/* Shader output formats. This is essentially the swizzle from the shader
* to the RB3D block.
*
* Note that formats are stored from C3 to C0. */
static uint32_t r300_translate_out_fmt(enum pipe_format format)
{
uint32_t modifier = 0;
unsigned i;
const struct util_format_description *desc;
boolean uniform_sign;
desc = util_format_description(format);
/* Find the first non-VOID channel. */
for (i = 0; i < 4; i++) {
if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
break;
}
}
if (i == 4)
return ~0; /* Unsupported/unknown. */
/* Specifies how the shader output is written to the fog unit. */
switch (desc->channel[i].type) {
case UTIL_FORMAT_TYPE_FLOAT:
switch (desc->channel[i].size) {
case 32:
switch (desc->nr_channels) {
case 1:
modifier |= R300_US_OUT_FMT_C_32_FP;
break;
case 2:
modifier |= R300_US_OUT_FMT_C2_32_FP;
break;
case 4:
modifier |= R300_US_OUT_FMT_C4_32_FP;
break;
}
break;
case 16:
switch (desc->nr_channels) {
case 1:
modifier |= R300_US_OUT_FMT_C_16_FP;
break;
case 2:
modifier |= R300_US_OUT_FMT_C2_16_FP;
break;
case 4:
modifier |= R300_US_OUT_FMT_C4_16_FP;
break;
}
break;
}
break;
default:
switch (desc->channel[i].size) {
case 16:
switch (desc->nr_channels) {
case 1:
modifier |= R300_US_OUT_FMT_C_16;
break;
case 2:
modifier |= R300_US_OUT_FMT_C2_16;
break;
case 4:
modifier |= R300_US_OUT_FMT_C4_16;
break;
}
break;
case 10:
modifier |= R300_US_OUT_FMT_C4_10;
break;
default:
/* C4_8 seems to be used for the formats whose pixel size
* is <= 32 bits. */
modifier |= R300_US_OUT_FMT_C4_8;
break;
}
}
/* Add sign. */
uniform_sign = TRUE;
for (i = 0; i < desc->nr_channels; i++)
if (desc->channel[i].type != UTIL_FORMAT_TYPE_SIGNED)
uniform_sign = FALSE;
if (uniform_sign)
modifier |= R300_OUT_SIGN(0xf);
/* Add swizzles and return. */
switch (format) {
/*** Special cases (non-standard channel mapping) ***/
/* X8
* COLORFORMAT_I8 stores the Z component (C2). */
case PIPE_FORMAT_A8_UNORM:
case PIPE_FORMAT_A8_SNORM:
return modifier | R300_C2_SEL_A;
case PIPE_FORMAT_I8_UNORM:
case PIPE_FORMAT_I8_SNORM:
case PIPE_FORMAT_L8_UNORM:
case PIPE_FORMAT_L8_SNORM:
case PIPE_FORMAT_R8_UNORM:
case PIPE_FORMAT_R8_SNORM:
return modifier | R300_C2_SEL_R;
/* X8Y8
* COLORFORMAT_UV88 stores ZX (C2 and C0). */
case PIPE_FORMAT_L8A8_SNORM:
case PIPE_FORMAT_L8A8_UNORM:
case PIPE_FORMAT_R8A8_SNORM:
case PIPE_FORMAT_R8A8_UNORM:
return modifier | R300_C0_SEL_A | R300_C2_SEL_R;
case PIPE_FORMAT_R8G8_SNORM:
