error occurs on J901 or J902 beta in the same way. Defining an output
value appears to correct the error.
Solution may only work on Open GL Version 3.00 and greater.
What is the correct way to fix this issue.
Thanks
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1. Error in shader qt demo on Manjaro Linux
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[ed@Josara1 tmp]$ uname -a Linux Josara1 5.6.11-1-MANJARO #1 SMP PREEMPT
Wed May 6 10:20:32 UTC 2020 x86_64 GNU/Linux
JVERSION
Engine: j902/j64avx2/linux
Beta-a: commercial/2020-05-08T16:29:05 clang-8-0-0
Library: 9.02.03
Qt IDE: 1.8.7/5.14.2(5.14.2)
Platform: Linux 64
Installer: J902 install
InstallPath: /home/ed/j902
Contact: www.jsoftware.com
GL_VERSION: 4.6 (Compatibility Profile) Mesa 20.0.6
GL_VENDOR: X.Org
GL_RENDERER: AMD Radeon R9 200 Series (TONGA, DRM 3.36.0,
5.6.11-1-MANJARO, LLVM 10.0.0)
GL_SHADING_LANGUAGE_VERSION: 4.60
#version 460 core
in vec3 vertex;
in vec3 color;
out vec4 v_color;
uniform mat4 mvp;
void main(void)
{
gl_Position = mvp * vec4(vertex,1.0);
v_color = vec4(color,1.0);
}
#version 460 core
in vec4 v_color;
void main(void)
{
gl_FragColor = v_color;
}
0:5(2): error: `gl_FragColor' undeclared
0:5(2): error: value of type vec4 cannot be assigned to variable of type
error
#version 460 core
in vec4 v_color;
void main(void)
{
gl_FragColor = v_color;
}
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2. Defining an output value in the shader appears to correct the error.
GL_VERSION: 4.6 (Compatibility Profile) Mesa 20.0.6
GL_VENDOR: X.Org
GL_RENDERER: AMD Radeon R9 200 Series (TONGA, DRM 3.36.0,
5.6.11-1-MANJARO, LLVM 10.0.0)
GL_SHADING_LANGUAGE_VERSION: 4.60
#version 460 core
in vec3 vertex;
in vec3 color;
out vec4 v_color;
uniform mat4 mvp;
void main(void)
{
gl_Position = mvp * vec4(vertex,1.0);
v_color = vec4(color,1.0);
}
#version 460 core
in vec4 v_color;
out vec4 FragColor;
void main(void)
{
FragColor = v_color;
}
Thanks
Ed Deveaux
[email protected]
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