Normals - Revision history

Vegard: add link

2020-02-24T13:51:03Z

add link

← Older revision		Revision as of 13:51, 24 February 2020
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	}		}
	</source>		</source>

			=== See also ===

			* https://medium.com/@bgolus/generating-perfect-normal-maps-for-unity-f929e673fc57 {{TODO\|expand}}

	[[Category:Graphics programming]]		[[Category:Graphics programming]]

Vegard: /* dFdx/dFdy */

2020-01-28T09:24:25Z

dFdx/dFdy

← Older revision		Revision as of 09:24, 28 January 2020
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	== dFdx/dFdy ==		== dFdx/dFdy method ==

	You can calculate normals in the fragment shader without passing any vertex normals either to or from the vertex shader. However, that these normals will not interpolate across faces.		You can calculate normals in the fragment shader without passing any vertex normals either to or from the vertex shader. However, that these normals will not interpolate across faces.

Vegard: /* dFdx/dFdy */

2020-01-28T09:24:11Z

dFdx/dFdy

← Older revision		Revision as of 09:24, 28 January 2020
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	== dFdx/dFdy ==		== dFdx/dFdy ==

			You can calculate normals in the fragment shader without passing any vertex normals either to or from the vertex shader. However, that these normals will not interpolate across faces.

	<source lang="GLSL">		<source lang="GLSL">

Vegard: new page

2020-01-25T19:27:21Z

new page

New page

== dFdx/dFdy ==

<source lang="GLSL">
in vec3 vertex_coord;

// https://community.khronos.org/t/getting-the-normal-with-dfdx-and-dfdy/70177
// http://web.archive.org/web/20120302100158/http://athile.net/library/blog/?tag=dfdx
vec3 normal()
{
vec3 x = dFdx(vertex_coord);
vec3 y = dFdy(vertex_coord);
return normalize(cross(x, y));
}
</source>

[[Category:Graphics programming]]