diff options
Diffstat (limited to 'src/gallium/drivers/softpipe')
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_tex_sample.c | 49 |
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: |