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-rw-r--r--src/mesa/main/texformat_tmp.h34
-rw-r--r--src/mesa/main/texstore.c63
2 files changed, 66 insertions, 31 deletions
diff --git a/src/mesa/main/texformat_tmp.h b/src/mesa/main/texformat_tmp.h
index 08b6d8f12fb..275340cabd3 100644
--- a/src/mesa/main/texformat_tmp.h
+++ b/src/mesa/main/texformat_tmp.h
@@ -1223,11 +1223,11 @@ static void store_texel_srgb8(struct gl_texture_image *texImage,
static void FETCH(srgba8)(const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLfloat *texel )
{
- const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);
- texel[RCOMP] = nonlinear_to_linear(src[0]);
- texel[GCOMP] = nonlinear_to_linear(src[1]);
- texel[BCOMP] = nonlinear_to_linear(src[2]);
- texel[ACOMP] = UBYTE_TO_FLOAT(src[3]); /* linear! */
+ const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+ texel[RCOMP] = nonlinear_to_linear( (s >> 24) );
+ texel[GCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );
+ texel[BCOMP] = nonlinear_to_linear( (s >> 8) & 0xff );
+ texel[ACOMP] = UBYTE_TO_FLOAT( (s ) & 0xff ); /* linear! */
}
#if DIM == 3
@@ -1235,11 +1235,8 @@ static void store_texel_srgba8(struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, const void *texel)
{
const GLubyte *rgba = (const GLubyte *) texel;
- GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);
- dst[0] = rgba[RCOMP];
- dst[1] = rgba[GCOMP];
- dst[2] = rgba[BCOMP];
- dst[3] = rgba[ACOMP];
+ GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+ *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
}
#endif
@@ -1247,11 +1244,11 @@ static void store_texel_srgba8(struct gl_texture_image *texImage,
static void FETCH(sargb8)(const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLfloat *texel )
{
- const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);
- texel[RCOMP] = nonlinear_to_linear(src[1]);
- texel[GCOMP] = nonlinear_to_linear(src[2]);
- texel[BCOMP] = nonlinear_to_linear(src[3]);
- texel[ACOMP] = UBYTE_TO_FLOAT(src[0]); /* linear! */
+ const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+ texel[RCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );
+ texel[GCOMP] = nonlinear_to_linear( (s >> 8) & 0xff );
+ texel[BCOMP] = nonlinear_to_linear( (s ) & 0xff );
+ texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24) ); /* linear! */
}
#if DIM == 3
@@ -1259,11 +1256,8 @@ static void store_texel_sargb8(struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, const void *texel)
{
const GLubyte *rgba = (const GLubyte *) texel;
- GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);
- dst[0] = rgba[ACOMP];
- dst[1] = rgba[RCOMP];
- dst[2] = rgba[GCOMP];
- dst[3] = rgba[BCOMP];
+ GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+ *dst = PACK_COLOR_8888(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
}
#endif
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index 2b06796abab..6360ca15f81 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -3699,14 +3699,37 @@ is_srgb_teximage(const struct gl_texture_image *texImage)
case MESA_FORMAT_SARGB8:
case MESA_FORMAT_SL8:
case MESA_FORMAT_SLA8:
+ case MESA_FORMAT_SRGB_DXT1:
+ case MESA_FORMAT_SRGBA_DXT1:
+ case MESA_FORMAT_SRGBA_DXT3:
+ case MESA_FORMAT_SRGBA_DXT5:
return GL_TRUE;
default:
return GL_FALSE;
}
}
-#endif /* FEATURE_EXT_texture_sRGB */
+/**
+ * Convert a float value from linear space to a
+ * non-linear sRGB value in [0, 255].
+ * Not terribly efficient.
+ */
+static INLINE GLfloat
+linear_to_nonlinear(GLfloat cl)
+{
+ /* can't have values outside [0, 1] */
+ GLfloat cs;
+ if (cl < 0.0031308) {
+ cs = 12.92 * cl;
+ }
+ else {
+ cs = 1.055 * _mesa_pow(cl, 0.41666) - 0.055;
+ }
+ return cs;
+}
+
+#endif /* FEATURE_EXT_texture_sRGB */
/**
* This is the software fallback for Driver.GetTexImage().
@@ -3823,16 +3846,34 @@ _mesa_get_teximage(GLcontext *ctx, GLenum target, GLint level,
}
#if FEATURE_EXT_texture_sRGB
else if (is_srgb_teximage(texImage)) {
- /* no pixel transfer and no non-linear to linear conversion */
- const GLint comps = texImage->TexFormat->TexelBytes;
- const GLint rowstride = comps * texImage->RowStride;
- MEMCPY(dest,
- (const GLubyte *) texImage->Data + row * rowstride,
- comps * width * sizeof(GLubyte));
- /* FIXME: isn't it necessary to still do component assigning
- according to format/type? */
- /* FIXME: need to do something else for compressed srgb textures
- (currently will return values converted to linear) */
+ /* special case this since need to backconvert values */
+ /* convert row to RGBA format */
+ GLfloat rgba[MAX_WIDTH][4];
+ GLint col;
+ GLbitfield transferOps = 0x0;
+
+ for (col = 0; col < width; col++) {
+ (*texImage->FetchTexelf)(texImage, col, row, img, rgba[col]);
+ if (texImage->TexFormat->BaseFormat == GL_LUMINANCE) {
+ rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);
+ rgba[col][GCOMP] = 0.0;
+ rgba[col][BCOMP] = 0.0;
+ }
+ else if (texImage->TexFormat->BaseFormat == GL_LUMINANCE_ALPHA) {
+ rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);
+ rgba[col][GCOMP] = 0.0;
+ rgba[col][BCOMP] = 0.0;
+ }
+ else if (texImage->TexFormat->BaseFormat == GL_RGB ||
+ texImage->TexFormat->BaseFormat == GL_RGBA) {
+ rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);
+ rgba[col][GCOMP] = linear_to_nonlinear(rgba[col][GCOMP]);
+ rgba[col][BCOMP] = linear_to_nonlinear(rgba[col][BCOMP]);
+ }
+ }
+ _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
+ format, type, dest,
+ &ctx->Pack, transferOps /*image xfer ops*/);
}
#endif /* FEATURE_EXT_texture_sRGB */
else {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 05:03:28 +0000