case PIPE_FORMAT_R8G8_UNORM:
return modifier | R300_C0_SEL_G | R300_C2_SEL_R;
/* X32Y32
* ARGB16161616 stores XZ for RG32F */
case PIPE_FORMAT_R32G32_FLOAT:
return modifier | R300_C0_SEL_R | R300_C2_SEL_G;
/*** Generic cases (standard channel mapping) ***/
/* BGRA outputs. */
case PIPE_FORMAT_B5G6R5_UNORM:
case PIPE_FORMAT_B5G5R5A1_UNORM:
case PIPE_FORMAT_B5G5R5X1_UNORM:
case PIPE_FORMAT_B4G4R4A4_UNORM:
case PIPE_FORMAT_B4G4R4X4_UNORM:
case PIPE_FORMAT_B8G8R8A8_UNORM:
/*case PIPE_FORMAT_B8G8R8A8_SNORM:*/
case PIPE_FORMAT_B8G8R8X8_UNORM:
/*case PIPE_FORMAT_B8G8R8X8_SNORM:*/
case PIPE_FORMAT_B10G10R10A2_UNORM:
case PIPE_FORMAT_B10G10R10X2_UNORM:
return modifier |
R300_C0_SEL_B | R300_C1_SEL_G |
R300_C2_SEL_R | R300_C3_SEL_A;
/* ARGB outputs. */
case PIPE_FORMAT_A16_UNORM:
case PIPE_FORMAT_A16_SNORM:
case PIPE_FORMAT_A16_FLOAT:
case PIPE_FORMAT_A32_FLOAT:
return modifier |
R300_C0_SEL_A | R300_C1_SEL_R |
R300_C2_SEL_G | R300_C3_SEL_B;
/* RGBA outputs. */
case PIPE_FORMAT_R8G8B8X8_UNORM:
case PIPE_FORMAT_R8G8B8X8_SNORM:
case PIPE_FORMAT_R8G8B8A8_UNORM:
case PIPE_FORMAT_R8G8B8A8_SNORM:
case PIPE_FORMAT_R10G10B10A2_UNORM:
case PIPE_FORMAT_R10G10B10X2_SNORM:
case PIPE_FORMAT_R16_UNORM:
case PIPE_FORMAT_R16G16_UNORM:
case PIPE_FORMAT_R16G16B16A16_UNORM:
case PIPE_FORMAT_R16_SNORM:
case PIPE_FORMAT_R16G16_SNORM:
case PIPE_FORMAT_R16G16B16A16_SNORM:
case PIPE_FORMAT_R16_FLOAT:
case PIPE_FORMAT_R16G16_FLOAT:
case PIPE_FORMAT_R16G16B16A16_FLOAT:
case PIPE_FORMAT_R32_FLOAT:
case PIPE_FORMAT_R32G32B32A32_FLOAT:
case PIPE_FORMAT_R32G32B32X32_FLOAT:
case PIPE_FORMAT_L16_UNORM:
case PIPE_FORMAT_L16_SNORM:
case PIPE_FORMAT_L16_FLOAT:
case PIPE_FORMAT_L32_FLOAT:
case PIPE_FORMAT_I16_UNORM:
case PIPE_FORMAT_I16_SNORM:
case PIPE_FORMAT_I16_FLOAT:
case PIPE_FORMAT_I32_FLOAT:
case PIPE_FORMAT_R16G16B16X16_UNORM:
case PIPE_FORMAT_R16G16B16X16_SNORM:
case PIPE_FORMAT_R16G16B16X16_FLOAT:
return modifier |
R300_C0_SEL_R | R300_C1_SEL_G |
R300_C2_SEL_B | R300_C3_SEL_A;
/* LA outputs. */
case PIPE_FORMAT_L16A16_UNORM:
case PIPE_FORMAT_L16A16_SNORM:
case PIPE_FORMAT_L16A16_FLOAT:
case PIPE_FORMAT_R16A16_UNORM:
case PIPE_FORMAT_R16A16_SNORM:
case PIPE_FORMAT_R16A16_FLOAT:
case PIPE_FORMAT_L32A32_FLOAT:
case PIPE_FORMAT_R32A32_FLOAT:
return modifier |
R300_C0_SEL_R | R300_C1_SEL_A;
default:
return ~0; /* Unsupported. */
}
}
/* Shader output formats. This is essentially the swizzle from the shader
* to the RB3D block.
