diff options
Diffstat (limited to 'src/mesa/main')
-rw-r--r-- | src/mesa/main/texformat_tmp.h | 34 | ||||
-rw-r--r-- | src/mesa/main/texstore.c | 63 |
2 files changed, 66 insertions, 31 deletions
diff --git a/src/mesa/main/texformat_tmp.h b/src/mesa/main/texformat_tmp.h index 08b6d8f12f..275340cabd 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 2b06796aba..6360ca15f8 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 { |