[Mesa-dev] [PATCH 1/2] r600g: precalculate semantic indices for SPI setup
Alex Deucher
alexdeucher at gmail.com
Fri Nov 4 13:28:28 PDT 2011
On Fri, Nov 4, 2011 at 1:24 PM, Vadim Girlin <vadimgirlin at gmail.com> wrote:
> There is no need to duplicate semantic mapping which is done in hw, so get
> rid of r600_find_vs_semantic_index.
>
> TGSI name/sid pair is mapped to the 8-bit semantic index for SPI.
Pushed. Thanks! Note that the hw can use semantic ids for vertex
fetch as well.
Alex
>
> Signed-off-by: Vadim Girlin <vadimgirlin at gmail.com>
> ---
>
> This patch and the next one were tested on the evergreen,
> there are some changes in the test results:
>
> Following tests are passing due to slightly different handling of
> TGSI_SEMANTIC_BCOLOR (it's still not completely correct).
> vertex-program-two-side enabled back back2 fail -> pass
> vertex-program-two-side enabled back front2 fail -> pass
> vertex-program-two-side enabled front back2 fail -> pass
>
> This test usually fails for me after these patches, but passes when
> it's run independently - probably unrelated:
> time-elapsed pass -> fail
>
> src/gallium/drivers/r600/evergreen_state.c | 19 ++++----
> src/gallium/drivers/r600/r600_shader.c | 67 ++++++++++++++++----------
> src/gallium/drivers/r600/r600_shader.h | 2 +-
> src/gallium/drivers/r600/r600_state.c | 20 +++-----
> src/gallium/drivers/r600/r600_state_common.c | 13 ++---
> 5 files changed, 64 insertions(+), 57 deletions(-)
>
> diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
> index fd2e5da..904267d 100644
> --- a/src/gallium/drivers/r600/evergreen_state.c
> +++ b/src/gallium/drivers/r600/evergreen_state.c
> @@ -2375,20 +2375,20 @@ void evergreen_pipe_shader_vs(struct pipe_context *ctx, struct r600_pipe_shader
> struct r600_pipe_context *rctx = (struct r600_pipe_context *)ctx;
> struct r600_pipe_state *rstate = &shader->rstate;
> struct r600_shader *rshader = &shader->shader;
> - unsigned spi_vs_out_id[10];
> - unsigned i, tmp, nparams;
> + unsigned spi_vs_out_id[10] = {};
> + unsigned i, tmp, nparams = 0;
>
> /* clear previous register */
> rstate->nregs = 0;
>
> - /* so far never got proper semantic id from tgsi */
> - for (i = 0; i < 10; i++) {
> - spi_vs_out_id[i] = 0;
> - }
> - for (i = 0; i < 32; i++) {
> - tmp = i << ((i & 3) * 8);
> - spi_vs_out_id[i / 4] |= tmp;
> + for (i = 0; i < rshader->noutput; i++) {
> + if (rshader->output[i].spi_sid) {
> + tmp = rshader->output[i].spi_sid << ((nparams & 3) * 8);
> + spi_vs_out_id[nparams / 4] |= tmp;
> + nparams++;
> + }
> }
> +
> for (i = 0; i < 10; i++) {
> r600_pipe_state_add_reg(rstate,
> R_02861C_SPI_VS_OUT_ID_0 + i * 4,
> @@ -2399,7 +2399,6 @@ void evergreen_pipe_shader_vs(struct pipe_context *ctx, struct r600_pipe_shader
> * VS is required to export at least one param and r600_shader_from_tgsi()
> * takes care of adding a dummy export.
> */
> - nparams = rshader->noutput - rshader->npos;
> if (nparams < 1)
> nparams = 1;
>
> diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
> index 87164ce..448e03a 100644
> --- a/src/gallium/drivers/r600/r600_shader.c
> +++ b/src/gallium/drivers/r600/r600_shader.c
> @@ -57,24 +57,6 @@ issued in the w slot as well.
