diff options
Diffstat (limited to 'src/mesa')
-rw-r--r-- | src/mesa/main/pack.c | 641 |
1 files changed, 244 insertions, 397 deletions
diff --git a/src/mesa/main/pack.c b/src/mesa/main/pack.c index 542fcc4f539..31a306058d3 100644 --- a/src/mesa/main/pack.c +++ b/src/mesa/main/pack.c @@ -335,6 +335,104 @@ _mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source, } +/** + * Get indexes of color components for a basic color format, such as + * GL_RGBA, GL_RED, GL_LUMINANCE_ALPHA, etc. Return -1 for indexes + * that do not apply. + */ +static void +get_component_indexes(GLenum format, + GLint *redIndex, + GLint *greenIndex, + GLint *blueIndex, + GLint *alphaIndex, + GLint *luminanceIndex, + GLint *intensityIndex) +{ + *redIndex = -1; + *greenIndex = -1; + *blueIndex = -1; + *alphaIndex = -1; + *luminanceIndex = -1; + *intensityIndex = -1; + + switch (format) { + case GL_LUMINANCE: + case GL_LUMINANCE_INTEGER_EXT: + *luminanceIndex = 0; + break; + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + *luminanceIndex = 0; + *alphaIndex = 1; + break; + case GL_INTENSITY: + *intensityIndex = 0; + break; + case GL_RED: + case GL_RED_INTEGER_EXT: + *redIndex = 0; + break; + case GL_GREEN: + case GL_GREEN_INTEGER_EXT: + *greenIndex = 0; + break; + case GL_BLUE: + case GL_BLUE_INTEGER_EXT: + *blueIndex = 0; + break; + case GL_ALPHA: + case GL_ALPHA_INTEGER_EXT: + *alphaIndex = 0; + break; + case GL_RG: + case GL_RG_INTEGER: + *redIndex = 0; + *greenIndex = 1; + break; + case GL_RGB: + case GL_RGB_INTEGER_EXT: + *redIndex = 0; + *greenIndex = 1; + *blueIndex = 2; + break; + case GL_BGR: + case GL_BGR_INTEGER_EXT: + *blueIndex = 0; + *greenIndex = 1; + *redIndex = 2; + break; + case GL_RGBA: + case GL_RGBA_INTEGER_EXT: + *redIndex = 0; + *greenIndex = 1; + *blueIndex = 2; + *alphaIndex = 3; + break; + case GL_BGRA: + case GL_BGRA_INTEGER: + *redIndex = 2; + *greenIndex = 1; + *blueIndex = 0; + *alphaIndex = 3; + break; + case GL_ABGR_EXT: + *redIndex = 3; + *greenIndex = 2; + *blueIndex = 1; + *alphaIndex = 0; + break; + case GL_DU8DV8_ATI: + case GL_DUDV_ATI: + *redIndex = 0; + *greenIndex = 1; + break; + default: + assert(0 && "bad format in get_component_indexes()"); + } +} + + /** * For small integer types, return the min and max possible values. @@ -2028,6 +2126,133 @@ extract_uint_indexes(GLuint n, GLuint indexes[], } +/** + * Return source/dest RGBA indexes for unpacking pixels. + */ +static void +get_component_mapping(GLenum format, + GLint *redIndex, + GLint *greenIndex, + GLint *blueIndex, + GLint *alphaIndex, + GLint *rComp, + GLint *gComp, + GLint *bComp, + GLint *aComp) +{ + switch (format) { + case GL_RED: + case GL_RED_INTEGER_EXT: + *redIndex = 0; + *greenIndex = *blueIndex = *alphaIndex = -1; + break; + case GL_GREEN: + case GL_GREEN_INTEGER_EXT: + *greenIndex = 0; + *redIndex = *blueIndex = *alphaIndex = -1; + break; + case GL_BLUE: + case GL_BLUE_INTEGER_EXT: + *blueIndex = 0; + *redIndex = *greenIndex = *alphaIndex = -1; + break; + case GL_ALPHA: + case GL_ALPHA_INTEGER_EXT: + *redIndex = *greenIndex = *blueIndex = -1; + *alphaIndex = 0; + break; + case GL_LUMINANCE: + case GL_LUMINANCE_INTEGER_EXT: + *redIndex = *greenIndex = *blueIndex = 0; + *alphaIndex = -1; + break; + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + *redIndex = *greenIndex = *blueIndex = 0; + *alphaIndex = 1; + break; + case GL_INTENSITY: + *redIndex = *greenIndex = *blueIndex = *alphaIndex = 0; + break; + case GL_RG: + case GL_RG_INTEGER: + *redIndex = 0; + *greenIndex = 1; + *blueIndex = -1; + *alphaIndex = -1; + *rComp = 0; + *gComp = 1; + *bComp = 2; + *aComp = 3; + break; + case GL_RGB: + case GL_RGB_INTEGER: + *redIndex = 0; + *greenIndex = 1; + *blueIndex = 2; + *alphaIndex = -1; + *rComp = 0; + *gComp = 1; + *bComp = 2; + *aComp = 3; + break; + case GL_BGR: + *redIndex = 2; + *greenIndex = 1; + *blueIndex = 0; + *alphaIndex = -1; + *rComp = 2; + *gComp = 1; + *bComp = 0; + *aComp = 3; + break; + case GL_RGBA: + case GL_RGBA_INTEGER: + *redIndex = 0; + *greenIndex = 1; + *blueIndex = 2; + *alphaIndex = 3; + *rComp = 0; + *gComp = 1; + *bComp = 2; + *aComp = 3; + break; + case GL_BGRA: + *redIndex = 2; + *greenIndex = 1; + *blueIndex = 0; + *alphaIndex = 3; + *rComp = 2; + *gComp = 1; + *bComp = 0; + *aComp = 3; + break; + case GL_ABGR_EXT: + *redIndex = 3; + *greenIndex = 2; + *blueIndex = 1; + *alphaIndex = 0; + *rComp = 3; + *gComp = 2; + *bComp = 1; + *aComp = 0; + break; + case GL_DU8DV8_ATI: + case GL_DUDV_ATI: + *redIndex = 0; + *greenIndex = 1; + *blueIndex = -1; + *alphaIndex = -1; + break; + default: + _mesa_problem(NULL, "bad srcFormat %s in get_component_mapping", + _mesa_lookup_enum_by_nr(format)); + return; + } +} + + + /* * This function extracts floating point RGBA values from arbitrary * image data. srcFormat and srcType are the format and type parameters @@ -2102,131 +2327,11 @@ extract_float_rgba(GLuint n, GLfloat rgba[][4], srcType == GL_UNSIGNED_INT_10_10_10_2 || srcType == GL_UNSIGNED_INT_2_10_10_10_REV); - rComp = gComp = bComp = aComp = -1; + get_component_mapping(srcFormat, + &redIndex, &greenIndex, &blueIndex, &alphaIndex, + &rComp, &gComp, &bComp, &aComp); - switch (srcFormat) { - case GL_RED: - case GL_RED_INTEGER_EXT: - redIndex = 0; - greenIndex = blueIndex = alphaIndex = -1; - stride = 1; - break; - case GL_GREEN: - case GL_GREEN_INTEGER_EXT: - greenIndex = 0; - redIndex = blueIndex = alphaIndex = -1; - stride = 1; - break; - case GL_BLUE: - case GL_BLUE_INTEGER_EXT: - blueIndex = 0; - redIndex = greenIndex = alphaIndex = -1; - stride = 1; - break; - case GL_ALPHA: - case GL_ALPHA_INTEGER_EXT: - redIndex = greenIndex = blueIndex = -1; - alphaIndex = 0; - stride = 1; - break; - case GL_LUMINANCE: - case GL_LUMINANCE_INTEGER_EXT: - redIndex = greenIndex = blueIndex = 0; - alphaIndex = -1; - stride = 1; - break; - case GL_LUMINANCE_ALPHA: - case GL_LUMINANCE_ALPHA_INTEGER_EXT: - redIndex = greenIndex = blueIndex = 0; - alphaIndex = 1; - stride = 2; - break; - case GL_INTENSITY: - redIndex = greenIndex = blueIndex = alphaIndex = 0; - stride = 1; - break; - case GL_RG: - case GL_RG_INTEGER: - redIndex = 0; - greenIndex = 1; - blueIndex = -1; - alphaIndex = -1; - rComp = 0; - gComp = 1; - bComp = 2; - aComp = 3; - stride = 2; - break; - case GL_RGB: - case GL_RGB_INTEGER: - redIndex = 0; - greenIndex = 1; - blueIndex = 2; - alphaIndex = -1; - rComp = 0; - gComp = 1; - bComp = 2; - aComp = 3; - stride = 3; - break; - case GL_BGR: - redIndex = 2; - greenIndex = 1; - blueIndex = 0; - alphaIndex = -1; - rComp = 2; - gComp = 1; - bComp = 0; - aComp = 3; - stride = 3; - break; - case GL_RGBA: - case GL_RGBA_INTEGER: - redIndex = 0; - greenIndex = 1; - blueIndex = 2; - alphaIndex = 3; - rComp = 0; - gComp = 1; - bComp = 2; - aComp = 3; - stride = 4; - break; - case GL_BGRA: - redIndex = 2; - greenIndex = 1; - blueIndex = 0; - alphaIndex = 3; - rComp = 2; - gComp = 1; - bComp = 0; - aComp = 3; - stride = 4; - break; - case GL_ABGR_EXT: - redIndex = 3; - greenIndex = 2; - blueIndex = 1; - alphaIndex = 0; - rComp = 3; - gComp = 2; - bComp = 1; - aComp = 0; - stride = 4; - break; - case GL_DU8DV8_ATI: - case GL_DUDV_ATI: - redIndex = 0; - greenIndex = 1; - blueIndex = -1; - alphaIndex = -1; - stride = 2; - break; - default: - _mesa_problem(NULL, "bad srcFormat %s in extract float data", - _mesa_lookup_enum_by_nr(srcFormat)); - return; - } + stride = _mesa_components_in_format(srcFormat); intFormat = _mesa_is_integer_format(srcFormat); @@ -2794,123 +2899,11 @@ extract_uint_rgba(GLuint n, GLuint rgba[][4], srcType == GL_UNSIGNED_INT_10_10_10_2 || srcType == GL_UNSIGNED_INT_2_10_10_10_REV); - rComp = gComp = bComp = aComp = -1; + get_component_mapping(srcFormat, + &redIndex, &greenIndex, &blueIndex, &alphaIndex, + &rComp, &gComp, &bComp, &aComp); - switch (srcFormat) { - case GL_RED: - case GL_RED_INTEGER_EXT: - redIndex = 0; - greenIndex = blueIndex = alphaIndex = -1; - stride = 1; - break; - case GL_GREEN: - case GL_GREEN_INTEGER_EXT: - greenIndex = 0; - redIndex = blueIndex = alphaIndex = -1; - stride = 1; - break; - case GL_BLUE: - case GL_BLUE_INTEGER_EXT: - blueIndex = 0; - redIndex = greenIndex = alphaIndex = -1; - stride = 1; - break; - case GL_ALPHA: - case GL_ALPHA_INTEGER_EXT: - redIndex = greenIndex = blueIndex = -1; - alphaIndex = 0; - stride = 1; - break; - case GL_LUMINANCE: - case GL_LUMINANCE_INTEGER_EXT: - redIndex = greenIndex = blueIndex = 0; - alphaIndex = -1; - stride = 1; - break; - case GL_LUMINANCE_ALPHA: - case GL_LUMINANCE_ALPHA_INTEGER_EXT: - redIndex = greenIndex = blueIndex = 0; - alphaIndex = 1; - stride = 2; - break; - case GL_INTENSITY: - redIndex = greenIndex = blueIndex = alphaIndex = 0; - stride = 1; - break; - case GL_RG: - case GL_RG_INTEGER: - redIndex = 0; - greenIndex = 1; - blueIndex = -1; - alphaIndex = -1; - rComp = 0; - gComp = 1; - bComp = 2; - aComp = 3; - stride = 2; - break; - case GL_RGB: - case GL_RGB_INTEGER: - redIndex = 0; - greenIndex = 1; - blueIndex = 2; - alphaIndex = -1; - rComp = 0; - gComp = 1; - bComp = 2; - aComp = 3; - stride = 3; - break; - case GL_BGR: - redIndex = 2; - greenIndex = 1; - blueIndex = 0; - alphaIndex = -1; - rComp = 2; - gComp = 1; - bComp = 0; - aComp = 3; - stride = 3; - break; - case GL_RGBA: - case GL_RGBA_INTEGER: - redIndex = 0; - greenIndex = 1; - blueIndex = 2; - alphaIndex = 3; - rComp = 0; - gComp = 1; - bComp = 2; - aComp = 3; - stride = 4; - break; - case GL_BGRA: - redIndex = 2; - greenIndex = 1; - blueIndex = 0; - alphaIndex = 3; - rComp = 2; - gComp = 1; - bComp = 0; - aComp = 3; - stride = 4; - break; - case GL_ABGR_EXT: - redIndex = 3; - greenIndex = 2; - blueIndex = 1; - alphaIndex = 0; - rComp = 3; - gComp = 2; - bComp = 1; - aComp = 0; - stride = 4; - break; - default: - _mesa_problem(NULL, "bad srcFormat %s in extract float data", - _mesa_lookup_enum_by_nr(srcFormat)); - return; - } + stride = _mesa_components_in_format(srcFormat); intFormat = _mesa_is_integer_format(srcFormat); @@ -3522,63 +3515,11 @@ _mesa_unpack_color_span_chan( struct gl_context *ctx, _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba); } - /* Now determine which color channels we need to produce. - * And determine the dest index (offset) within each color tuple. - */ - switch (dstFormat) { - case GL_ALPHA: - dstAlphaIndex = 0; - dstRedIndex = dstGreenIndex = dstBlueIndex = -1; - dstLuminanceIndex = dstIntensityIndex = -1; - break; - case GL_LUMINANCE: - dstLuminanceIndex = 0; - dstRedIndex = dstGreenIndex = dstBlueIndex = dstAlphaIndex = -1; - dstIntensityIndex = -1; - break; - case GL_LUMINANCE_ALPHA: - dstLuminanceIndex = 0; - dstAlphaIndex = 1; - dstRedIndex = dstGreenIndex = dstBlueIndex = -1; - dstIntensityIndex = -1; - break; - case GL_INTENSITY: - dstIntensityIndex = 0; - dstRedIndex = dstGreenIndex = dstBlueIndex = dstAlphaIndex = -1; - dstLuminanceIndex = -1; - break; - case GL_RED: - dstRedIndex = 0; - dstGreenIndex = dstBlueIndex = -1; - dstAlphaIndex = dstLuminanceIndex = dstIntensityIndex = -1; - break; - case GL_RG: - dstRedIndex = 0; - dstGreenIndex = 1; - dstBlueIndex = -1; - dstAlphaIndex = dstLuminanceIndex = dstIntensityIndex = -1; - break; - case GL_RGB: - dstRedIndex = 0; - dstGreenIndex = 1; - dstBlueIndex = 2; - dstAlphaIndex = dstLuminanceIndex = dstIntensityIndex = -1; - break; - case GL_RGBA: - dstRedIndex = 0; - dstGreenIndex = 1; - dstBlueIndex = 2; - dstAlphaIndex = 3; - dstLuminanceIndex = dstIntensityIndex = -1; - break; - default: - _mesa_problem(ctx, "bad dstFormat in _mesa_unpack_chan_span()"); - return; - } - + get_component_indexes(dstFormat, &dstRedIndex, &dstGreenIndex, + &dstBlueIndex, &dstAlphaIndex, &dstLuminanceIndex, + &dstIntensityIndex); /* Now return the GLchan data in the requested dstFormat */ - if (dstRedIndex >= 0) { GLchan *dst = dest; GLuint i; @@ -3761,59 +3702,9 @@ _mesa_unpack_color_span_float( struct gl_context *ctx, _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba); } - /* Now determine which color channels we need to produce. - * And determine the dest index (offset) within each color tuple. - */ - switch (dstFormat) { - case GL_ALPHA: - dstAlphaIndex = 0; - dstRedIndex = dstGreenIndex = dstBlueIndex = -1; - dstLuminanceIndex = dstIntensityIndex = -1; - break; - case GL_LUMINANCE: - dstLuminanceIndex = 0; - dstRedIndex = dstGreenIndex = dstBlueIndex = dstAlphaIndex = -1; - dstIntensityIndex = -1; - break; - case GL_LUMINANCE_ALPHA: - dstLuminanceIndex = 0; - dstAlphaIndex = 1; - dstRedIndex = dstGreenIndex = dstBlueIndex = -1; - dstIntensityIndex = -1; - break; - case GL_INTENSITY: - dstIntensityIndex = 0; - dstRedIndex = dstGreenIndex = dstBlueIndex = dstAlphaIndex = -1; - dstLuminanceIndex = -1; - break; - case GL_RED: - dstRedIndex = 0; - dstGreenIndex = dstBlueIndex = -1; - dstAlphaIndex = dstLuminanceIndex = dstIntensityIndex = -1; - break; - case GL_RG: - dstRedIndex = 0; - dstGreenIndex = 1; - dstBlueIndex = -1; - dstAlphaIndex = dstLuminanceIndex = dstIntensityIndex = -1; - break; - case GL_RGB: - dstRedIndex = 0; - dstGreenIndex = 1; - dstBlueIndex = 2; - dstAlphaIndex = dstLuminanceIndex = dstIntensityIndex = -1; - break; - case GL_RGBA: - dstRedIndex = 0; - dstGreenIndex = 1; - dstBlueIndex = 2; - dstAlphaIndex = 3; - dstLuminanceIndex = dstIntensityIndex = -1; - break; - default: - _mesa_problem(ctx, "bad dstFormat in _mesa_unpack_color_span_float()"); - return; - } + get_component_indexes(dstFormat, &dstRedIndex, &dstGreenIndex, + &dstBlueIndex, &dstAlphaIndex, &dstLuminanceIndex, + &dstIntensityIndex); /* Now pack results in the requested dstFormat */ if (dstRedIndex >= 0) { @@ -3877,9 +3768,6 @@ _mesa_unpack_color_span_float( struct gl_context *ctx, } - - - /** * Same as _mesa_unpack_color_span_chan(), but return GLuint data * instead of GLchan. @@ -3961,56 +3849,15 @@ _mesa_unpack_color_span_uint(struct gl_context *ctx, } else { /* general case */ - GLint dstRedIndex = -1; - GLint dstGreenIndex = -1; - GLint dstBlueIndex = -1; - GLint dstAlphaIndex = -1; - GLint dstLuminanceIndex = -1; - GLint dstIntensityIndex = -1; + GLint dstRedIndex, dstGreenIndex, dstBlueIndex, dstAlphaIndex; + GLint dstLuminanceIndex, dstIntensityIndex; GLint dstComponents = _mesa_components_in_format( dstFormat ); assert(dstComponents > 0); - /* Now determine which color channels we need to produce. - * And determine the dest index (offset) within each color tuple. - */ - switch (dstFormat) { - case GL_ALPHA: - dstAlphaIndex = 0; - break; - case GL_LUMINANCE: - dstLuminanceIndex = 0; - break; - case GL_LUMINANCE_ALPHA: - dstLuminanceIndex = 0; - dstAlphaIndex = 1; - break; - case GL_INTENSITY: - dstIntensityIndex = 0; - break; - case GL_RED: - dstRedIndex = 0; - break; - case GL_RG: - dstRedIndex = 0; - dstGreenIndex = 1; - break; - case GL_RGB: - dstRedIndex = 0; - dstGreenIndex = 1; - dstBlueIndex = 2; - break; - case GL_RGBA: - dstRedIndex = 0; - dstGreenIndex = 1; - dstBlueIndex = 2; - dstAlphaIndex = 3; - break; - default: - _mesa_problem(ctx, - "bad dstFormat in _mesa_unpack_color_span_uint()"); - return; - } + get_component_indexes(dstFormat, &dstRedIndex, &dstGreenIndex, + &dstBlueIndex, &dstAlphaIndex, &dstLuminanceIndex, + &dstIntensityIndex); /* Now pack values in the requested dest format */ if (dstRedIndex >= 0) { |