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-rw-r--r--src/gallium/drivers/r300/r300_state.c30
1 files changed, 27 insertions, 3 deletions
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 9799f0c522..488e23a917 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -1013,10 +1013,34 @@ static void*
sampler->state = *state;
+ /* r300 doesn't handle CLAMP and MIRROR_CLAMP correctly when either MAG
+ * or MIN filter is NEAREST. Since texwrap produces same results
+ * for CLAMP and CLAMP_TO_EDGE, we use them instead. */
+ if (sampler->state.min_img_filter == PIPE_TEX_FILTER_NEAREST ||
+ sampler->state.mag_img_filter == PIPE_TEX_FILTER_NEAREST) {
+ /* Wrap S. */
+ if (sampler->state.wrap_s == PIPE_TEX_WRAP_CLAMP)
+ sampler->state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ else if (sampler->state.wrap_s == PIPE_TEX_WRAP_MIRROR_CLAMP)
+ sampler->state.wrap_s = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
+
+ /* Wrap T. */
+ if (sampler->state.wrap_t == PIPE_TEX_WRAP_CLAMP)
+ sampler->state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ else if (sampler->state.wrap_t == PIPE_TEX_WRAP_MIRROR_CLAMP)
+ sampler->state.wrap_t = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
+
+ /* Wrap R. */
+ if (sampler->state.wrap_r == PIPE_TEX_WRAP_CLAMP)
+ sampler->state.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ else if (sampler->state.wrap_r == PIPE_TEX_WRAP_MIRROR_CLAMP)
+ sampler->state.wrap_r = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
+ }
+
sampler->filter0 |=
- (r300_translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) |
- (r300_translate_wrap(state->wrap_t) << R300_TX_WRAP_T_SHIFT) |
- (r300_translate_wrap(state->wrap_r) << R300_TX_WRAP_R_SHIFT);
+ (r300_translate_wrap(sampler->state.wrap_s) << R300_TX_WRAP_S_SHIFT) |
+ (r300_translate_wrap(sampler->state.wrap_t) << R300_TX_WRAP_T_SHIFT) |
+ (r300_translate_wrap(sampler->state.wrap_r) << R300_TX_WRAP_R_SHIFT);
sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
state->mag_img_filter,