diff options
Diffstat (limited to 'drivers/gles3/shaders/stdlib_inc.glsl')
| -rw-r--r-- | drivers/gles3/shaders/stdlib_inc.glsl | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/gles3/shaders/stdlib_inc.glsl b/drivers/gles3/shaders/stdlib_inc.glsl index d5051760d7..8d4a24cc1f 100644 --- a/drivers/gles3/shaders/stdlib_inc.glsl +++ b/drivers/gles3/shaders/stdlib_inc.glsl @@ -38,23 +38,33 @@ vec2 unpackSnorm2x16(uint p) { vec2 v = vec2(float(p & uint(0xffff)), float(p >> uint(16))); return clamp((v - 32767.0) * vec2(0.00003051851), vec2(-1.0), vec2(1.0)); } + #endif -uint packUnorm4x8(vec4 v) { +// Compatibility renames. These are exposed with the "godot_" prefix +// to work around an Adreno bug which was exposing these ES310 functions +// in ES300 shaders. Internally, we must use the "godot_" prefix, but user shaders +// will be mapped automatically. +uint godot_packUnorm4x8(vec4 v) { uvec4 uv = uvec4(round(clamp(v, vec4(0.0), vec4(1.0)) * 255.0)); return uv.x | (uv.y << uint(8)) | (uv.z << uint(16)) | (uv.w << uint(24)); } -vec4 unpackUnorm4x8(uint p) { +vec4 godot_unpackUnorm4x8(uint p) { return vec4(float(p & uint(0xff)), float((p >> uint(8)) & uint(0xff)), float((p >> uint(16)) & uint(0xff)), float(p >> uint(24))) * 0.00392156862; // 1.0 / 255.0 } -uint packSnorm4x8(vec4 v) { +uint godot_packSnorm4x8(vec4 v) { uvec4 uv = uvec4(round(clamp(v, vec4(-1.0), vec4(1.0)) * 127.0) + 127.0); return uv.x | uv.y << uint(8) | uv.z << uint(16) | uv.w << uint(24); } -vec4 unpackSnorm4x8(uint p) { +vec4 godot_unpackSnorm4x8(uint p) { vec4 v = vec4(float(p & uint(0xff)), float((p >> uint(8)) & uint(0xff)), float((p >> uint(16)) & uint(0xff)), float(p >> uint(24))); return clamp((v - vec4(127.0)) * vec4(0.00787401574), vec4(-1.0), vec4(1.0)); } + +#define packUnorm4x8 godot_packUnorm4x8 +#define unpackUnorm4x8 godot_unpackUnorm4x8 +#define packSnorm4x8 godot_packSnorm4x8 +#define unpackSnorm4x8 godot_unpackSnorm4x8 |