diff options
Diffstat (limited to 'src/amd/common/ac_shader_util.c')
| -rw-r--r-- | src/amd/common/ac_shader_util.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/amd/common/ac_shader_util.c b/src/amd/common/ac_shader_util.c index 030c07c49ef..eabde97348e 100644 --- a/src/amd/common/ac_shader_util.c +++ b/src/amd/common/ac_shader_util.c @@ -288,3 +288,120 @@ ac_get_fs_input_vgpr_cnt(const struct ac_shader_config *config, return num_input_vgprs; } + +void ac_choose_spi_color_formats(unsigned format, unsigned swap, + unsigned ntype, bool is_depth, + struct ac_spi_color_formats *formats) +{ + /* Alpha is needed for alpha-to-coverage. + * Blending may be with or without alpha. + */ + unsigned normal = 0; /* most optimal, may not support blending or export alpha */ + unsigned alpha = 0; /* exports alpha, but may not support blending */ + unsigned blend = 0; /* supports blending, but may not export alpha */ + unsigned blend_alpha = 0; /* least optimal, supports blending and exports alpha */ + + /* Choose the SPI color formats. These are required values for RB+. + * Other chips have multiple choices, though they are not necessarily better. + */ + switch (format) { + case V_028C70_COLOR_5_6_5: + case V_028C70_COLOR_1_5_5_5: + case V_028C70_COLOR_5_5_5_1: + case V_028C70_COLOR_4_4_4_4: + case V_028C70_COLOR_10_11_11: + case V_028C70_COLOR_11_11_10: + case V_028C70_COLOR_5_9_9_9: + case V_028C70_COLOR_8: + case V_028C70_COLOR_8_8: + case V_028C70_COLOR_8_8_8_8: + case V_028C70_COLOR_10_10_10_2: + case V_028C70_COLOR_2_10_10_10: + if (ntype == V_028C70_NUMBER_UINT) + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_UINT16_ABGR; + else if (ntype == V_028C70_NUMBER_SINT) + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_SINT16_ABGR; + else + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_FP16_ABGR; + break; + + case V_028C70_COLOR_16: + case V_028C70_COLOR_16_16: + case V_028C70_COLOR_16_16_16_16: + if (ntype == V_028C70_NUMBER_UNORM || ntype == V_028C70_NUMBER_SNORM) { + /* UNORM16 and SNORM16 don't support blending */ + if (ntype == V_028C70_NUMBER_UNORM) + normal = alpha = V_028714_SPI_SHADER_UNORM16_ABGR; + else + normal = alpha = V_028714_SPI_SHADER_SNORM16_ABGR; + + /* Use 32 bits per channel for blending. */ + if (format == V_028C70_COLOR_16) { + if (swap == V_028C70_SWAP_STD) { /* R */ + blend = V_028714_SPI_SHADER_32_R; + blend_alpha = V_028714_SPI_SHADER_32_AR; + } else if (swap == V_028C70_SWAP_ALT_REV) /* A */ + blend = blend_alpha = V_028714_SPI_SHADER_32_AR; + else + assert(0); + } else if (format == V_028C70_COLOR_16_16) { + if (swap == V_028C70_SWAP_STD) { /* RG */ + blend = V_028714_SPI_SHADER_32_GR; + blend_alpha = V_028714_SPI_SHADER_32_ABGR; + } else if (swap == V_028C70_SWAP_ALT) /* RA */ + blend = blend_alpha = V_028714_SPI_SHADER_32_AR; + else + assert(0); + } else /* 16_16_16_16 */ + blend = blend_alpha = V_028714_SPI_SHADER_32_ABGR; + } else if (ntype == V_028C70_NUMBER_UINT) + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_UINT16_ABGR; + else if (ntype == V_028C70_NUMBER_SINT) + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_SINT16_ABGR; + else if (ntype == V_028C70_NUMBER_FLOAT) + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_FP16_ABGR; + else + assert(0); + break; + + case V_028C70_COLOR_32: + if (swap == V_028C70_SWAP_STD) { /* R */ + blend = normal = V_028714_SPI_SHADER_32_R; + alpha = blend_alpha = V_028714_SPI_SHADER_32_AR; + } else if (swap == V_028C70_SWAP_ALT_REV) /* A */ + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_32_AR; + else + assert(0); + break; + + case V_028C70_COLOR_32_32: + if (swap == V_028C70_SWAP_STD) { /* RG */ + blend = normal = V_028714_SPI_SHADER_32_GR; + alpha = blend_alpha = V_028714_SPI_SHADER_32_ABGR; + } else if (swap == V_028C70_SWAP_ALT) /* RA */ + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_32_AR; + else + assert(0); + break; + + case V_028C70_COLOR_32_32_32_32: + case V_028C70_COLOR_8_24: + case V_028C70_COLOR_24_8: + case V_028C70_COLOR_X24_8_32_FLOAT: + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_32_ABGR; + break; + + default: + assert(0); + return; + } + + /* The DB->CB copy needs 32_ABGR. */ + if (is_depth) + alpha = blend = blend_alpha = normal = V_028714_SPI_SHADER_32_ABGR; + + formats->normal = normal; + formats->alpha = alpha; + formats->blend = blend; + formats->blend_alpha = blend_alpha; +} |