Mesa (master): r300g: nuke the fallback for fragment color clamping

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 7023ed9e622a3a080ccc6a2739ba1ccd8775a345
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7023ed9e622a3a080ccc6a2739ba1ccd8775a345

Author: Marek Olšák <maraeo at gmail.com>
Date:   Mon Jan 23 03:38:39 2012 +0100

r300g: nuke the fallback for fragment color clamping

---

 src/gallium/drivers/r300/compiler/r3xx_fragprog.c |   21 ---------------------
 src/gallium/drivers/r300/compiler/radeon_code.h   |    2 --
 src/gallium/drivers/r300/r300_context.h           |    2 --
 src/gallium/drivers/r300/r300_fs.c                |    3 ---
 src/gallium/drivers/r300/r300_state.c             |    8 --------
 5 files changed, 0 insertions(+), 36 deletions(-)

diff --git a/src/gallium/drivers/r300/compiler/r3xx_fragprog.c b/src/gallium/drivers/r300/compiler/r3xx_fragprog.c
index 3bee2b6..8fea4db 100644
--- a/src/gallium/drivers/r300/compiler/r3xx_fragprog.c
+++ b/src/gallium/drivers/r300/compiler/r3xx_fragprog.c
@@ -78,32 +78,12 @@ static void rc_rewrite_depth_out(struct radeon_compiler *cc, void *user)
 	}
 }
 
-static int radeon_saturate_output(
-		struct radeon_compiler * c,
-		struct rc_instruction * inst,
-		void* data)
-{
-	const struct rc_opcode_info *info = rc_get_opcode_info(inst->U.I.Opcode);
-
-	if (!info->HasDstReg || inst->U.I.DstReg.File != RC_FILE_OUTPUT)
-		return 0;
-
-	inst->U.I.SaturateMode = RC_SATURATE_ZERO_ONE;
-	return 1;
-}
-
 void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c)
 {
 	int is_r500 = c->Base.is_r500;
 	int opt = !c->Base.disable_optimizations;
-	int sat_out = c->state.frag_clamp;
 
 	/* Lists of instruction transformations. */
-	struct radeon_program_transformation saturate_output[] = {
-		{ &radeon_saturate_output, c },
-		{ 0, 0 }
-	};
-
 	struct radeon_program_transformation rewrite_tex[] = {
 		{ &radeonTransformTEX, c },
 		{ 0, 0 }
@@ -137,7 +117,6 @@ void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c)
 		{"unroll loops",		1, is_r500,	rc_unroll_loops,		NULL},
 		{"transform loops",		1, !is_r500,	rc_transform_loops,		NULL},
 		{"emulate branches",		1, !is_r500,	rc_emulate_branches,		NULL},
-		{"saturate output writes",	1, sat_out,	rc_local_transform,		saturate_output},
 		{"transform TEX",		1, 1,		rc_local_transform,		rewrite_tex},
 		{"transform IF",		1, is_r500,	rc_local_transform,		rewrite_if},
 		{"native rewrite",		1, is_r500,	rc_local_transform,		native_rewrite_r500},
diff --git a/src/gallium/drivers/r300/compiler/radeon_code.h b/src/gallium/drivers/r300/compiler/radeon_code.h
index 67e6acf..4280d66 100644
--- a/src/gallium/drivers/r300/compiler/radeon_code.h
+++ b/src/gallium/drivers/r300/compiler/radeon_code.h
@@ -179,8 +179,6 @@ struct r300_fragment_program_external_state {
 		 */
 		unsigned convert_unorm_to_snorm:1;
 	} unit[16];
-
-	unsigned frag_clamp:1;
 };
 
 
diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h
index e40b7af..f32504c 100644
--- a/src/gallium/drivers/r300/r300_context.h
+++ b/src/gallium/drivers/r300/r300_context.h
@@ -569,8 +569,6 @@ struct r300_context {
     int sprite_coord_enable;
     /* Whether two-sided color selection is enabled (AKA light_twoside). */
     boolean two_sided_color;
-    /* Whether fragment color clamping is enabled. */
-    boolean frag_clamp;
     /* Whether fast color clear is enabled. */
     boolean cbzb_clear;
     /* Whether fragment shader needs to be validated. */
diff --git a/src/gallium/drivers/r300/r300_fs.c b/src/gallium/drivers/r300/r300_fs.c
index 320f398..051b292 100644
--- a/src/gallium/drivers/r300/r300_fs.c
+++ b/src/gallium/drivers/r300/r300_fs.c
@@ -147,11 +147,8 @@ static void get_external_state(
     struct r300_fragment_program_external_state* state)
 {
     struct r300_textures_state *texstate = r300->textures_state.state;
-    struct r300_rs_state *rs = r300->rs_state.state;
     unsigned i;
 
-    state->frag_clamp = rs ? rs->rs.clamp_fragment_color : 0;
-
     for (i = 0; i < texstate->sampler_state_count; i++) {
         struct r300_sampler_state *s = texstate->sampler_states[i];
         struct r300_sampler_view *v = texstate->sampler_views[i];
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 5d4a895..33fdf3b 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -1231,7 +1231,6 @@ static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
     struct r300_rs_state* rs = (struct r300_rs_state*)state;
     int last_sprite_coord_enable = r300->sprite_coord_enable;
     boolean last_two_sided_color = r300->two_sided_color;
-    boolean last_frag_clamp = r300->frag_clamp;
 
     if (r300->draw && rs) {
         draw_set_rasterizer_state(r300->draw, &rs->rs_draw, state);
@@ -1241,12 +1240,10 @@ static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
         r300->polygon_offset_enabled = rs->polygon_offset_enable;
         r300->sprite_coord_enable = rs->rs.sprite_coord_enable;
         r300->two_sided_color = rs->rs.light_twoside;
-        r300->frag_clamp = rs->rs.clamp_fragment_color;
     } else {
         r300->polygon_offset_enabled = FALSE;
         r300->sprite_coord_enable = 0;
         r300->two_sided_color = FALSE;
-        r300->frag_clamp = FALSE;
     }
 
     UPDATE_STATE(state, r300->rs_state);
@@ -1256,11 +1253,6 @@ static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
         last_two_sided_color != r300->two_sided_color) {
         r300_mark_atom_dirty(r300, &r300->rs_block_state);
     }
-
-    if (last_frag_clamp != r300->frag_clamp &&
-        r300->fs_status == FRAGMENT_SHADER_VALID) {
-        r300->fs_status = FRAGMENT_SHADER_MAYBE_DIRTY;
-    }
 }
 
 /* Free rasterizer state. */