Mesa (master): Revert "r600g: truncate point sampled texture coordinates"

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 72c6a748b9ffdaa893f82faf911f22a241a5e4f5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=72c6a748b9ffdaa893f82faf911f22a241a5e4f5

Author: Marek Olšák <maraeo at gmail.com>
Date:   Mon May  2 01:10:19 2011 +0200

Revert "r600g: truncate point sampled texture coordinates"

This reverts commit 1dc204d145dc8c0b19473a7814c201a8954b6274.

MC_COORD_TRUNCATE is for MPEG and produces quite an interesting behavior
on regular textures. Anyway that commit broke filtering in demos/cubemap.

---

 src/gallium/drivers/r600/evergreen_state.c |    6 ------
 src/gallium/drivers/r600/r600_state.c      |    9 +--------
 2 files changed, 1 insertions(+), 14 deletions(-)

diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
index 89a8d94..e316ffd 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -307,16 +307,11 @@ static void *evergreen_create_sampler_state(struct pipe_context *ctx,
 {
 	struct r600_pipe_state *rstate = CALLOC_STRUCT(r600_pipe_state);
 	union util_color uc;
-	uint32_t coord_trunc = 0;
 
 	if (rstate == NULL) {
 		return NULL;
 	}
 
-	if ((state->mag_img_filter == PIPE_TEX_FILTER_NEAREST) ||
-	    (state->min_img_filter == PIPE_TEX_FILTER_NEAREST))
-		coord_trunc = 1;
-
 	rstate->id = R600_PIPE_STATE_SAMPLER;
 	util_pack_color(state->border_color, PIPE_FORMAT_B8G8R8A8_UNORM, &uc);
 	r600_pipe_state_add_reg(rstate, R_03C000_SQ_TEX_SAMPLER_WORD0_0,
@@ -335,7 +330,6 @@ static void *evergreen_create_sampler_state(struct pipe_context *ctx,
 			0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_03C008_SQ_TEX_SAMPLER_WORD2_0,
 				S_03C008_LOD_BIAS(S_FIXED(CLAMP(state->lod_bias, -16, 16), 8)) |
-				S_03C008_MC_COORD_TRUNCATE(coord_trunc) |
 				S_03C008_TYPE(1),
 				0xFFFFFFFF, NULL);
 
diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
index 1e3f815..f23c196 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -366,16 +366,11 @@ static void *r600_create_sampler_state(struct pipe_context *ctx,
 {
 	struct r600_pipe_state *rstate = CALLOC_STRUCT(r600_pipe_state);
 	union util_color uc;
-	uint32_t coord_trunc = 0;
 
 	if (rstate == NULL) {
 		return NULL;
 	}
 
-	if ((state->mag_img_filter == PIPE_TEX_FILTER_NEAREST) ||
-	    (state->min_img_filter == PIPE_TEX_FILTER_NEAREST))
-		coord_trunc = 1;
-
 	rstate->id = R600_PIPE_STATE_SAMPLER;
 	util_pack_color(state->border_color, PIPE_FORMAT_B8G8R8A8_UNORM, &uc);
 	r600_pipe_state_add_reg(rstate, R_03C000_SQ_TEX_SAMPLER_WORD0_0,
@@ -392,9 +387,7 @@ static void *r600_create_sampler_state(struct pipe_context *ctx,
 			S_03C004_MIN_LOD(S_FIXED(CLAMP(state->min_lod, 0, 15), 6)) |
 			S_03C004_MAX_LOD(S_FIXED(CLAMP(state->max_lod, 0, 15), 6)) |
 			S_03C004_LOD_BIAS(S_FIXED(CLAMP(state->lod_bias, -16, 16), 6)), 0xFFFFFFFF, NULL);
-	r600_pipe_state_add_reg(rstate, R_03C008_SQ_TEX_SAMPLER_WORD2_0,
-				S_03C008_MC_COORD_TRUNCATE(coord_trunc) |
-				S_03C008_TYPE(1), 0xFFFFFFFF, NULL);
+	r600_pipe_state_add_reg(rstate, R_03C008_SQ_TEX_SAMPLER_WORD2_0, S_03C008_TYPE(1), 0xFFFFFFFF, NULL);
 	if (uc.ui) {
 		r600_pipe_state_add_reg(rstate, R_00A400_TD_PS_SAMPLER0_BORDER_RED, fui(state->border_color[0]), 0xFFFFFFFF, NULL);
 		r600_pipe_state_add_reg(rstate, R_00A404_TD_PS_SAMPLER0_BORDER_GREEN, fui(state->border_color[1]), 0xFFFFFFFF, NULL);