diff options
| author | Kenneth Graunke <[email protected]> | 2018-10-07 20:47:21 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2019-02-21 10:26:09 -0800 |
| commit | bfbebbaa366152d4804d400715afa58d68af084f (patch) | |
| tree | 1aafb00eb39d2d44518e6361210d4588e7060453 /src | |
| parent | 94569a645837df895e889c7e451e35b8e31556fd (diff) | |
iris: Use R/RG instead of I/L/A when sampling
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/iris/iris_formats.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/gallium/drivers/iris/iris_formats.c b/src/gallium/drivers/iris/iris_formats.c index 2c726cb5fde..290b65880a1 100644 --- a/src/gallium/drivers/iris/iris_formats.c +++ b/src/gallium/drivers/iris/iris_formats.c @@ -400,6 +400,26 @@ iris_isl_format_for_pipe_format(enum pipe_format pf) return table[pf]; } +static enum pipe_format +alpha_to_red(enum pipe_format pf) +{ + switch (pf) { + case PIPE_FORMAT_A8_UNORM: return PIPE_FORMAT_R8_UNORM; + case PIPE_FORMAT_A16_UNORM: return PIPE_FORMAT_R16_UNORM; + case PIPE_FORMAT_A8_SNORM: return PIPE_FORMAT_R8_SNORM; + case PIPE_FORMAT_A16_SNORM: return PIPE_FORMAT_R16_SNORM; + case PIPE_FORMAT_A16_FLOAT: return PIPE_FORMAT_R16_FLOAT; + case PIPE_FORMAT_A32_FLOAT: return PIPE_FORMAT_R32_FLOAT; + case PIPE_FORMAT_A8_UINT: return PIPE_FORMAT_A8_UINT; + case PIPE_FORMAT_A8_SINT: return PIPE_FORMAT_A8_SINT; + case PIPE_FORMAT_A16_UINT: return PIPE_FORMAT_R16_UINT; + case PIPE_FORMAT_A16_SINT: return PIPE_FORMAT_R16_SINT; + case PIPE_FORMAT_A32_UINT: return PIPE_FORMAT_R32_UINT; + case PIPE_FORMAT_A32_SINT: return PIPE_FORMAT_R32_SINT; + default: return pf; + } +} + struct iris_format_info iris_format_for_usage(const struct gen_device_info *devinfo, enum pipe_format pformat, @@ -407,6 +427,17 @@ iris_format_for_usage(const struct gen_device_info *devinfo, { struct isl_swizzle swizzle = ISL_SWIZZLE_IDENTITY; + if ((usage & ISL_SURF_USAGE_TEXTURE_BIT) && !util_format_is_srgb(pformat)) { + if (util_format_is_intensity(pformat)) { + swizzle = ISL_SWIZZLE(RED, RED, RED, RED); + } else if (util_format_is_luminance(pformat)) { + swizzle = ISL_SWIZZLE(RED, RED, RED, ONE); + } else if (util_format_is_alpha(pformat)) { + pformat = alpha_to_red(pformat); + swizzle = ISL_SWIZZLE(ZERO, ZERO, ZERO, RED); + } + } + enum isl_format format = iris_isl_format_for_pipe_format(pformat); /* Convert RGBX into RGBA for rendering or typed image access. */ |