From c9c8a5ed02408495b3132cabd7947cc352a117a2 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Sat, 18 Dec 2010 10:34:35 +1000 Subject: [PATCH] gallium: add fragment shader property for color writes to all buffers. (v2) For GL fragColor semantics we need to tell the pipe drivers that the fragment shader color result is to be replicated to all bound color buffers, this adds the basic TGSI + documentation. v2: fix missing comma pointed out by Tilman on mesa-dev. Signed-off-by: Dave Airlie --- src/gallium/auxiliary/tgsi/tgsi_text.c | 5 ++++- src/gallium/auxiliary/tgsi/tgsi_ureg.c | 16 +++++++++++++++- src/gallium/auxiliary/tgsi/tgsi_ureg.h | 4 ++++ src/gallium/docs/source/tgsi.rst | 5 +++++ src/gallium/include/pipe/p_shader_tokens.h | 3 ++- 5 files changed, 30 insertions(+), 3 deletions(-) diff --git a/src/gallium/auxiliary/tgsi/tgsi_text.c b/src/gallium/auxiliary/tgsi/tgsi_text.c index 9a38c37979c..ccb17b77504 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_text.c +++ b/src/gallium/auxiliary/tgsi/tgsi_text.c @@ -1264,7 +1264,8 @@ static const char *property_names[] = "GS_OUTPUT_PRIMITIVE", "GS_MAX_OUTPUT_VERTICES", "FS_COORD_ORIGIN", - "FS_COORD_PIXEL_CENTER" + "FS_COORD_PIXEL_CENTER", + "FS_COLOR0_WRITE_ALL_CBUFS" }; static const char *primitive_names[] = @@ -1398,6 +1399,8 @@ static boolean parse_property( struct translate_ctx *ctx ) return FALSE; } break; + case TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS: + break; default: if (!parse_uint(&ctx->cur, &values[0] )) { report_error( ctx, "Expected unsigned integer as property!" ); diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.c b/src/gallium/auxiliary/tgsi/tgsi_ureg.c index 7d13a17bdbc..02de12d77d5 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_ureg.c +++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.c @@ -148,6 +148,7 @@ struct ureg_program unsigned property_gs_max_vertices; unsigned char property_fs_coord_origin; /* = TGSI_FS_COORD_ORIGIN_* */ unsigned char property_fs_coord_pixel_center; /* = TGSI_FS_COORD_PIXEL_CENTER_* */ + unsigned char property_fs_color0_writes_all_cbufs; /* = TGSI_FS_COLOR0_WRITES_ALL_CBUFS * */ unsigned nr_addrs; unsigned nr_preds; @@ -284,7 +285,12 @@ ureg_property_fs_coord_pixel_center(struct ureg_program *ureg, ureg->property_fs_coord_pixel_center = fs_coord_pixel_center; } - +void +ureg_property_fs_color0_writes_all_cbufs(struct ureg_program *ureg, + unsigned fs_color0_writes_all_cbufs) +{ + ureg->property_fs_color0_writes_all_cbufs = fs_color0_writes_all_cbufs; +} struct ureg_src ureg_DECL_fs_input_cyl_centroid(struct ureg_program *ureg, @@ -1278,6 +1284,14 @@ static void emit_decls( struct ureg_program *ureg ) ureg->property_fs_coord_pixel_center); } + if (ureg->property_fs_color0_writes_all_cbufs) { + assert(ureg->processor == TGSI_PROCESSOR_FRAGMENT); + + emit_property(ureg, + TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS, + ureg->property_fs_color0_writes_all_cbufs); + } + if (ureg->processor == TGSI_PROCESSOR_VERTEX) { for (i = 0; i < UREG_MAX_INPUT; i++) { if (ureg->vs_inputs[i/32] & (1 << (i%32))) { diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.h b/src/gallium/auxiliary/tgsi/tgsi_ureg.h index acc463200a6..807128a5e52 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_ureg.h +++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.h @@ -153,6 +153,10 @@ void ureg_property_fs_coord_pixel_center(struct ureg_program *ureg, unsigned fs_coord_pixel_center); +void +ureg_property_fs_color0_writes_all_cbufs(struct ureg_program *ureg, + unsigned fs_color0_writes_all_cbufs); + /*********************************************************************** * Build shader declarations: */ diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 7eb6bd05d7b..d986e6601e6 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -1516,6 +1516,11 @@ GL_ARB_fragment_coord_conventions extension. DirectX 9 uses INTEGER. DirectX 10 uses HALF_INTEGER. +FS_COLOR0_WRITES_ALL_CBUFS +"""""""""""""""""""""""""" +Specifies that writes to the fragment shader color 0 are replicated to all +bound cbufs. This facilitates OpenGL's fragColor output vs fragData[0] where +fragData is directed to a single color buffer, but fragColor is broadcast. Texture Sampling and Texture Formats diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h index ba433b2bd2a..0a9e14154d7 100644 --- a/src/gallium/include/pipe/p_shader_tokens.h +++ b/src/gallium/include/pipe/p_shader_tokens.h @@ -177,7 +177,8 @@ union tgsi_immediate_data #define TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES 2 #define TGSI_PROPERTY_FS_COORD_ORIGIN 3 #define TGSI_PROPERTY_FS_COORD_PIXEL_CENTER 4 -#define TGSI_PROPERTY_COUNT 5 +#define TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS 5 +#define TGSI_PROPERTY_COUNT 6 struct tgsi_property { unsigned Type : 4; /**< TGSI_TOKEN_TYPE_PROPERTY */ -- 2.30.2