diff options
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_tex_sample.c')
-rw-r--r-- | src/gallium/drivers/softpipe/sp_tex_sample.c | 94 |
1 files changed, 92 insertions, 2 deletions
diff --git a/src/gallium/drivers/softpipe/sp_tex_sample.c b/src/gallium/drivers/softpipe/sp_tex_sample.c index 2eac4c7a82..acd94f3260 100644 --- a/src/gallium/drivers/softpipe/sp_tex_sample.c +++ b/src/gallium/drivers/softpipe/sp_tex_sample.c @@ -1731,6 +1731,86 @@ sample_cube(struct tgsi_sampler *tgsi_sampler, } +static void +sample_swizzle(struct tgsi_sampler *tgsi_sampler, + const float s[QUAD_SIZE], + const float t[QUAD_SIZE], + const float p[QUAD_SIZE], + const float c0[QUAD_SIZE], + enum tgsi_sampler_control control, + float rgba[NUM_CHANNELS][QUAD_SIZE]) +{ + struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler); + float rgba_temp[NUM_CHANNELS][QUAD_SIZE]; + const unsigned swizzle_r = samp->key.bits.swizzle_r; + const unsigned swizzle_g = samp->key.bits.swizzle_g; + const unsigned swizzle_b = samp->key.bits.swizzle_b; + const unsigned swizzle_a = samp->key.bits.swizzle_a; + unsigned j; + + samp->sample_target(tgsi_sampler, s, t, p, c0, control, rgba_temp); + + switch (swizzle_r) { + case PIPE_SWIZZLE_ZERO: + for (j = 0; j < 4; j++) + rgba[0][j] = 0.0f; + break; + case PIPE_SWIZZLE_ONE: + for (j = 0; j < 4; j++) + rgba[0][j] = 1.0f; + break; + default: + assert(swizzle_r < 4); + for (j = 0; j < 4; j++) + rgba[0][j] = rgba_temp[swizzle_r][j]; + } + + switch (swizzle_g) { + case PIPE_SWIZZLE_ZERO: + for (j = 0; j < 4; j++) + rgba[1][j] = 0.0f; + break; + case PIPE_SWIZZLE_ONE: + for (j = 0; j < 4; j++) + rgba[1][j] = 1.0f; + break; + default: + assert(swizzle_g < 4); + for (j = 0; j < 4; j++) + rgba[1][j] = rgba_temp[swizzle_g][j]; + } + + switch (swizzle_b) { + case PIPE_SWIZZLE_ZERO: + for (j = 0; j < 4; j++) + rgba[2][j] = 0.0f; + break; + case PIPE_SWIZZLE_ONE: + for (j = 0; j < 4; j++) + rgba[2][j] = 1.0f; + break; + default: + assert(swizzle_b < 4); + for (j = 0; j < 4; j++) + rgba[2][j] = rgba_temp[swizzle_b][j]; + } + + switch (swizzle_a) { + case PIPE_SWIZZLE_ZERO: + for (j = 0; j < 4; j++) + rgba[3][j] = 0.0f; + break; + case PIPE_SWIZZLE_ONE: + for (j = 0; j < 4; j++) + rgba[3][j] = 1.0f; + break; + default: + assert(swizzle_a < 4); + for (j = 0; j < 4; j++) + rgba[3][j] = rgba_temp[swizzle_a][j]; + } +} + static wrap_nearest_func get_nearest_unorm_wrap(unsigned mode) @@ -2015,7 +2095,7 @@ sp_create_sampler_varient( const struct pipe_sampler_state *sampler, } if (key.bits.target == PIPE_TEXTURE_CUBE) { - samp->base.get_samples = sample_cube; + samp->sample_target = sample_cube; } else { samp->faces[0] = 0; @@ -2026,7 +2106,17 @@ sp_create_sampler_varient( const struct pipe_sampler_state *sampler, /* Skip cube face determination by promoting the compare * function pointer: */ - samp->base.get_samples = samp->compare; + samp->sample_target = samp->compare; + } + + if (key.bits.swizzle_r != PIPE_SWIZZLE_RED || + key.bits.swizzle_g != PIPE_SWIZZLE_GREEN || + key.bits.swizzle_b != PIPE_SWIZZLE_BLUE || + key.bits.swizzle_a != PIPE_SWIZZLE_ALPHA) { + samp->base.get_samples = sample_swizzle; + } + else { + samp->base.get_samples = samp->sample_target; } return samp; |