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app/internal/gpu: use single channel floating point FBO if possible

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Remove dependency on EXT_color_buffer_half_float, it's not clear it's
necessary. In any case the following FBO sanity check will catch invalid
FBO format combinations.

Updates #49

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2019-12-11 13:51:27 +01:00
parent 7164c557f9
commit 8a44ac11d8
1 changed files with 4 additions and 1 deletions
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app/internal/gpu/context.go
+4 -1
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@@ -66,7 +66,10 @@ func floatTripleFor(ctx *context, ver [2]int, exts []string) (textureTriple, err
if ver[0] >= 3 { if ver[0] >= 3 {
triples = append(triples, textureTriple{gl.R16F, gl.Enum(gl.RED), gl.Enum(gl.HALF_FLOAT)}) triples = append(triples, textureTriple{gl.R16F, gl.Enum(gl.RED), gl.Enum(gl.HALF_FLOAT)})
} }
if hasExtension(exts, "GL_OES_texture_half_float") || hasExtension(exts, "EXT_color_buffer_half_float") { if hasExtension(exts, "GL_OES_texture_half_float") {
// Try single channel.
triples = append(triples, textureTriple{gl.LUMINANCE, gl.Enum(gl.LUMINANCE), gl.Enum(gl.HALF_FLOAT_OES)})
// Fallback to 4 channels.
triples = append(triples, textureTriple{gl.RGBA, gl.Enum(gl.RGBA), gl.Enum(gl.HALF_FLOAT_OES)}) triples = append(triples, textureTriple{gl.RGBA, gl.Enum(gl.RGBA), gl.Enum(gl.HALF_FLOAT_OES)})
} }
if hasExtension(exts, "GL_OES_texture_float") || hasExtension(exts, "GL_EXT_color_buffer_float") { if hasExtension(exts, "GL_OES_texture_float") || hasExtension(exts, "GL_EXT_color_buffer_float") {