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gpu/internal/shaders: generate shader variants

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We're about to add Direct3D support, where shaders are written in
HLSL. Rather than write shaders twice (or more), convert them to
a GLSL variant understood by the glslcc cross-compiler and generate
the OpenGL ES 2.0 and HLSL variants. The HLSL is used by a future
change.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2020-02-16 21:53:19 +01:00
parent 1f43bfa0e4
commit ac7029fa24
15 changed files with 1263 additions and 301 deletions
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gpu/gl/backend.go
+2 -2
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@@ -284,8 +284,8 @@ func (b *Backend) DepthFunc(f gpu.DepthFunc) {
b.funcs.DepthFunc(glfunc)
}
func (b *Backend) NewProgram(vssrc, fssrc string, attr []string) (gpu.Program, error) {
p, err := CreateProgram(b.funcs, vssrc, fssrc, attr)
func (b *Backend) NewProgram(vssrc, fssrc gpu.ShaderSources, attr []string) (gpu.Program, error) {
p, err := CreateProgram(b.funcs, vssrc.GLES2, fssrc.GLES2, attr)
if err != nil {
return nil, err
}