blender-archive/source/blender/gpu/shaders/gpu_shader_checker_frag.glsl

#ifndef USE_GPU_SHADER_CREATE_INFO
uniform vec4 color1;
uniform vec4 color2;
uniform int size;

out vec4 fragColor;
#endif

void main()
{
  vec2 phase = mod(gl_FragCoord.xy, (size * 2));

  if ((phase.x > size && phase.y < size) || (phase.x < size && phase.y > size)) {
    fragColor = color1;
  }
  else {
    fragColor = color2;
  }
}
GPUShaderCreateInfo for interface abstraction This is a first part of the Shader Create Info system could be. A shader create info provides a way to define shader structure, resources and interfaces. This makes for a quick way to provide backend agnostic binding informations while also making shader variations easy to declare. - Clear source input (only one file). Cleans up the GPU api since we can create a shader from one descriptor - Resources and interfaces are generated by the backend (much simpler than parsing). - Bindings are explicit from position in the array. - GPUShaderInterface becomes a trivial translation of enums and string copy. - No external dependency to third party lib. - Cleaner code, less fragmentation of resources in several libs. - Easy to modify / extend at runtime. - no parser involve, very easy to code. - Does not hold any data, can be static and kept on disc. - Could hold precompiled bytecode for static shaders. This also includes a new global dependency system. GLSL shaders can include other sources by using #pragma BLENDER_REQUIRE(...). This patch already migrated several builtin shaders. Other shaders should be migrated one at a time, and could be done inside master. There is a new compile directive `WITH_GPU_SHADER_BUILDER` this is an optional directive for linting shaders to increase turn around time. What is remaining: - pyGPU API {T94975} - Migration of other shaders. This could be a community effort. Reviewed By: jbakker Maniphest Tasks: T94975 Differential Revision: https://developer.blender.org/D13360 2022-01-17 14:32:03 +01:00			`#ifndef USE_GPU_SHADER_CREATE_INFO`
OpenGL immediate mode: interface_draw.c (cont) ui_draw_but_COLORBAND Introduced a new checker shader to be used mostly on transparent areas. OpenGL immediate mode: interface_draw.c (cont) ui_draw_but_UNITVEC Introduced a new shader to be used for simple lighting. 2017-02-07 13:04:08 +01:00			`uniform vec4 color1;`
			`uniform vec4 color2;`
			`uniform int size;`

Cleanup: remove GLSL version checks 2017-05-17 10:46:42 +10:00			`out vec4 fragColor;`
GPUShaderCreateInfo for interface abstraction This is a first part of the Shader Create Info system could be. A shader create info provides a way to define shader structure, resources and interfaces. This makes for a quick way to provide backend agnostic binding informations while also making shader variations easy to declare. - Clear source input (only one file). Cleans up the GPU api since we can create a shader from one descriptor - Resources and interfaces are generated by the backend (much simpler than parsing). - Bindings are explicit from position in the array. - GPUShaderInterface becomes a trivial translation of enums and string copy. - No external dependency to third party lib. - Cleaner code, less fragmentation of resources in several libs. - Easy to modify / extend at runtime. - no parser involve, very easy to code. - Does not hold any data, can be static and kept on disc. - Could hold precompiled bytecode for static shaders. This also includes a new global dependency system. GLSL shaders can include other sources by using #pragma BLENDER_REQUIRE(...). This patch already migrated several builtin shaders. Other shaders should be migrated one at a time, and could be done inside master. There is a new compile directive `WITH_GPU_SHADER_BUILDER` this is an optional directive for linting shaders to increase turn around time. What is remaining: - pyGPU API {T94975} - Migration of other shaders. This could be a community effort. Reviewed By: jbakker Maniphest Tasks: T94975 Differential Revision: https://developer.blender.org/D13360 2022-01-17 14:32:03 +01:00			`#endif`
OpenGL immediate mode: interface_draw.c (cont) ui_draw_but_COLORBAND Introduced a new checker shader to be used mostly on transparent areas. OpenGL immediate mode: interface_draw.c (cont) ui_draw_but_UNITVEC Introduced a new shader to be used for simple lighting. 2017-02-07 13:04:08 +01:00
			`void main()`
			`{`
			`vec2 phase = mod(gl_FragCoord.xy, (size * 2));`

			`if ((phase.x > size && phase.y < size) \|\| (phase.x < size && phase.y > size)) {`
			`fragColor = color1;`
			`}`
			`else {`
			`fragColor = color2;`
			`}`
			`}`