r600: enable fp64 lowering to softemu with NIR

The NIR code path does not (yet) take hardware into account
that actually supports fp64 in hardware.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7824>

diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 71b603c..de240c0 100644 (file)
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -407,12 +407,15 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
        case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
                return 0;
 
+        case PIPE_CAP_INT64:
        case PIPE_CAP_DOUBLES:
                if (rscreen->b.family == CHIP_ARUBA ||
                    rscreen->b.family == CHIP_CAYMAN ||
                    rscreen->b.family == CHIP_CYPRESS ||
                    rscreen->b.family == CHIP_HEMLOCK)
                        return 1;
+                if (is_nir_enabled(&rscreen->b))
+                   return 1;
                return 0;
         case PIPE_CAP_INT64_DIVMOD:
            /* it is actually not supported, but the nir lowering hdanles this corectly wheras

diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 703ec72..cfada0a 100644 (file)
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -196,8 +196,13 @@ int r600_pipe_shader_create(struct pipe_context *ctx,
        } else {
                if (sel->ir_type == PIPE_SHADER_IR_TGSI) {
                        sel->nir = tgsi_to_nir(sel->tokens, ctx->screen, true);
-                       /* Lower int64 ops because we have some r600 build-in shaders that use it */
-                       if (!ctx->screen->get_param(ctx->screen, PIPE_CAP_DOUBLES)) {
+                        const nir_shader_compiler_options *nir_options =
+                              (const nir_shader_compiler_options *)
+                              ctx->screen->get_compiler_options(ctx->screen,
+                                                                PIPE_SHADER_IR_NIR,
+                                                                shader->shader.processor_type);
+                        /* Lower int64 ops because we have some r600 build-in shaders that use it */
+                       if (nir_options->lower_int64_options) {
                                NIR_PASS_V(sel->nir, nir_lower_regs_to_ssa);
                                NIR_PASS_V(sel->nir, nir_lower_alu_to_scalar, NULL, NULL);
                                NIR_PASS_V(sel->nir, nir_lower_int64);