radeonsi: Add missing interpolation mode to check for enabled modes

At least one interpolation mode must be enable, but the code that checks
this was not checking for perspective center.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index 75df4e8..8f6dde0 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -171,6 +171,7 @@ static void si_pipe_shader_ps(struct pipe_context *ctx, struct si_pipe_shader *s
        spi_ps_input_ena = shader->spi_ps_input_ena;
        /* we need to enable at least one of them, otherwise we hang the GPU */
        if (!G_0286CC_PERSP_SAMPLE_ENA(spi_ps_input_ena) &&
+           !G_0286CC_PERSP_CENTER_ENA(spi_ps_input_ena) &&
            !G_0286CC_PERSP_CENTROID_ENA(spi_ps_input_ena) &&
            !G_0286CC_PERSP_PULL_MODEL_ENA(spi_ps_input_ena) &&
            !G_0286CC_LINEAR_SAMPLE_ENA(spi_ps_input_ena) &&