summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/r300/r300_state.c
diff options
context:
space:
mode:
authorMarek Olšák <maraeo@gmail.com>2011-02-16 00:50:25 +0100
committerMarek Olšák <maraeo@gmail.com>2011-03-04 17:47:56 +0100
commitbdb811772fe1b11e32172b211d9935d37093c753 (patch)
treee5c6f994cb01346dfed0ed283643016059a4bcce /src/gallium/drivers/r300/r300_state.c
parent10a893106be9dc4c843100468d8575b07ba6c4b9 (diff)
downloadexternal_mesa3d-bdb811772fe1b11e32172b211d9935d37093c753.zip
external_mesa3d-bdb811772fe1b11e32172b211d9935d37093c753.tar.gz
external_mesa3d-bdb811772fe1b11e32172b211d9935d37093c753.tar.bz2
r300g: preliminary implementation of clamping controls
Diffstat (limited to 'src/gallium/drivers/r300/r300_state.c')
-rw-r--r--src/gallium/drivers/r300/r300_state.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 1878293..2b0c875 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -192,6 +192,7 @@ static void* r300_create_blend_state(struct pipe_context* pipe,
uint32_t color_channel_mask = 0; /* R300_RB3D_COLOR_CHANNEL_MASK: 0x4e0c */
uint32_t rop = 0; /* R300_RB3D_ROPCNTL: 0x4e18 */
uint32_t dither = 0; /* R300_RB3D_DITHER_CTL: 0x4e50 */
+ boolean clamp = TRUE;
CB_LOCALS;
if (state->rt[0].blend_enable)
@@ -207,7 +208,7 @@ static void* r300_create_blend_state(struct pipe_context* pipe,
/* despite the name, ALPHA_BLEND_ENABLE has nothing to do with alpha,
* this is just the crappy D3D naming */
blend_control = R300_ALPHA_BLEND_ENABLE |
- r300_translate_blend_function(eqRGB) |
+ r300_translate_blend_function(eqRGB, clamp) |
( r300_translate_blend_factor(srcRGB) << R300_SRC_BLEND_SHIFT) |
( r300_translate_blend_factor(dstRGB) << R300_DST_BLEND_SHIFT);
@@ -268,7 +269,8 @@ static void* r300_create_blend_state(struct pipe_context* pipe,
*
* Equations other than ADD are rarely used and therefore won't be
* optimized. */
- if ((eqRGB == PIPE_BLEND_ADD || eqRGB == PIPE_BLEND_REVERSE_SUBTRACT) &&
+ if (clamp &&
+ (eqRGB == PIPE_BLEND_ADD || eqRGB == PIPE_BLEND_REVERSE_SUBTRACT) &&
(eqA == PIPE_BLEND_ADD || eqA == PIPE_BLEND_REVERSE_SUBTRACT)) {
/* ADD: X+Y
* REVERSE_SUBTRACT: Y-X
@@ -307,7 +309,7 @@ static void* r300_create_blend_state(struct pipe_context* pipe,
if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) {
blend_control |= R300_SEPARATE_ALPHA_ENABLE;
alpha_blend_control =
- r300_translate_blend_function(eqA) |
+ r300_translate_blend_function(eqA, clamp) |
(r300_translate_blend_factor(srcA) << R300_SRC_BLEND_SHIFT) |
(r300_translate_blend_factor(dstA) << R300_DST_BLEND_SHIFT);
}
@@ -1014,12 +1016,14 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
uint32_t line_stipple_value; /* R300_GA_LINE_STIPPLE_VALUE: 0x4260 */
uint32_t polygon_mode; /* R300_GA_POLY_MODE: 0x4288 */
uint32_t clip_rule; /* R300_SC_CLIP_RULE: 0x43D0 */
+ uint32_t round_mode; /* R300_GA_ROUND_MODE: 0x428c */
/* Point sprites texture coordinates, 0: lower left, 1: upper right */
float point_texcoord_left = 0; /* R300_GA_POINT_S0: 0x4200 */
float point_texcoord_bottom = 0;/* R300_GA_POINT_T0: 0x4204 */
float point_texcoord_right = 1; /* R300_GA_POINT_S1: 0x4208 */
float point_texcoord_top = 0; /* R300_GA_POINT_T1: 0x420c */
+ boolean vclamp = TRUE;
CB_LOCALS;
/* Copy rasterizer state. */
@@ -1142,6 +1146,12 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
}
}
+ /* Vertex color clamping. FP20 means no clamping. */
+ round_mode =
+ R300_GA_ROUND_MODE_GEOMETRY_ROUND_NEAREST |
+ (!vclamp ? (R300_GA_ROUND_MODE_RGB_CLAMP_FP20 |
+ R300_GA_ROUND_MODE_ALPHA_CLAMP_FP20) : 0);
+
/* Build the main command buffer. */
BEGIN_CB(rs->cb_main, RS_STATE_MAIN_SIZE);
OUT_CB_REG(R300_VAP_CNTL_STATUS, vap_control_status);
@@ -1156,6 +1166,7 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
OUT_CB_REG(R300_GA_LINE_STIPPLE_CONFIG, line_stipple_config);
OUT_CB_REG(R300_GA_LINE_STIPPLE_VALUE, line_stipple_value);
OUT_CB_REG(R300_GA_POLY_MODE, polygon_mode);
+ OUT_CB_REG(R300_GA_ROUND_MODE, round_mode);
OUT_CB_REG(R300_SC_CLIP_RULE, clip_rule);
OUT_CB_REG_SEQ(R300_GA_POINT_S0, 4);
OUT_CB_32F(point_texcoord_left);