From d8f6ef456581644ab9444a1ed23542c2b0fff9e4 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Wed, 6 Oct 2010 09:32:32 +1000 Subject: [PATCH] softpipe: add support for shader stencil export capability this allows softpipe to be used to test shader stencil ref exporting. Signed-off-by: Dave Airlie --- src/gallium/drivers/softpipe/sp_fs_sse.c | 12 +++- src/gallium/drivers/softpipe/sp_quad.h | 1 + .../drivers/softpipe/sp_quad_depth_test.c | 61 ++++++++++++++++--- src/gallium/drivers/softpipe/sp_quad_pipe.c | 3 +- src/gallium/drivers/softpipe/sp_screen.c | 2 + 5 files changed, 67 insertions(+), 12 deletions(-) diff --git a/src/gallium/drivers/softpipe/sp_fs_sse.c b/src/gallium/drivers/softpipe/sp_fs_sse.c index daa158df7c4..5b18cd035e3 100644 --- a/src/gallium/drivers/softpipe/sp_fs_sse.c +++ b/src/gallium/drivers/softpipe/sp_fs_sse.c @@ -169,9 +169,15 @@ fs_sse_run( const struct sp_fragment_shader *base, case TGSI_SEMANTIC_POSITION: { uint j; - for (j = 0; j < 4; j++) { - quad->output.depth[j] = machine->Outputs[0].xyzw[2].f[j]; - } + for (j = 0; j < 4; j++) + quad->output.depth[j] = machine->Outputs[i].xyzw[2].f[j]; + } + break; + case TGSI_SEMANTIC_STENCIL: + { + uint j; + for (j = 0; j < 4; j++) + quad->output.stencil[j] = machine->Outputs[i].xyzw[1].f[j]; } break; } diff --git a/src/gallium/drivers/softpipe/sp_quad.h b/src/gallium/drivers/softpipe/sp_quad.h index a3236bd1169..e745aa80619 100644 --- a/src/gallium/drivers/softpipe/sp_quad.h +++ b/src/gallium/drivers/softpipe/sp_quad.h @@ -85,6 +85,7 @@ struct quad_header_output /** colors in SOA format (rrrr, gggg, bbbb, aaaa) */ float color[PIPE_MAX_COLOR_BUFS][NUM_CHANNELS][QUAD_SIZE]; float depth[QUAD_SIZE]; + uint8_t stencil[QUAD_SIZE]; }; diff --git a/src/gallium/drivers/softpipe/sp_quad_depth_test.c b/src/gallium/drivers/softpipe/sp_quad_depth_test.c index e9b92626176..c8f5f89568a 100644 --- a/src/gallium/drivers/softpipe/sp_quad_depth_test.c +++ b/src/gallium/drivers/softpipe/sp_quad_depth_test.c @@ -47,6 +47,8 @@ struct depth_data { unsigned bzzzz[QUAD_SIZE]; /**< Z values fetched from depth buffer */ unsigned qzzzz[QUAD_SIZE]; /**< Z values from the quad */ ubyte stencilVals[QUAD_SIZE]; + boolean use_shader_stencil_refs; + ubyte shader_stencil_refs[QUAD_SIZE]; struct softpipe_cached_tile *tile; }; @@ -186,6 +188,33 @@ convert_quad_depth( struct depth_data *data, } +/** + * Compute the depth_data::shader_stencil_refs[] values from the float fragment stencil values. + */ +static void +convert_quad_stencil( struct depth_data *data, + const struct quad_header *quad ) +{ + unsigned j; + + data->use_shader_stencil_refs = TRUE; + /* Copy quads stencil values + */ + switch (data->format) { + case PIPE_FORMAT_Z24X8_UNORM: + case PIPE_FORMAT_Z24_UNORM_S8_USCALED: + case PIPE_FORMAT_X8Z24_UNORM: + case PIPE_FORMAT_S8_USCALED_Z24_UNORM: + { + for (j = 0; j < QUAD_SIZE; j++) { + data->shader_stencil_refs[j] = ((unsigned)(quad->output.stencil[j])); + } + } + break; + default: + assert(0); + } +} /** * Write data->bzzzz[] values and data->stencilVals into the Z/stencil buffer. @@ -272,8 +301,14 @@ do_stencil_test(struct depth_data *data, { unsigned passMask = 0x0; unsigned j; + ubyte refs[QUAD_SIZE]; - ref &= valMask; + for (j = 0; j < QUAD_SIZE; j++) { + if (data->use_shader_stencil_refs) + refs[j] = data->shader_stencil_refs[j] & valMask; + else + refs[j] = ref & valMask; + } switch (func) { case PIPE_FUNC_NEVER: @@ -281,42 +316,42 @@ do_stencil_test(struct depth_data *data, break; case PIPE_FUNC_LESS: for (j = 0; j < QUAD_SIZE; j++) { - if (ref < (data->stencilVals[j] & valMask)) { + if (refs[j] < (data->stencilVals[j] & valMask)) { passMask |= (1 << j); } } break; case PIPE_FUNC_EQUAL: for (j = 0; j < QUAD_SIZE; j++) { - if (ref == (data->stencilVals[j] & valMask)) { + if (refs[j] == (data->stencilVals[j] & valMask)) { passMask |= (1 << j); } } break; case PIPE_FUNC_LEQUAL: for (j = 0; j < QUAD_SIZE; j++) { - if (ref <= (data->stencilVals[j] & valMask)) { + if (refs[j] <= (data->stencilVals[j] & valMask)) { passMask |= (1 << j); } } break; case PIPE_FUNC_GREATER: for (j = 0; j < QUAD_SIZE; j++) { - if (ref > (data->stencilVals[j] & valMask)) { + if (refs[j] > (data->stencilVals[j] & valMask)) { passMask |= (1 << j); } } break; case PIPE_FUNC_NOTEQUAL: for (j = 0; j < QUAD_SIZE; j++) { - if (ref != (data->stencilVals[j] & valMask)) { + if (refs[j] != (data->stencilVals[j] & valMask)) { passMask |= (1 << j); } } break; case PIPE_FUNC_GEQUAL: for (j = 0; j < QUAD_SIZE; j++) { - if (ref >= (data->stencilVals[j] & valMask)) { + if (refs[j] >= (data->stencilVals[j] & valMask)) { passMask |= (1 << j); } } @@ -348,9 +383,14 @@ apply_stencil_op(struct depth_data *data, { unsigned j; ubyte newstencil[QUAD_SIZE]; + ubyte refs[QUAD_SIZE]; for (j = 0; j < QUAD_SIZE; j++) { newstencil[j] = data->stencilVals[j]; + if (data->use_shader_stencil_refs) + refs[j] = data->shader_stencil_refs[j]; + else + refs[j] = ref; } switch (op) { @@ -367,7 +407,7 @@ apply_stencil_op(struct depth_data *data, case PIPE_STENCIL_OP_REPLACE: for (j = 0; j < QUAD_SIZE; j++) { if (mask & (1 << j)) { - newstencil[j] = ref; + newstencil[j] = refs[j]; } } break; @@ -688,8 +728,10 @@ depth_test_quads_fallback(struct quad_stage *qs, unsigned i, pass = 0; const struct sp_fragment_shader *fs = qs->softpipe->fs; boolean interp_depth = !fs->info.writes_z; + boolean shader_stencil_ref = fs->info.writes_stencil; struct depth_data data; + data.use_shader_stencil_refs = FALSE; if (qs->softpipe->depth_stencil->alpha.enabled) { nr = alpha_test_quads(qs, quads, nr); @@ -716,6 +758,9 @@ depth_test_quads_fallback(struct quad_stage *qs, } if (qs->softpipe->depth_stencil->stencil[0].enabled) { + if (shader_stencil_ref) + convert_quad_stencil(&data, quads[i]); + depth_stencil_test_quad(qs, &data, quads[i]); write_depth_stencil_values(&data, quads[i]); } diff --git a/src/gallium/drivers/softpipe/sp_quad_pipe.c b/src/gallium/drivers/softpipe/sp_quad_pipe.c index 43b8e88e334..2cfd02a22c6 100644 --- a/src/gallium/drivers/softpipe/sp_quad_pipe.c +++ b/src/gallium/drivers/softpipe/sp_quad_pipe.c @@ -47,7 +47,8 @@ sp_build_quad_pipeline(struct softpipe_context *sp) sp->framebuffer.zsbuf && !sp->depth_stencil->alpha.enabled && !sp->fs->info.uses_kill && - !sp->fs->info.writes_z; + !sp->fs->info.writes_z && + !sp->fs->info.writes_stencil; sp->quad.first = sp->quad.blend; diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c index 2053d02f628..37557d11940 100644 --- a/src/gallium/drivers/softpipe/sp_screen.c +++ b/src/gallium/drivers/softpipe/sp_screen.c @@ -114,6 +114,8 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param) return 1; case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE: return 0; + case PIPE_CAP_SHADER_STENCIL_EXPORT: + return 1; default: return 0; } -- 2.30.2