*
* Note that formats are stored from C3 to C0. */
static uint32_t r300_translate_out_fmt(enum pipe_format format)
{
uint32_t modifier = 0;
unsigned i;
const struct util_format_description *desc;
static const uint32_t sign_bit[4] = {
R300_OUT_SIGN(0x1),
R300_OUT_SIGN(0x2),
R300_OUT_SIGN(0x4),
R300_OUT_SIGN(0x8),
};
desc = util_format_description(format);
/* Specifies how the shader output is written to the fog unit. */
if (desc->channel[0].type == UTIL_FORMAT_TYPE_FLOAT) {
if (desc->channel[0].size == 32) {
modifier |= R300_US_OUT_FMT_C4_32_FP;
} else {
modifier |= R300_US_OUT_FMT_C4_16_FP;
}
} else {
if (desc->channel[0].size == 16) {
modifier |= R300_US_OUT_FMT_C4_16;
} else {
/* C4_8 seems to be used for the formats whose pixel size
* is <= 32 bits. */
modifier |= R300_US_OUT_FMT_C4_8;
}
}
/* Add sign. */
for (i = 0; i < 4; i++)
if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
modifier |= sign_bit[i];
}
/* Add swizzles and return. */
switch (format) {
/* 8-bit outputs.
* COLORFORMAT_I8 stores the C2 component. */
case PIPE_FORMAT_A8_UNORM:
return modifier | R300_C2_SEL_A;
case PIPE_FORMAT_I8_UNORM:
case PIPE_FORMAT_L8_UNORM:
case PIPE_FORMAT_R8_UNORM:
case PIPE_FORMAT_R8_SNORM:
return modifier | R300_C2_SEL_R;
/* BGRA outputs. */
case PIPE_FORMAT_B5G6R5_UNORM:
case PIPE_FORMAT_B5G5R5A1_UNORM:
case PIPE_FORMAT_B5G5R5X1_UNORM:
case PIPE_FORMAT_B4G4R4A4_UNORM:
case PIPE_FORMAT_B4G4R4X4_UNORM:
case PIPE_FORMAT_B8G8R8A8_UNORM:
case PIPE_FORMAT_B8G8R8X8_UNORM:
case PIPE_FORMAT_B10G10R10A2_UNORM:
return modifier |
R300_C0_SEL_B | R300_C1_SEL_G |
R300_C2_SEL_R | R300_C3_SEL_A;
/* ARGB outputs. */
case PIPE_FORMAT_A8R8G8B8_UNORM:
case PIPE_FORMAT_X8R8G8B8_UNORM:
return modifier |
R300_C0_SEL_A | R300_C1_SEL_R |
R300_C2_SEL_G | R300_C3_SEL_B;
/* ABGR outputs. */
case PIPE_FORMAT_A8B8G8R8_UNORM:
case PIPE_FORMAT_X8B8G8R8_UNORM:
return modifier |
R300_C0_SEL_A | R300_C1_SEL_B |
R300_C2_SEL_G | R300_C3_SEL_R;
/* RGBA outputs. */
case PIPE_FORMAT_R8G8B8X8_UNORM:
case PIPE_FORMAT_R8G8B8A8_SNORM:
case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
case PIPE_FORMAT_R10G10B10A2_UNORM:
case PIPE_FORMAT_R10G10B10X2_SNORM:
case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
case PIPE_FORMAT_R16G16B16A16_UNORM:
case PIPE_FORMAT_R16G16B16A16_SNORM:
case PIPE_FORMAT_R16G16B16A16_FLOAT:
case PIPE_FORMAT_R32G32B32A32_FLOAT:
return modifier |
R300_C0_SEL_R | R300_C1_SEL_G |
R300_C2_SEL_B | R300_C3_SEL_A;
default:
return ~0; /* Unsupported. */
}
}
/* Shader output formats. This is essentially the swizzle from the shader
* to the RB3D block.
