diff options
Diffstat (limited to 'src/gallium/drivers')
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state.c | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c index 24c7b100fea..3430734a9dd 100644 --- a/src/gallium/drivers/radeonsi/si_state.c +++ b/src/gallium/drivers/radeonsi/si_state.c @@ -1767,16 +1767,43 @@ static uint32_t si_translate_buffer_numformat(struct pipe_screen *screen, } } -static bool si_is_vertex_format_supported(struct pipe_screen *screen, enum pipe_format format) +static unsigned si_is_vertex_format_supported(struct pipe_screen *screen, + enum pipe_format format, + unsigned usage) { const struct util_format_description *desc; int first_non_void; unsigned data_format; + assert((usage & ~(PIPE_BIND_SHADER_IMAGE | + PIPE_BIND_SAMPLER_VIEW | + PIPE_BIND_VERTEX_BUFFER)) == 0); + desc = util_format_description(format); + + /* There are no native 8_8_8 or 16_16_16 data formats, and we currently + * select 8_8_8_8 and 16_16_16_16 instead. This works reasonably well + * for read-only access (with caveats surrounding bounds checks), but + * obviously fails for write access which we have to implement for + * shader images. Luckily, OpenGL doesn't expect this to be supported + * anyway, and so the only impact is on PBO uploads / downloads, which + * shouldn't be expected to be fast for GL_RGB anyway. + */ + if (desc->block.bits == 3 * 8 || + desc->block.bits == 3 * 16) { + if (usage & (PIPE_BIND_SHADER_IMAGE | PIPE_BIND_SAMPLER_VIEW)) { + usage &= ~(PIPE_BIND_SHADER_IMAGE | PIPE_BIND_SAMPLER_VIEW); + if (!usage) + return 0; + } + } + first_non_void = util_format_get_first_non_void_channel(format); data_format = si_translate_buffer_dataformat(screen, desc, first_non_void); - return data_format != V_008F0C_BUF_DATA_FORMAT_INVALID; + if (data_format == V_008F0C_BUF_DATA_FORMAT_INVALID) + return 0; + + return usage; } static bool si_is_colorbuffer_format_supported(enum pipe_format format) @@ -1831,9 +1858,9 @@ static boolean si_is_format_supported(struct pipe_screen *screen, if (usage & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_SHADER_IMAGE)) { if (target == PIPE_BUFFER) { - if (si_is_vertex_format_supported(screen, format)) - retval |= usage & (PIPE_BIND_SAMPLER_VIEW | - PIPE_BIND_SHADER_IMAGE); + retval |= si_is_vertex_format_supported( + screen, format, usage & (PIPE_BIND_SAMPLER_VIEW | + PIPE_BIND_SHADER_IMAGE)); } else { if (si_is_sampler_format_supported(screen, format)) retval |= usage & (PIPE_BIND_SAMPLER_VIEW | @@ -1862,9 +1889,9 @@ static boolean si_is_format_supported(struct pipe_screen *screen, retval |= PIPE_BIND_DEPTH_STENCIL; } - if ((usage & PIPE_BIND_VERTEX_BUFFER) && - si_is_vertex_format_supported(screen, format)) { - retval |= PIPE_BIND_VERTEX_BUFFER; + if (usage & PIPE_BIND_VERTEX_BUFFER) { + retval |= si_is_vertex_format_supported(screen, format, + PIPE_BIND_VERTEX_BUFFER); } if ((usage & PIPE_BIND_LINEAR) && |