diff options
Diffstat (limited to 'src/mesa/main/texcompress_etc.c')
| -rw-r--r-- | src/mesa/main/texcompress_etc.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/mesa/main/texcompress_etc.c b/src/mesa/main/texcompress_etc.c index 7c8287bfba7..b98ff029a2e 100644 --- a/src/mesa/main/texcompress_etc.c +++ b/src/mesa/main/texcompress_etc.c @@ -34,6 +34,7 @@ * GL_COMPRESSED_SIGNED_R11_EAC * GL_COMPRESSED_SIGNED_RG11_EAC * MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1 + * MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1 */ #include <stdbool.h> @@ -1041,6 +1042,47 @@ etc2_unpack_rgb8_punchthrough_alpha1(uint8_t *dst_row, } } +static void +etc2_unpack_srgb8_punchthrough_alpha1(uint8_t *dst_row, + unsigned dst_stride, + const uint8_t *src_row, + unsigned src_stride, + unsigned width, + unsigned height) +{ + const unsigned bw = 4, bh = 4, bs = 8, comps = 4; + struct etc2_block block; + unsigned x, y, i, j; + uint8_t tmp; + + for (y = 0; y < height; y += bh) { + const uint8_t *src = src_row; + + for (x = 0; x < width; x+= bw) { + etc2_rgb8_parse_block(&block, src, + true /* punchthrough_alpha */); + for (j = 0; j < bh; j++) { + uint8_t *dst = dst_row + (y + j) * dst_stride + x * comps; + for (i = 0; i < bw; i++) { + etc2_rgb8_fetch_texel(&block, i, j, dst, + true /* punchthrough_alpha */); + /* Convert to MESA_FORMAT_SARGB8 */ + tmp = dst[0]; + dst[0] = dst[2]; + dst[2] = tmp; + dst[3] = dst[3]; + + dst += comps; + } + } + + src += bs; + } + + src_row += src_stride; + } +} + /* ETC2 texture formats are valid in glCompressedTexImage2D and * glCompressedTexSubImage2D functions */ GLboolean @@ -1115,6 +1157,14 @@ _mesa_texstore_etc2_rgb8_punchthrough_alpha1(TEXSTORE_PARAMS) return GL_FALSE; } +GLboolean +_mesa_texstore_etc2_srgb8_punchthrough_alpha1(TEXSTORE_PARAMS) +{ + ASSERT(0); + + return GL_FALSE; +} + void _mesa_fetch_texel_2d_f_etc2_rgb8(const struct swrast_texture_image *texImage, GLint i, GLint j, GLint k, GLfloat *texel) @@ -1316,6 +1366,29 @@ _mesa_fetch_texel_2d_f_etc2_rgb8_punchthrough_alpha1( texel[ACOMP] = UBYTE_TO_FLOAT(dst[3]); } +void +_mesa_fetch_texel_2d_f_etc2_srgb8_punchthrough_alpha1( + const struct swrast_texture_image *texImage, + GLint i, GLint j, + GLint k, GLfloat *texel) +{ + struct etc2_block block; + uint8_t dst[4]; + const uint8_t *src; + + src = texImage->Map + + (((texImage->RowStride + 3) / 4) * (j / 4) + (i / 4)) * 8; + + etc2_rgb8_parse_block(&block, src, + true /* punchthrough alpha */); + etc2_rgb8_fetch_texel(&block, i % 4, j % 4, dst, + true /* punchthrough alpha */); + texel[RCOMP] = _mesa_nonlinear_to_linear(dst[0]); + texel[GCOMP] = _mesa_nonlinear_to_linear(dst[1]); + texel[BCOMP] = _mesa_nonlinear_to_linear(dst[2]); + texel[ACOMP] = UBYTE_TO_FLOAT(dst[3]); +} + /** * Decode texture data in any one of following formats: * `MESA_FORMAT_ETC2_RGB8` @@ -1327,6 +1400,7 @@ _mesa_fetch_texel_2d_f_etc2_rgb8_punchthrough_alpha1( * `MESA_FORMAT_ETC2_SIGNED_R11_EAC` * `MESA_FORMAT_ETC2_SIGNED_RG11_EAC` * `MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1` + * `MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1` * * The size of the source data must be a multiple of the ETC2 block size * even if the texture image's dimensions are not aligned to 4. @@ -1381,4 +1455,8 @@ _mesa_unpack_etc2_format(uint8_t *dst_row, etc2_unpack_rgb8_punchthrough_alpha1(dst_row, dst_stride, src_row, src_stride, src_width, src_height); + else if (format == MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1) + etc2_unpack_srgb8_punchthrough_alpha1(dst_row, dst_stride, + src_row, src_stride, + src_width, src_height); } |