> The compiler must issue the source argument to slots z, y, and x
> */
>
> -
> -int r600_find_vs_semantic_index(struct r600_shader *vs,
> - struct r600_shader *ps, int id)
> -{
> - struct r600_shader_io *input = &ps->input[id];
> - int index = 0;
> -
> - for (int i = 0; i < vs->noutput; i++) {
> - if (input->name == vs->output[i].name &&
> - input->sid == vs->output[i].sid)
> - return index;
> - else if (vs->output[i].name != TGSI_SEMANTIC_POSITION &&
> - vs->output[i].name != TGSI_SEMANTIC_PSIZE)
> - index++;
> - }
> - return 0;
> -}
> -
> static int r600_pipe_shader(struct pipe_context *ctx, struct r600_pipe_shader *shader)
> {
> struct r600_pipe_context *rctx = (struct r600_pipe_context *)ctx;
> @@ -361,6 +343,44 @@ static int evergreen_interp_flat(struct r600_shader_ctx *ctx, int input)
> * DB_SOURCE_FORMAT - export control restrictions
> *
> */
> +
> +
> +/* Map name/sid pair from tgsi to the 8-bit semantic index for SPI setup */
> +static int r600_spi_sid(struct r600_shader_io * io)
> +{
> + int index, name = io->name;
> +
> + /* These params are handled differently, they don't need
> + * semantic indices, so we'll use 0 for them.
> + */
> + if (name == TGSI_SEMANTIC_POSITION ||
> + name == TGSI_SEMANTIC_PSIZE ||
> + name == TGSI_SEMANTIC_FACE)
> + index = 0;
> + else {
> + if (name == TGSI_SEMANTIC_GENERIC) {
> + /* For generic params simply use sid from tgsi */
> + index = io->sid;
> + } else {
> +
> + /* FIXME: two-side rendering is broken in r600g, this will
> + * keep old functionality */
> + if (name == TGSI_SEMANTIC_BCOLOR)
> + name = TGSI_SEMANTIC_COLOR;
> +
> + /* For non-generic params - pack name and sid into 8 bits */
> + index = 0x80 | (name<<3) | (io->sid);
> + }
> +
> + /* Make sure that all really used indices have nonzero value, so
> + * we can just compare it to 0 later instead of comparing the name
> + * with different values to detect special cases. */
> + index++;
> + }
> +
> + return index;
> +};
> +
> static int tgsi_declaration(struct r600_shader_ctx *ctx)
> {
> struct tgsi_full_declaration *d = &ctx->parse.FullToken.FullDeclaration;
> @@ -372,13 +392,13 @@ static int tgsi_declaration(struct r600_shader_ctx *ctx)
> i = ctx->shader->ninput++;
> ctx->shader->input[i].name = d->Semantic.Name;
> ctx->shader->input[i].sid = d->Semantic.Index;
> + ctx->shader->input[i].spi_sid = r600_spi_sid(&ctx->shader->input[i]);
> ctx->shader->input[i].interpolate = d->Declaration.Interpolate;
> ctx->shader->input[i].centroid = d->Declaration.Centroid;
> ctx->shader->input[i].gpr = ctx->file_offset[TGSI_FILE_INPUT] + d->Range.First;
> if (ctx->type == TGSI_PROCESSOR_FRAGMENT && ctx->bc->chip_class >= EVERGREEN) {
> /* turn input into interpolate on EG */
> - if (ctx->shader->input[i].name != TGSI_SEMANTIC_POSITION &&
> - ctx->shader->input[i].name != TGSI_SEMANTIC_FACE) {
> + if (ctx->shader->input[i].spi_sid) {
> ctx->shader->input[i].lds_pos = ctx->shader->nlds++;
> if (ctx->shader->input[i].interpolate > 0) {
> evergreen_interp_alu(ctx, i);
> @@ -392,14 +412,9 @@ static int tgsi_declaration(struct r600_shader_ctx *ctx)
> i = ctx->shader->noutput++;
> ctx->shader->output[i].name = d->Semantic.Name;
> ctx->shader->output[i].sid = d->Semantic.Index;
> + ctx->shader->output[i].spi_sid = r600_spi_sid(&ctx->shader->output[i]);
> ctx->shader->output[i].gpr = ctx->file_offset[TGSI_FILE_OUTPUT] + d->Range.First;
> ctx->shader->output[i].interpolate = d->Declaration.Interpolate;
