From: Dave Airlie Date: Sat, 18 Dec 2010 00:40:33 +0000 (+1000) Subject: r300g: add support for color0 writes to all bound color buffers. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4e52e8f746e3565bf3fe9ba8e4e3744ce0302478;p=mesa.git r300g: add support for color0 writes to all bound color buffers. Thanks to Marek Olšák for making my initial attempt actually work. Signed-off-by: Dave Airlie --- diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h index 39dcde06106..247f26d7a76 100644 --- a/src/gallium/drivers/r300/r300_context.h +++ b/src/gallium/drivers/r300/r300_context.h @@ -697,7 +697,8 @@ void r500_emit_index_bias(struct r300_context *r300, int index_bias); enum r300_fb_state_change { R300_CHANGED_FB_STATE = 0, R300_CHANGED_CBZB_FLAG, - R300_CHANGED_ZCLEAR_FLAG + R300_CHANGED_ZCLEAR_FLAG, + R300_CHANGED_MULTIWRITE }; void r300_mark_fb_state_dirty(struct r300_context *r300, diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c index 9e0df30e527..de78c96f11a 100644 --- a/src/gallium/drivers/r300/r300_emit.c +++ b/src/gallium/drivers/r300/r300_emit.c @@ -369,6 +369,8 @@ void r300_emit_fb_state(struct r300_context* r300, unsigned size, void* state) struct r300_surface* surf; unsigned i; boolean can_hyperz = r300->rws->get_value(r300->rws, R300_CAN_HYPERZ); + uint32_t rb3d_cctl = 0; + CS_LOCALS(r300); BEGIN_CS(size); @@ -376,11 +378,13 @@ void r300_emit_fb_state(struct r300_context* r300, unsigned size, void* state) /* NUM_MULTIWRITES replicates COLOR[0] to all colorbuffers, which is not * what we usually want. */ if (r300->screen->caps.is_r500) { - OUT_CS_REG(R300_RB3D_CCTL, - R300_RB3D_CCTL_INDEPENDENT_COLORFORMAT_ENABLE_ENABLE); - } else { - OUT_CS_REG(R300_RB3D_CCTL, 0); + rb3d_cctl = R300_RB3D_CCTL_INDEPENDENT_COLORFORMAT_ENABLE_ENABLE; } + if (r300_fragment_shader_writes_all(r300_fs(r300))) { + rb3d_cctl |= R300_RB3D_CCTL_NUM_MULTIWRITES(fb->nr_cbufs); + } + + OUT_CS_REG(R300_RB3D_CCTL, rb3d_cctl); /* Set up colorbuffers. */ for (i = 0; i < fb->nr_cbufs; i++) { @@ -482,15 +486,21 @@ void r300_emit_fb_state_pipelined(struct r300_context *r300, { struct pipe_framebuffer_state* fb = (struct pipe_framebuffer_state*)r300->fb_state.state; - unsigned i; + unsigned i, num_cbufs = fb->nr_cbufs; CS_LOCALS(r300); + /* If we use the multiwrite feature, the colorbuffers 2,3,4 must be + * marked as UNUSED in the US block. */ + if (r300_fragment_shader_writes_all(r300_fs(r300))) { + num_cbufs = MIN2(num_cbufs, 1); + } + BEGIN_CS(size); /* Colorbuffer format in the US block. * (must be written after unpipelined regs) */ OUT_CS_REG_SEQ(R300_US_OUT_FMT_0, 4); - for (i = 0; i < fb->nr_cbufs; i++) { + for (i = 0; i < num_cbufs; i++) { OUT_CS(r300_surface(fb->cbufs[i])->format); } for (; i < 4; i++) { diff --git a/src/gallium/drivers/r300/r300_fs.c b/src/gallium/drivers/r300/r300_fs.c index 2936c3486e2..6d4091dc87d 100644 --- a/src/gallium/drivers/r300/r300_fs.c +++ b/src/gallium/drivers/r300/r300_fs.c @@ -395,6 +395,13 @@ static void r300_translate_fragment_shader( find_output_registers(&compiler, shader); + shader->write_all = FALSE; + for (i = 0; i < shader->info.num_properties; i++) { + if (shader->info.properties[i].name == TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS) { + shader->write_all = TRUE; + } + } + if (compiler.Base.Debug & RC_DBG_LOG) { DBG(r300, DBG_FP, "r300: Initial fragment program\n"); tgsi_dump(tokens, 0); diff --git a/src/gallium/drivers/r300/r300_fs.h b/src/gallium/drivers/r300/r300_fs.h index 51bfa88c5ef..c86a90b85ae 100644 --- a/src/gallium/drivers/r300/r300_fs.h +++ b/src/gallium/drivers/r300/r300_fs.h @@ -54,6 +54,9 @@ struct r300_fragment_shader_code { uint32_t *cb_code; struct r300_fragment_shader_code* next; + + boolean write_all; + }; struct r300_fragment_shader { @@ -81,4 +84,10 @@ static INLINE boolean r300_fragment_shader_writes_depth(struct r300_fragment_sha return (fs->shader->code.writes_depth) ? TRUE : FALSE; } +static INLINE boolean r300_fragment_shader_writes_all(struct r300_fragment_shader *fs) +{ + if (!fs) + return FALSE; + return (fs->shader->write_all) ? TRUE : FALSE; +} #endif /* R300_FS_H */ diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index f902db54cc1..62c4f8d85a3 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -686,13 +686,22 @@ void r300_mark_fb_state_dirty(struct r300_context *r300, struct pipe_framebuffer_state *state = r300->fb_state.state; boolean can_hyperz = r300->rws->get_value(r300->rws, R300_CAN_HYPERZ); - /* What is marked as dirty depends on the enum r300_fb_state_change. */ r300_mark_atom_dirty(r300, &r300->gpu_flush); r300_mark_atom_dirty(r300, &r300->fb_state); - r300_mark_atom_dirty(r300, &r300->hyperz_state); + /* What is marked as dirty depends on the enum r300_fb_state_change. */ if (change == R300_CHANGED_FB_STATE) { r300_mark_atom_dirty(r300, &r300->aa_state); + } + + if (change == R300_CHANGED_FB_STATE || + change == R300_CHANGED_CBZB_FLAG || + change == R300_CHANGED_ZCLEAR_FLAG) { + r300_mark_atom_dirty(r300, &r300->hyperz_state); + } + + if (change == R300_CHANGED_FB_STATE || + change == R300_CHANGED_MULTIWRITE) { r300_mark_atom_dirty(r300, &r300->fb_state_pipelined); } @@ -876,16 +885,25 @@ static void r300_bind_fs_state(struct pipe_context* pipe, void* shader) { struct r300_context* r300 = r300_context(pipe); struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader; + struct pipe_framebuffer_state *fb = r300->fb_state.state; + boolean last_multi_write; if (fs == NULL) { r300->fs.state = NULL; return; } + last_multi_write = r300_fragment_shader_writes_all(r300_fs(r300)); + r300->fs.state = fs; r300_pick_fragment_shader(r300); r300_mark_fs_code_dirty(r300); + if (fb->nr_cbufs > 1 && + last_multi_write != r300_fragment_shader_writes_all(fs)) { + r300_mark_fb_state_dirty(r300, R300_CHANGED_MULTIWRITE); + } + r300_mark_atom_dirty(r300, &r300->rs_block_state); /* Will be updated before the emission. */ }