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-rw-r--r--src/mesa/main/texcompress_etc.c274
-rw-r--r--src/mesa/main/texcompress_etc.h6
2 files changed, 280 insertions, 0 deletions
diff --git a/src/mesa/main/texcompress_etc.c b/src/mesa/main/texcompress_etc.c
index 73d2fa4fe0c..c8bf6eab44f 100644
--- a/src/mesa/main/texcompress_etc.c
+++ b/src/mesa/main/texcompress_etc.c
@@ -1461,3 +1461,277 @@ _mesa_unpack_etc2_format(uint8_t *dst_row,
src_row, src_stride,
src_width, src_height);
}
+
+
+
+static void
+fetch_etc1_rgb8(const GLubyte *map, const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc1_block block;
+ GLubyte dst[3];
+ const GLubyte *src;
+
+ src = map + (((rowStride + 3) / 4) * (j / 4) + (i / 4)) * 8;
+
+ etc1_parse_block(&block, src);
+ etc1_fetch_texel(&block, i % 4, j % 4, dst);
+
+ texel[RCOMP] = UBYTE_TO_FLOAT(dst[0]);
+ texel[GCOMP] = UBYTE_TO_FLOAT(dst[1]);
+ texel[BCOMP] = UBYTE_TO_FLOAT(dst[2]);
+ texel[ACOMP] = 1.0f;
+}
+
+
+static void
+fetch_etc2_rgb8(const GLubyte *map, const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ uint8_t dst[3];
+ const uint8_t *src;
+
+ src = map + (((rowStride + 3) / 4) * (j / 4) + (i / 4)) * 8;
+
+ etc2_rgb8_parse_block(&block, src,
+ false /* punchthrough_alpha */);
+ etc2_rgb8_fetch_texel(&block, i % 4, j % 4, dst,
+ false /* punchthrough_alpha */);
+
+ texel[RCOMP] = UBYTE_TO_FLOAT(dst[0]);
+ texel[GCOMP] = UBYTE_TO_FLOAT(dst[1]);
+ texel[BCOMP] = UBYTE_TO_FLOAT(dst[2]);
+ texel[ACOMP] = 1.0f;
+}
+
+static void
+fetch_etc2_srgb8(const GLubyte *map, const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ uint8_t dst[3];
+ const uint8_t *src;
+
+ src = map + (((rowStride + 3) / 4) * (j / 4) + (i / 4)) * 8;
+
+ etc2_rgb8_parse_block(&block, src,
+ false /* punchthrough_alpha */);
+ etc2_rgb8_fetch_texel(&block, i % 4, j % 4, dst,
+ false /* 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] = 1.0f;
+}
+
+static void
+fetch_etc2_rgba8_eac(const GLubyte *map, const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ uint8_t dst[4];
+ const uint8_t *src;
+
+ src = map + (((rowStride + 3) / 4) * (j / 4) + (i / 4)) * 16;
+
+ etc2_rgba8_parse_block(&block, src);
+ etc2_rgba8_fetch_texel(&block, i % 4, j % 4, dst);
+
+ texel[RCOMP] = UBYTE_TO_FLOAT(dst[0]);
+ texel[GCOMP] = UBYTE_TO_FLOAT(dst[1]);
+ texel[BCOMP] = UBYTE_TO_FLOAT(dst[2]);
+ texel[ACOMP] = UBYTE_TO_FLOAT(dst[3]);
+}
+
+static void
+fetch_etc2_srgb8_alpha8_eac(const GLubyte *map, const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ uint8_t dst[4];
+ const uint8_t *src;
+
+ src = map + (((rowStride + 3) / 4) * (j / 4) + (i / 4)) * 16;
+
+ etc2_rgba8_parse_block(&block, src);
+ etc2_rgba8_fetch_texel(&block, i % 4, j % 4, dst);
+
+ 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]);
+}
+
+static void
+fetch_etc2_r11_eac(const GLubyte *map, const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ GLushort dst;
+ const uint8_t *src;
+
+ src = map + (((rowStride + 3) / 4) * (j / 4) + (i / 4)) * 8;
+
+ etc2_r11_parse_block(&block, src);
+ etc2_r11_fetch_texel(&block, i % 4, j % 4, (uint8_t *)&dst);
+
+ texel[RCOMP] = USHORT_TO_FLOAT(dst);
+ texel[GCOMP] = 0.0f;
+ texel[BCOMP] = 0.0f;
+ texel[ACOMP] = 1.0f;
+}
+
+static void
+fetch_etc2_rg11_eac(const GLubyte *map, const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ GLushort dst[2];
+ const uint8_t *src;
+
+ src = map + (((rowStride + 3) / 4) * (j / 4) + (i / 4)) * 16;
+
+ /* red component */
+ etc2_r11_parse_block(&block, src);
+ etc2_r11_fetch_texel(&block, i % 4, j % 4, (uint8_t *)dst);
+
+ /* green component */
+ etc2_r11_parse_block(&block, src + 8);