*
* Note that formats are stored from C3 to C0. */
static uint32_t r300_translate_out_fmt(enum pipe_format format)
{
uint32_t modifier = 0;
unsigned i;
const struct util_format_description *desc;
static const uint32_t sign_bit[4] = {
R300_OUT_SIGN(0x1),
R300_OUT_SIGN(0x2),
R300_OUT_SIGN(0x4),
R300_OUT_SIGN(0x8),
};
desc = util_format_description(format);
/* Specifies how the shader output is written to the fog unit. */
if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
/* The gamma correction causes precision loss so we need
* higher precision to maintain reasonable quality.
* It has nothing to do with the colorbuffer format. */
modifier |= R300_US_OUT_FMT_C4_10_GAMMA;
} else if (desc->channel[0].type == UTIL_FORMAT_TYPE_FLOAT) {
if (desc->channel[0].size == 32) {
modifier |= R300_US_OUT_FMT_C4_32_FP;
} else {
modifier |= R300_US_OUT_FMT_C4_16_FP;
}
} else {
if (desc->channel[0].size == 16) {
modifier |= R300_US_OUT_FMT_C4_16;
} else {
/* C4_8 seems to be used for the formats whose pixel size
* is <= 32 bits. */
modifier |= R300_US_OUT_FMT_C4_8;
}
}
/* Add sign. */
for (i = 0; i < 4; i++)
if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
modifier |= sign_bit[i];
}
/* Add swizzles and return. */
switch (format) {
/* 8-bit outputs.
* COLORFORMAT_I8 stores the C2 component. */
case PIPE_FORMAT_A8_UNORM:
return modifier | R300_C2_SEL_A;
case PIPE_FORMAT_I8_UNORM:
case PIPE_FORMAT_L8_UNORM:
case PIPE_FORMAT_L8_SRGB:
case PIPE_FORMAT_R8_UNORM:
case PIPE_FORMAT_R8_SNORM:
return modifier | R300_C2_SEL_R;
/* ARGB 32-bit outputs. */
case PIPE_FORMAT_B5G6R5_UNORM:
case PIPE_FORMAT_B5G5R5A1_UNORM:
case PIPE_FORMAT_B4G4R4A4_UNORM:
case PIPE_FORMAT_B8G8R8A8_UNORM:
case PIPE_FORMAT_B8G8R8A8_SRGB:
case PIPE_FORMAT_B8G8R8X8_UNORM:
case PIPE_FORMAT_B8G8R8X8_SRGB:
return modifier |
R300_C0_SEL_B | R300_C1_SEL_G |
R300_C2_SEL_R | R300_C3_SEL_A;
/* BGRA 32-bit outputs. */
case PIPE_FORMAT_A8R8G8B8_UNORM:
case PIPE_FORMAT_A8R8G8B8_SRGB:
case PIPE_FORMAT_X8R8G8B8_UNORM:
case PIPE_FORMAT_X8R8G8B8_SRGB:
return modifier |
R300_C0_SEL_A | R300_C1_SEL_R |
R300_C2_SEL_G | R300_C3_SEL_B;
/* RGBA 32-bit outputs. */
case PIPE_FORMAT_A8B8G8R8_UNORM:
case PIPE_FORMAT_R8G8B8A8_SNORM:
case PIPE_FORMAT_A8B8G8R8_SRGB:
case PIPE_FORMAT_X8B8G8R8_UNORM:
case PIPE_FORMAT_X8B8G8R8_SRGB:
return modifier |
R300_C0_SEL_A | R300_C1_SEL_B |
R300_C2_SEL_G | R300_C3_SEL_R;
/* ABGR 32-bit outputs. */
case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
case PIPE_FORMAT_R10G10B10A2_UNORM:
/* RGBA high precision outputs (same swizzles as ABGR low precision) */
case PIPE_FORMAT_R16G16B16A16_UNORM:
case PIPE_FORMAT_R16G16B16A16_SNORM:
//case PIPE_FORMAT_R16G16B16A16_FLOAT: /* not in pipe_format */
case PIPE_FORMAT_R32G32B32A32_FLOAT:
return modifier |
R300_C0_SEL_R | R300_C1_SEL_G |
R300_C2_SEL_B | R300_C3_SEL_A;
default:
return ~0; /* Unsupported. */
}
}