radeonsi: Use linear instead of constant interpolation for now.

Constant interpolation still hangs the GPU for some reason.

diff --git a/src/gallium/drivers/radeonsi/evergreen_state.c b/src/gallium/drivers/radeonsi/evergreen_state.c
index c7bd6c1..9c45719 100644 (file)
--- a/src/gallium/drivers/radeonsi/evergreen_state.c
+++ b/src/gallium/drivers/radeonsi/evergreen_state.c
@@ -1058,7 +1058,8 @@ static void *evergreen_create_rs_state(struct pipe_context *ctx,
        rs->offset_scale = state->offset_scale * 12.0f;
 
        rstate->id = R600_PIPE_STATE_RASTERIZER;
-       tmp = S_0286D4_FLAT_SHADE_ENA(state->flatshade);
+       /* XXX: Flat shading hangs the GPU */
+       tmp = S_0286D4_FLAT_SHADE_ENA(0);
        if (state->sprite_coord_enable) {
                tmp |= S_0286D4_PNT_SPRITE_ENA(1) |
                        S_0286D4_PNT_SPRITE_OVRD_X(V_0286D4_SPI_PNT_SPRITE_SEL_S) |
@@ -2032,6 +2033,11 @@ void si_pipe_shader_ps(struct pipe_context *ctx, struct si_pipe_shader *shader)
        db_shader_control = S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
        for (i = 0; i < rshader->ninput; i++) {
                ninterp++;
+               /* XXX: Flat shading hangs the GPU */
+               if (rshader->input[i].interpolate == TGSI_INTERPOLATE_CONSTANT ||
+                   (rshader->input[i].interpolate == TGSI_INTERPOLATE_COLOR &&
+                    rctx->rasterizer->flatshade))
+                       have_linear = TRUE;
                if (rshader->input[i].interpolate == TGSI_INTERPOLATE_LINEAR)
                        have_linear = TRUE;
                if (rshader->input[i].interpolate == TGSI_INTERPOLATE_PERSPECTIVE)
@@ -2224,11 +2230,15 @@ void si_update_spi_map(struct r600_context *rctx)
        for (i = 0; i < ps->ninput; i++) {
                tmp = 0;
 
-               if (ps->input[i].name == TGSI_SEMANTIC_COLOR ||
-                   ps->input[i].name == TGSI_SEMANTIC_BCOLOR ||
-                   ps->input[i].name == TGSI_SEMANTIC_POSITION) {
+#if 0
+               /* XXX: Flat shading hangs the GPU */
+               if (ps->input[i].name == TGSI_SEMANTIC_POSITION ||
+                   ps->input[i].interpolate == TGSI_INTERPOLATE_CONSTANT ||
+                   (ps->input[i].interpolate == TGSI_INTERPOLATE_COLOR &&
+                    rctx->rasterizer && rctx->rasterizer->flatshade)) {
                        tmp |= S_028644_FLAT_SHADE(1);
                }
+#endif
 
                if (ps->input[i].name == TGSI_SEMANTIC_GENERIC &&
                    rctx->sprite_coord_enable & (1 << ps->input[i].sid)) {

diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.c b/src/gallium/drivers/radeonsi/radeonsi_shader.c
index 0a4f04b..d0820b8 100644 (file)
--- a/src/gallium/drivers/radeonsi/radeonsi_shader.c
+++ b/src/gallium/drivers/radeonsi/radeonsi_shader.c
@@ -250,8 +250,13 @@ static void declare_input_fs(
        /* XXX: Handle all possible interpolation modes */
        switch (decl->Interp.Interpolate) {
        case TGSI_INTERPOLATE_COLOR:
+               /* XXX: Flat shading hangs the GPU */
                if (si_shader_ctx->rctx->rasterizer->flatshade) {
+#if 0
                        intr_name = "llvm.SI.fs.interp.constant";
+#else
+                       intr_name = "llvm.SI.fs.interp.linear.center";
+#endif
                } else {
                        if (decl->Interp.Centroid)
                                intr_name = "llvm.SI.fs.interp.persp.centroid";
@@ -260,8 +265,11 @@ static void declare_input_fs(
                }
                break;
        case TGSI_INTERPOLATE_CONSTANT:
+               /* XXX: Flat shading hangs the GPU */
+#if 0
                intr_name = "llvm.SI.fs.interp.constant";
                break;
+#endif
        case TGSI_INTERPOLATE_LINEAR:
                if (decl->Interp.Centroid)
                        intr_name = "llvm.SI.fs.interp.linear.centroid";