> - if (ctx->type == TGSI_PROCESSOR_VERTEX) {
> - /* these don't count as vertex param exports */
> - if ((ctx->shader->output[i].name == TGSI_SEMANTIC_POSITION) ||
> - (ctx->shader->output[i].name == TGSI_SEMANTIC_PSIZE))
> - ctx->shader->npos++;
> - }
> break;
> case TGSI_FILE_CONSTANT:
> case TGSI_FILE_TEMPORARY:
> diff --git a/src/gallium/drivers/r600/r600_shader.h b/src/gallium/drivers/r600/r600_shader.h
> index ada369a..9990ba6 100644
> --- a/src/gallium/drivers/r600/r600_shader.h
> +++ b/src/gallium/drivers/r600/r600_shader.h
> @@ -30,6 +30,7 @@ struct r600_shader_io {
> unsigned gpr;
> unsigned done;
> int sid;
> + int spi_sid;
> unsigned interpolate;
> boolean centroid;
> unsigned lds_pos; /* for evergreen */
> @@ -40,7 +41,6 @@ struct r600_shader {
> struct r600_bytecode bc;
> unsigned ninput;
> unsigned noutput;
> - unsigned npos;
> unsigned nlds;
> struct r600_shader_io input[32];
> struct r600_shader_io output[32];
> diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
> index bf3da79..ce65da6 100644
> --- a/src/gallium/drivers/r600/r600_state.c
> +++ b/src/gallium/drivers/r600/r600_state.c
> @@ -2142,22 +2142,19 @@ void r600_pipe_shader_vs(struct pipe_context *ctx, struct r600_pipe_shader *shad
> struct r600_pipe_state *rstate = &shader->rstate;
> struct r600_shader *rshader = &shader->shader;
> unsigned spi_vs_out_id[10];
> - unsigned i, tmp, nparams;
> + unsigned i, tmp, nparams = 0;
>
> /* clear previous register */
> rstate->nregs = 0;
>
> - /* so far never got proper semantic id from tgsi */
> - /* FIXME better to move this in config things so they get emited
> - * only one time per cs
> - */
> - for (i = 0; i < 10; i++) {
> - spi_vs_out_id[i] = 0;
> - }
> - for (i = 0; i < 32; i++) {
> - tmp = i << ((i & 3) * 8);
> - spi_vs_out_id[i / 4] |= tmp;
> + for (i = 0; i < rshader->noutput; i++) {
> + if (rshader->output[i].spi_sid) {
> + tmp = rshader->output[i].spi_sid << ((nparams & 3) * 8);
> + spi_vs_out_id[nparams / 4] |= tmp;
> + nparams++;
> + }
> }
> +
> for (i = 0; i < 10; i++) {
> r600_pipe_state_add_reg(rstate,
> R_028614_SPI_VS_OUT_ID_0 + i * 4,
> @@ -2168,7 +2165,6 @@ void r600_pipe_shader_vs(struct pipe_context *ctx, struct r600_pipe_shader *shad
> * VS is required to export at least one param and r600_shader_from_tgsi()
> * takes care of adding a dummy export.
> */
> - nparams = rshader->noutput - rshader->npos;
> if (nparams < 1)
> nparams = 1;
>
> diff --git a/src/gallium/drivers/r600/r600_state_common.c b/src/gallium/drivers/r600/r600_state_common.c
> index b24bb54..3d0345a 100644
> --- a/src/gallium/drivers/r600/r600_state_common.c
> +++ b/src/gallium/drivers/r600/r600_state_common.c
> @@ -366,14 +366,11 @@ static void r600_spi_update(struct r600_pipe_context *rctx)
>
> rstate->nregs = 0;
> for (i = 0; i < rshader->ninput; i++) {
> - if (rshader->input[i].name == TGSI_SEMANTIC_POSITION ||
> - rshader->input[i].name == TGSI_SEMANTIC_FACE)
> - if (rctx->chip_class >= EVERGREEN)
> - continue;
> - else
> - sid=0;
> - else
> - sid=r600_find_vs_semantic_index(&rctx->vs_shader->shader, rshader, i);
> +
> + sid = rshader->input[i].spi_sid;
> +
> + if (!sid && (rctx->chip_class >= EVERGREEN))
> + continue;
>
> tmp = S_028644_SEMANTIC(sid);
>
> --
> 1.7.7
>
> _______________________________________________
> mesa-dev mailing list
> mesa-dev at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev
>
More information about the mesa-dev
mailing list