+ etc2_r11_fetch_texel(&block, i % 4, j % 4, (uint8_t *)(dst + 1));
+
+ texel[RCOMP] = USHORT_TO_FLOAT(dst[0]);
+ texel[GCOMP] = USHORT_TO_FLOAT(dst[1]);
+ texel[BCOMP] = 0.0f;
+ texel[ACOMP] = 1.0f;
+}
+
+static void
+fetch_etc2_signed_r11_eac(const GLubyte *map, const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ GLushort dst;
+ const uint8_t *src;
+
+ src = map + (((rowStride + 3) / 4) * (j / 4) + (i / 4)) * 8;
+
+ etc2_r11_parse_block(&block, src);
+ etc2_signed_r11_fetch_texel(&block, i % 4, j % 4, (uint8_t *)&dst);
+
+ texel[RCOMP] = SHORT_TO_FLOAT(dst);
+ texel[GCOMP] = 0.0f;
+ texel[BCOMP] = 0.0f;
+ texel[ACOMP] = 1.0f;
+}
+
+static void
+fetch_etc2_signed_rg11_eac(const GLubyte *map, const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ GLushort dst[2];
+ const uint8_t *src;
+
+ src = map + (((rowStride + 3) / 4) * (j / 4) + (i / 4)) * 16;
+
+ /* red component */
+ etc2_r11_parse_block(&block, src);
+ etc2_signed_r11_fetch_texel(&block, i % 4, j % 4, (uint8_t *)dst);
+
+ /* green component */
+ etc2_r11_parse_block(&block, src + 8);
+ etc2_signed_r11_fetch_texel(&block, i % 4, j % 4, (uint8_t *)(dst + 1));
+
+ texel[RCOMP] = SHORT_TO_FLOAT(dst[0]);
+ texel[GCOMP] = SHORT_TO_FLOAT(dst[1]);
+ texel[BCOMP] = 0.0f;
+ texel[ACOMP] = 1.0f;
+}
+
+static void
+fetch_etc2_rgb8_punchthrough_alpha1(const GLubyte *map,
+ const GLuint imageOffsets[],
+ GLint rowStride, GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ uint8_t dst[4];
+ const uint8_t *src;
+
+ src = map + (((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] = UBYTE_TO_FLOAT(dst[0]);
+ texel[GCOMP] = UBYTE_TO_FLOAT(dst[1]);
+ texel[BCOMP] = UBYTE_TO_FLOAT(dst[2]);
+ texel[ACOMP] = UBYTE_TO_FLOAT(dst[3]);
+}
+
+static void
+fetch_etc2_srgb8_punchthrough_alpha1(const GLubyte *map,
+ const GLuint imageOffsets[],
+ GLint rowStride,
+ GLint i, GLint j, GLint k,
+ GLfloat *texel)
+{
+ struct etc2_block block;
+ uint8_t dst[4];
+ const uint8_t *src;
+
+ src = map + (((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]);
+}
+
+
+compressed_fetch_func
+_mesa_get_etc_fetch_func(gl_format format)
+{
+ switch (format) {
+ case MESA_FORMAT_ETC1_RGB8:
+ return fetch_etc1_rgb8;
+ case MESA_FORMAT_ETC2_RGB8:
+ return fetch_etc2_rgb8;
+ case MESA_FORMAT_ETC2_SRGB8:
+ return fetch_etc2_srgb8;
+ case MESA_FORMAT_ETC2_RGBA8_EAC:
+ return fetch_etc2_rgba8_eac;
+ case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
+ return fetch_etc2_srgb8_alpha8_eac;
+ case MESA_FORMAT_ETC2_R11_EAC:
+ return fetch_etc2_r11_eac;
+ case MESA_FORMAT_ETC2_RG11_EAC:
+ return fetch_etc2_rg11_eac;
+ case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
+ return fetch_etc2_signed_r11_eac;
+ case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
+ return fetch_etc2_signed_rg11_eac;
+ case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
+ return fetch_etc2_rgb8_punchthrough_alpha1;
+ case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
+ return fetch_etc2_srgb8_punchthrough_alpha1;
+ default:
+ return NULL;
+ }
+}
diff --git a/src/mesa/main/texcompress_etc.h b/src/mesa/main/texcompress_etc.h
index 5e086d4e79c..09d62de81bc 100644
--- a/src/mesa/main/texcompress_etc.h
+++ b/src/mesa/main/texcompress_etc.h
@@ -27,8 +27,10 @@
#include <inttypes.h>
#include "glheader.h"
#include "mfeatures.h"
+#include "texcompress.h"
#include "texstore.h"
+
struct swrast_texture_image;
GLboolean
@@ -123,4 +125,8 @@ _mesa_unpack_etc2_format(uint8_t *dst_row,
unsigned src_width,
unsigned src_height,
gl_format format);
+
+compressed_fetch_func
+_mesa_get_etc_fetch_func(gl_format format);
+
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 16:01:23 +0000