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-rw-r--r--src/gallium/drivers/softpipe/sp_tex_sample.c49
1 files changed, 43 insertions, 6 deletions
diff --git a/src/gallium/drivers/softpipe/sp_tex_sample.c b/src/gallium/drivers/softpipe/sp_tex_sample.c
index b3a79732b46..ef7ccf41898 100644
--- a/src/gallium/drivers/softpipe/sp_tex_sample.c
+++ b/src/gallium/drivers/softpipe/sp_tex_sample.c
@@ -437,8 +437,7 @@ wrap_linear_mirror_clamp_to_border(const float s[4], unsigned size,
/**
- * For RECT textures / unnormalized texcoords
- * Only a subset of wrap modes supported.
+ * PIPE_TEX_WRAP_CLAMP for nearest sampling, unnormalized coords.
*/
static void
wrap_nearest_unorm_clamp(const float s[4], unsigned size, int icoord[4])
@@ -452,7 +451,7 @@ wrap_nearest_unorm_clamp(const float s[4], unsigned size, int icoord[4])
/**
- * Handles clamp_to_edge and clamp_to_border:
+ * PIPE_TEX_WRAP_CLAMP_TO_BORDER for nearest sampling, unnormalized coords.
*/
static void
wrap_nearest_unorm_clamp_to_border(const float s[4], unsigned size,
@@ -460,14 +459,27 @@ wrap_nearest_unorm_clamp_to_border(const float s[4], unsigned size,
{
uint ch;
for (ch = 0; ch < 4; ch++) {
+ icoord[ch]= util_ifloor( CLAMP(s[ch], -0.5F, (float) size + 0.5F) );
+ }
+}
+
+
+/**
+ * PIPE_TEX_WRAP_CLAMP_TO_EDGE for nearest sampling, unnormalized coords.
+ */
+static void
+wrap_nearest_unorm_clamp_to_edge(const float s[4], unsigned size,
+ int icoord[4])
+{
+ uint ch;
+ for (ch = 0; ch < 4; ch++) {
icoord[ch]= util_ifloor( CLAMP(s[ch], 0.5F, (float) size - 0.5F) );
}
}
/**
- * For RECT textures / unnormalized texcoords.
- * Only a subset of wrap modes supported.
+ * PIPE_TEX_WRAP_CLAMP for linear sampling, unnormalized coords.
*/
static void
wrap_linear_unorm_clamp(const float s[4], unsigned size,
@@ -484,13 +496,36 @@ wrap_linear_unorm_clamp(const float s[4], unsigned size,
}
+/**
+ * PIPE_TEX_WRAP_CLAMP_TO_BORDER for linear sampling, unnormalized coords.
+ */
static void
wrap_linear_unorm_clamp_to_border(const float s[4], unsigned size,
int icoord0[4], int icoord1[4], float w[4])
{
uint ch;
for (ch = 0; ch < 4; ch++) {
- float u = CLAMP(s[ch], 0.5F, (float) size - 0.5F);
+ float u = CLAMP(s[ch], -0.5F, (float) size + 0.5F);
+ u -= 0.5F;
+ icoord0[ch] = util_ifloor(u);
+ icoord1[ch] = icoord0[ch] + 1;
+ if (icoord1[ch] > (int) size - 1)
+ icoord1[ch] = size - 1;
+ w[ch] = frac(u);
+ }
+}
+
+
+/**
+ * PIPE_TEX_WRAP_CLAMP_TO_EDGE for linear sampling, unnormalized coords.
+ */
+static void
+wrap_linear_unorm_clamp_to_edge(const float s[4], unsigned size,
+ int icoord0[4], int icoord1[4], float w[4])
+{
+ uint ch;
+ for (ch = 0; ch < 4; ch++) {
+ float u = CLAMP(s[ch], +0.5F, (float) size - 0.5F);
u -= 0.5F;
icoord0[ch] = util_ifloor(u);
icoord1[ch] = icoord0[ch] + 1;
@@ -1707,6 +1742,7 @@ get_nearest_unorm_wrap(unsigned mode)
case PIPE_TEX_WRAP_CLAMP:
return wrap_nearest_unorm_clamp;
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ return wrap_nearest_unorm_clamp_to_edge;
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
return wrap_nearest_unorm_clamp_to_border;
default:
@@ -1750,6 +1786,7 @@ get_linear_unorm_wrap(unsigned mode)
case PIPE_TEX_WRAP_CLAMP:
return wrap_linear_unorm_clamp;
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ return wrap_linear_unorm_clamp_to_edge;
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
return wrap_linear_unorm_clamp_to_border;
default: