diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/svga/svga_state_fs.c | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/src/gallium/drivers/svga/svga_state_fs.c b/src/gallium/drivers/svga/svga_state_fs.c index f418ebf45f9..51d0eb5bacb 100644 --- a/src/gallium/drivers/svga/svga_state_fs.c +++ b/src/gallium/drivers/svga/svga_state_fs.c @@ -33,6 +33,7 @@ #include "svga_context.h" #include "svga_state.h" #include "svga_cmd.h" +#include "svga_resource_texture.h" #include "svga_tgsi.h" #include "svga_hw_reg.h" @@ -226,9 +227,43 @@ make_fs_key(const struct svga_context *svga, idx = 0; for (i = 0; i < svga->curr.num_samplers; ++i) { - if (svga->curr.sampler[i]) { - key->tex[i].compare_mode = svga->curr.sampler[i]->compare_mode; - key->tex[i].compare_func = svga->curr.sampler[i]->compare_func; + if (svga->curr.sampler_views[i]) { + struct pipe_resource *tex = svga->curr.sampler_views[i]->texture; + struct svga_texture *stex = svga_texture(tex); + SVGA3dSurfaceFormat format = stex->key.format; + + if (format == SVGA3D_Z_D16 || + format == SVGA3D_Z_D24X8 || + format == SVGA3D_Z_D24S8) { + /* If we're sampling from a SVGA3D_Z_D16, SVGA3D_Z_D24X8, + * or SVGA3D_Z_D24S8 surface, we'll automatically get + * shadow comparison. But we only get LEQUAL mode. + * Set TEX_COMPARE_NONE here so we don't emit the extra FS + * code for shadow comparison. + */ + key->tex[i].compare_mode = PIPE_TEX_COMPARE_NONE; + key->tex[i].compare_func = PIPE_FUNC_NEVER; + /* These depth formats _only_ support comparison mode and + * not ordinary sampling so warn if the later is expected. + */ + if (svga->curr.sampler[i]->compare_mode != + PIPE_TEX_COMPARE_R_TO_TEXTURE) { + debug_warn_once("Unsupported shadow compare mode"); + } + /* The only supported comparison mode is LEQUAL */ + if (svga->curr.sampler[i]->compare_func != PIPE_FUNC_LEQUAL) { + debug_warn_once("Unsupported shadow compare function"); + } + } + else { + /* For other texture formats, just use the compare func/mode + * as-is. Should be no-ops for color textures. For depth + * textures, we do not get automatic depth compare. We have + * to do it ourselves in the shader. And we don't get PCF. + */ + key->tex[i].compare_mode = svga->curr.sampler[i]->compare_mode; + key->tex[i].compare_func = svga->curr.sampler[i]->compare_func; + } } } |