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Diffstat (limited to 'bgfx/effects/misc/blit.json')
-rw-r--r-- | bgfx/effects/misc/blit.json | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/bgfx/effects/misc/blit.json b/bgfx/effects/misc/blit.json new file mode 100644 index 00000000000..3fb849a1eed --- /dev/null +++ b/bgfx/effects/misc/blit.json @@ -0,0 +1,121 @@ +// license:BSD-3-Clause +// copyright-holders:Ryan Holtz +//============================================================ +// +// blit.json: A simple texture-to-target copy. +// +//============================================================ +{ + // blend (required): The blend state for this effect. + "blend": { + // equation (optional): What equation to perform on the source and destination blend values. + // values: "add", "sub", "revSub", "min", "max" + // default: "add" + // + // "subtract" and "revSubtract" are provided as aliases for "sub" and "revSub" + "equation": "add", + + // blend function parameters (optional): What factors to use in the blend function when calculating the final pixel. + // values: "0", "1", "srccolor", "1-srccolor", "dstcolor", "1-dstcolor", "srcalpha", "1-srcalpha", "dstalpha", "1-dstalpha" + // defaults (srcColor, srcAlpha): "1" + // defaults (dstColor, dstAlpha): "0" + // + // "zero", "one", "invsrccolor", "invdstcolor", "invsrcalpha", and "invdstalpha" are provided as aliases for "0", "1", "1-srccolor", "1-dstcolor", "1-srcalpha", and "1-dstalpha" + "srcColor": "srcalpha", + "dstColor": "1-srcalpha", + "srcAlpha": "srcalpha", + "dstAlpha": "1-srcalpha" + }, + + // depth (required): The depth state for this effect. + "depth": { + // function (optional): The depth function to use when drawing. + // values: "never", "less", "equal", "lequal", "greater", "notequal", "gequal", "always" + // default: "always" + "function": "always", + + // writeenable (optional): Whether to store Z-buffer data. + // values: true, false + // default: false + "writeenable": false + }, + + // cull (required): The cull mode for this effect. + "cull": { + // mode (optional): What winding, if any, to cull. + // values: "none", "cw", "ccw" + // default: "ccw" + // + // "clockwise" and "counterclockwise" are provided as aliases for "cw" and "ccw" + "mode": "none" + }, + + // write (required): Write enable for color and alpha channels. + "write": { + // rgb (optional): Whether to store color data when drawing. + // values: true, false + // default: false + "rgb": true, + + // alpha (optional): Whether to store alpha data when drawing. + // values: true, false + // default: false + "alpha": true + }, + + // vertex (required): The vertex shader to use when drawing. + // value: A string containing the path and name of a shader file to use, minus the extension. + "vertex": "chains/misc/vs_blit", + + // pixel/fragment (required): The pixel or fragment shader to use when drawing. + // value: A string containing the path and name of a shader file to use, minus the extension. + "fragment": "chains/misc/fs_blit", + + // uniforms (required): The list of uniforms for this effect. Can be empty, but must exist. + "uniforms": [ + { + // name (required): The name of the uniform, as used in either the vertex or pixel/fragment shader. + // value: A string containing the name of the uniform as described above. + // + // NOTE: Some names correspond to special values that will be automatically filled by the BGFX + // code if they are used by the shader. These names are: + // "u_screen_dims" + // The dimensions of the first texture input if present, otherwise the dimensions of the output window. + // Valid values: xy + // "u_inv_screen_dims" + // The reciprocal of u_screen_dims. + // Valid values: xy + // "u_source_dims" + // The size, in pixels, of the screen texture incoming to the chain. + // Valid values: xy + // "u_rotation_type" + // This screen's rotation type. 0 if ROT0, 1 if ROT90, 2 if ROT180, 3 of ROT270. + // Valid values: x + // "u_swap_xy" + // Whether this screen is swapped on the X and Y axes. 1 if true, 0 if false. + // Valid values: x + // "u_quad_dims" + // The dimensions, in pixels, occupied by this one screen primitive itself in the output window. + // Valid values: xy + // "u_tex_sizeN" + // The dimensions, in pixels, of the texture in input pair N. Starts at 0. + // valid values: xy + "name": "s_tex", + + // type (required): The type of the uniform. + // values: "int", "vec4", "mat3", "mat4" + // + // Note: "int" should only be used for samplers. + "type": "int", + + // values (required): The array of numbers with which to initialize the uniform. + // value: A JSON array containin the correct amount of numbers to initialize a uniform of the + // above-specified type. The following size rules should be followed: + // "int": 1 float + // "vec4": 4 floats + // "mat3": 9 floats + // "mat4": 16 floats + "values": [ 1.0 ] + } + ] +}
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