Do you fix tgsi_declaration to support per-component interpolation mode
anywhere ?
If you don't, or if you don't update the corresponding bits in the
driver code to handle that (which I don't expect you to), you have to
put NO_MIXED_INTERPOLATION everywhere.
On 02/23/2012 09:12 PM, Vincent Lejeune wrote:
> ---
> src/gallium/drivers/nv50/nv50_screen.c | 2 ++
> src/gallium/drivers/nvc0/nvc0_screen.c | 11 +++++++++++
> src/gallium/drivers/nvfx/nvfx_screen.c | 4 ++++
> 3 files changed, 17 insertions(+), 0 deletions(-)
>
> diff --git a/src/gallium/drivers/nv50/nv50_screen.c
> b/src/gallium/drivers/nv50/nv50_screen.c
> index 1d53593..5fb81d9 100644
> --- a/src/gallium/drivers/nv50/nv50_screen.c
> +++ b/src/gallium/drivers/nv50/nv50_screen.c
> @@ -208,6 +208,8 @@ nv50_screen_get_shader_param(struct pipe_screen *pscreen,
> unsigned shader,
> return 32;
> case PIPE_SHADER_CAP_OUTPUT_READ:
> return 0; /* maybe support this for fragment shaders ? */
> + case PIPE_SHADER_CAP_VARYINGS_PACKING_CONSTRAINTS:
> + return NONE;
> default:
> NOUVEAU_ERR("unknown PIPE_SHADER_CAP %d\n", param);
> return 0;
> diff --git a/src/gallium/drivers/nvc0/nvc0_screen.c
> b/src/gallium/drivers/nvc0/nvc0_screen.c
> index abc04ab..824b78b 100644
> --- a/src/gallium/drivers/nvc0/nvc0_screen.c
> +++ b/src/gallium/drivers/nvc0/nvc0_screen.c
> @@ -143,6 +143,15 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum
> pipe_cap param)
> }
> }
>
> +// Where to put this ?
> +enum packing_constraint
> +{
> + NONE, /** no limitation (scalar architecture : swrast, nouveau) */
> + SMOOTH_NOPERSPECTIVE_MIXED, /** Smooth and noperspective varying can be
> mixed but not with flat (i965) */
> + NO_MIXED_INTERPOLATION, /** Dont mix different interpolation (r300 and
> r600) */
> + AVOID_PACKING, /** Disable packing */
> +};
> +
> static int
> nvc0_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader,
> enum pipe_shader_cap param)
> @@ -204,6 +213,8 @@ nvc0_screen_get_shader_param(struct pipe_screen *pscreen,
> unsigned shader,
> */
> case PIPE_SHADER_CAP_OUTPUT_READ:
> return 0; /* shader != PIPE_SHADER_TESSELLATION_CONTROL; */
> + case PIPE_SHADER_CAP_VARYINGS_PACKING_CONSTRAINTS:
> + return NONE;
> default:
> NOUVEAU_ERR("unknown PIPE_SHADER_CAP %d\n", param);
> return 0;
> diff --git a/src/gallium/drivers/nvfx/nvfx_screen.c
> b/src/gallium/drivers/nvfx/nvfx_screen.c
> index 71e7c15..46452c7 100644
> --- a/src/gallium/drivers/nvfx/nvfx_screen.c
> +++ b/src/gallium/drivers/nvfx/nvfx_screen.c
> @@ -145,6 +145,8 @@ nvfx_screen_get_shader_param(struct pipe_screen *pscreen,
> unsigned shader, enum
> return screen->use_nv4x ? 1 : 0;
> case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
> return 16;
> + case PIPE_SHADER_CAP_VARYINGS_PACKING_CONSTRAINTS:
> + return NONE;
> default:
> break;
> }
> @@ -189,6 +191,8 @@ nvfx_screen_get_shader_param(struct pipe_screen *pscreen,
> unsigned shader, enum
> return 0;
> case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
> return 0; /* We have 4 on nv40 - but unsupported
> currently */
> + case PIPE_SHADER_CAP_VARYINGS_PACKING_CONSTRAINTS:
> + return NONE;
> default:
> break;
> }
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