From bf60eb3fec844a7c3793aba0c70da56b74a17344 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= Date: Thu, 24 Dec 2009 03:10:33 +0100 Subject: [PATCH] r300g: add WPOS --- src/gallium/drivers/r300/r300_emit.c | 22 ++++++++ src/gallium/drivers/r300/r300_fs.c | 21 +++++++ .../drivers/r300/r300_shader_semantics.h | 2 + src/gallium/drivers/r300/r300_state.c | 6 ++ src/gallium/drivers/r300/r300_state_derived.c | 20 +++++++ src/gallium/drivers/r300/r300_vs.c | 56 ++++++++++++++++++- 6 files changed, 124 insertions(+), 3 deletions(-) diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c index 596ec21bc0e..30a1000c294 100644 --- a/src/gallium/drivers/r300/r300_emit.c +++ b/src/gallium/drivers/r300/r300_emit.c @@ -165,6 +165,28 @@ static const float * get_shader_constant( vec[3] = 0; break; + case RC_STATE_R300_VIEWPORT_SCALE: + if (r300->rs_state->enable_vte) { + vec[0] = r300->viewport_state->xscale; + vec[1] = r300->viewport_state->yscale; + vec[2] = r300->viewport_state->zscale; + } else { + vec[0] = 1; + vec[1] = 1; + vec[2] = 1; + } + break; + + case RC_STATE_R300_VIEWPORT_OFFSET: + if (r300->rs_state->enable_vte) { + vec[0] = r300->viewport_state->xoffset; + vec[1] = r300->viewport_state->yoffset; + vec[2] = r300->viewport_state->zoffset; + } else { + /* Zeros. */ + } + break; + default: debug_printf("r300: Implementation error: " "Unknown RC_CONSTANT type %d\n", constant->u.State[0]); diff --git a/src/gallium/drivers/r300/r300_fs.c b/src/gallium/drivers/r300/r300_fs.c index 4e1b61ca409..60ea9c171d5 100644 --- a/src/gallium/drivers/r300/r300_fs.c +++ b/src/gallium/drivers/r300/r300_fs.c @@ -63,6 +63,11 @@ void r300_shader_read_fs_inputs(struct tgsi_shader_info* info, fs_inputs->fog = i; break; + case TGSI_SEMANTIC_POSITION: + assert(index == 0); + fs_inputs->wpos = i; + break; + default: assert(0); } @@ -114,6 +119,9 @@ static void allocate_hardware_inputs( if (inputs->fog != ATTR_UNUSED) { allocate(mydata, inputs->fog, reg++); } + if (inputs->wpos != ATTR_UNUSED) { + allocate(mydata, inputs->wpos, reg++); + } } static void get_compare_state( @@ -144,6 +152,7 @@ static void r300_translate_fragment_shader( struct r300_fragment_shader* fs = r300->fs; struct r300_fragment_program_compiler compiler; struct tgsi_to_rc ttr; + int wpos = fs->inputs.wpos; /* Setup the compiler. */ memset(&compiler, 0, sizeof(compiler)); @@ -171,6 +180,18 @@ static void r300_translate_fragment_shader( fs->shadow_samplers = compiler.Base.Program.ShadowSamplers; + /** + * Transform the program to support WPOS. + * + * Introduce a small fragment at the start of the program that will be + * the only code that directly reads the WPOS input. + * All other code pieces that reference that input will be rewritten + * to read from a newly allocated temporary. */ + if (wpos != ATTR_UNUSED) { + /* Moving the input to some other reg is not really necessary. */ + rc_transform_fragment_wpos(&compiler.Base, wpos, wpos, TRUE); + } + /* Invoke the compiler */ r3xx_compile_fragment_program(&compiler); if (compiler.Base.Error) { diff --git a/src/gallium/drivers/r300/r300_shader_semantics.h b/src/gallium/drivers/r300/r300_shader_semantics.h index 85184e2cfd7..6796841b29b 100644 --- a/src/gallium/drivers/r300/r300_shader_semantics.h +++ b/src/gallium/drivers/r300/r300_shader_semantics.h @@ -40,6 +40,7 @@ struct r300_shader_semantics { int bcolor[ATTR_COLOR_COUNT]; int generic[ATTR_GENERIC_COUNT]; int fog; + int wpos; }; static INLINE void r300_shader_semantics_reset( @@ -50,6 +51,7 @@ static INLINE void r300_shader_semantics_reset( info->pos = ATTR_UNUSED; info->psize = ATTR_UNUSED; info->fog = ATTR_UNUSED; + info->wpos = ATTR_UNUSED; for (i = 0; i < ATTR_COLOR_COUNT; i++) { info->color[i] = ATTR_UNUSED; diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index 872a393321d..ad8e210dcd8 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -719,6 +719,9 @@ static void r300_bind_rs_state(struct pipe_context* pipe, void* state) r300->dirty_state |= R300_NEW_RS_BLOCK; r300->dirty_state |= R300_NEW_SCISSOR; r300->dirty_state |= R300_NEW_VIEWPORT; + if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) { + r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS; + } } /* Free rasterizer state. */ @@ -897,6 +900,9 @@ static void r300_set_viewport_state(struct pipe_context* pipe, } r300->dirty_state |= R300_NEW_VIEWPORT; + if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) { + r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS; + } } static void r300_set_vertex_buffers(struct pipe_context* pipe, diff --git a/src/gallium/drivers/r300/r300_state_derived.c b/src/gallium/drivers/r300/r300_state_derived.c index 727ae7ade6d..242716fcccb 100644 --- a/src/gallium/drivers/r300/r300_state_derived.c +++ b/src/gallium/drivers/r300/r300_state_derived.c @@ -410,6 +410,26 @@ static void r300_update_rs_block(struct r300_context* r300, } } + /* Rasterize WPOS. */ + if (vs_outputs->wpos != ATTR_UNUSED) { + /* Always rasterize if it's written by the VS, + * otherwise it locks up. */ + rX00_rs_tex(rs, tex_count, tex_count, FALSE); + + /* Write it to the FS input register if it's used by the FS. */ + if (fs_inputs->wpos != ATTR_UNUSED) { + rX00_rs_tex_write(rs, tex_count, fp_offset); + fp_offset++; + } + tex_count++; + } else { + /* Skip the FS input register, leave it uninitialized. */ + /* If we try to set it to (0,0,0,1), it will lock up. */ + if (fs_inputs->wpos != ATTR_UNUSED) { + fp_offset++; + } + } + /* Rasterize at least one color, or bad things happen. */ if (col_count == 0 && tex_count == 0) { rX00_rs_col(rs, 0, 0, TRUE); diff --git a/src/gallium/drivers/r300/r300_vs.c b/src/gallium/drivers/r300/r300_vs.c index c4ed0d712f9..57531fc554f 100644 --- a/src/gallium/drivers/r300/r300_vs.c +++ b/src/gallium/drivers/r300/r300_vs.c @@ -33,6 +33,8 @@ #include "radeon_compiler.h" +#include "util/u_math.h" + /* Convert info about VS output semantics into r300_shader_semantics. */ static void r300_shader_read_vs_outputs( struct tgsi_shader_info* info, @@ -144,6 +146,13 @@ static void r300_shader_vap_output_fmt( gen_count++; } + /* WPOS. */ + if (vs_outputs->wpos != ATTR_UNUSED) { + hwfmt[1] |= (R300_INPUT_CNTL_TC0 << gen_count); + hwfmt[3] |= (4 << (3 * gen_count)); + gen_count++; + } + /* XXX magic */ assert(gen_count <= 8); } @@ -195,6 +204,13 @@ static void r300_stream_locations_notcl( gen_count++; } + /* WPOS. */ + if (vs_outputs->wpos != ATTR_UNUSED) { + assert(tabi < 16); + stream_loc[tabi++] = 6 + gen_count; + gen_count++; + } + /* XXX magic */ assert(gen_count <= 8); @@ -246,6 +262,33 @@ static void set_vertex_inputs_outputs(struct r300_vertex_program_compiler * c) if (outputs->fog != ATTR_UNUSED) { c->code->outputs[outputs->fog] = reg++; } + + /* WPOS. */ + if (outputs->wpos != ATTR_UNUSED) { + c->code->outputs[outputs->wpos] = reg++; + } +} + +static void r300_insert_wpos(struct r300_vertex_program_compiler* c, + struct r300_shader_semantics* outputs) +{ + int i, lastOutput = 0; + + /* Find the max output index. */ + lastOutput = MAX2(lastOutput, outputs->psize); + for (i = 0; i < ATTR_COLOR_COUNT; i++) { + lastOutput = MAX2(lastOutput, outputs->color[i]); + lastOutput = MAX2(lastOutput, outputs->bcolor[i]); + } + for (i = 0; i < ATTR_GENERIC_COUNT; i++) { + lastOutput = MAX2(lastOutput, outputs->generic[i]); + } + lastOutput = MAX2(lastOutput, outputs->fog); + + /* Set WPOS after the last output. */ + lastOutput++; + rc_copy_output(&c->Base, 0, lastOutput); /* out[lastOutput] = out[0]; */ + outputs->wpos = lastOutput; } void r300_translate_vertex_shader(struct r300_context* r300, @@ -253,11 +296,10 @@ void r300_translate_vertex_shader(struct r300_context* r300, { struct r300_vertex_program_compiler compiler; struct tgsi_to_rc ttr; + boolean use_wpos = TRUE; /* Initialize. */ r300_shader_read_vs_outputs(&vs->info, &vs->outputs); - r300_shader_vap_output_fmt(&vs->outputs, vs->hwfmt); - r300_stream_locations_notcl(&vs->outputs, vs->stream_loc_notcl); /* Setup the compiler */ rc_init(&compiler.Base); @@ -277,9 +319,17 @@ void r300_translate_vertex_shader(struct r300_context* r300, r300_tgsi_to_rc(&ttr, vs->state.tokens); - compiler.RequiredOutputs = ~(~0 << vs->info.num_outputs); + compiler.RequiredOutputs = ~(~0 << (vs->info.num_outputs+use_wpos)); compiler.SetHwInputOutput = &set_vertex_inputs_outputs; + /* Insert the WPOS output. */ + if (use_wpos) { + r300_insert_wpos(&compiler, &vs->outputs); + } + + r300_shader_vap_output_fmt(&vs->outputs, vs->hwfmt); + r300_stream_locations_notcl(&vs->outputs, vs->stream_loc_notcl); + /* Invoke the compiler */ r3xx_compile_vertex_program(&compiler); if (compiler.Base.Error) { -- 2.30.2