radeonsi: remove redundant si_shader_info::uses_derivatives

[mesa.git] / src / gallium / drivers / radeonsi / si_blit.c

diff --git a/src/gallium/drivers/radeonsi/si_blit.c b/src/gallium/drivers/radeonsi/si_blit.c
index ab7c031af2353c1553ba74400e74f4062a766423..4e77e61ac866987d93fd56df3c0731031070807f 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_blit.c
+++ b/src/gallium/drivers/radeonsi/si_blit.c
@@ -824,6 +824,28 @@ struct texture_orig_info {
    unsigned npix0_y;
 };
 
+static void si_use_compute_copy_for_float_formats(struct si_context *sctx,
+                                                  struct pipe_resource *texture,
+                                                  unsigned level) {
+   struct si_texture *tex = (struct si_texture *)texture;
+
+   /* If we are uploading into FP16 or R11G11B10_FLOAT via a blit, CB clobbers NaNs,
+    * so in order to preserve them exactly, we have to use the compute blit.
+    * The compute blit is used only when the destination doesn't have DCC, so
+    * disable it here, which is kinda a hack.
+    * If we are uploading into 32-bit floats with DCC via a blit, NaNs will also get
+    * lost so we need to disable DCC as well.
+    *
+    * This makes KHR-GL45.texture_view.view_classes pass on gfx9.
+    * gfx10 has the same issue, but the test doesn't use a large enough texture
+    * to enable DCC and fail, so it always passes.
+    */
+   if (vi_dcc_enabled(tex, level) &&
+       util_format_is_float(texture->format)) {
+      si_texture_disable_dcc(sctx, tex);
+   }
+}
+
 void si_resource_copy_region(struct pipe_context *ctx, struct pipe_resource *dst,
                              unsigned dst_level, unsigned dstx, unsigned dsty, unsigned dstz,
                              struct pipe_resource *src, unsigned src_level,
@@ -844,6 +866,8 @@ void si_resource_copy_region(struct pipe_context *ctx, struct pipe_resource *dst
       return;
    }
 
+   si_use_compute_copy_for_float_formats(sctx, dst, dst_level);
+
    if (!util_format_is_compressed(src->format) && !util_format_is_compressed(dst->format) &&
        !util_format_is_depth_or_stencil(src->format) && src->nr_samples <= 1 &&
        !vi_dcc_enabled(sdst, dst_level) &&