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Commit Graph

Author	SHA1	Message	Date
Vladimír Vondruš	b5743c9447	TextureTools: ported distanceField() to OpenGL 2.1 and OpenGL ES. * Older GLSL doesn't have texelFetch() and related things, working around it by using classical texture() and normalized floating-point coordinates. But that needs to have Texture::imageSize() passed, which is not available in OpenGL ES, thus the user must specify it explicitly there. On desktop OpenGL that parameter is ignored. * Older GLSL doesn't have gl_VertexID, thus vertex buffer must be created and vertex data passed expliticly. * GLSL ES 2.0 doesn't have one-component texture format and TextureFormat::Luminance probably isn't renderable anywhere, thus TextureFormat::RGB should be used, although it is inefficient. * Checking for framebuffer completeness, if not complete, nothing is done. * Re-eabled building of TextureTools library in all ES PKGBUILDs.	13 years ago
Vladimír Vondruš	c5ab86794b	Relicensing to MIT/Expat license, part 3: source files. Added license header also to shader sources. Hopefully it won't harm compilation times too much.	13 years ago
Vladimír Vondruš	b1a97ed134	TextureTools: initial rude implementation of distance field computation. Not yet ported anywhere else than GL >= 3.3 with some GL 4.3 features. Still, this closes #3.	13 years ago

Author

SHA1

Message

Date

Vladimír Vondruš

b5743c9447

TextureTools: ported distanceField() to OpenGL 2.1 and OpenGL ES.

* Older GLSL doesn't have texelFetch() and related things, working
   around it by using classical texture() and normalized floating-point
   coordinates. But that needs to have Texture::imageSize() passed,
   which is not available in OpenGL ES, thus the user must specify it
   explicitly there. On desktop OpenGL that parameter is ignored.
 * Older GLSL doesn't have gl_VertexID, thus vertex buffer must be
   created and vertex data passed expliticly.
 * GLSL ES 2.0 doesn't have one-component texture format and
   TextureFormat::Luminance probably isn't renderable anywhere, thus
   TextureFormat::RGB should be used, although it is inefficient.
 * Checking  for framebuffer completeness, if not complete, nothing is
   done.
 * Re-eabled building of TextureTools library in all ES PKGBUILDs.

13 years ago

Vladimír Vondruš

c5ab86794b

Relicensing to MIT/Expat license, part 3: source files.

Added license header also to shader sources. Hopefully it won't harm
compilation times too much.

13 years ago

Vladimír Vondruš

b1a97ed134

TextureTools: initial rude implementation of distance field computation.

Not yet ported anywhere else than GL >= 3.3 with some GL 4.3 features.
Still, this closes #3.

13 years ago

3 Commits (475216609762ce4443bd4f9ddc5524db845bd0bf)