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glcolorconvert: Fix YUY2 and UYVY support with luminance_alpha

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https://bugzilla.gnome.org/show_bug.cgi?id=730666
This commit is contained in:
Nicolas Dufresne 2014-05-23 23:02:32 -04:00 committed by Tim-Philipp Müller
parent 146c666ba2
commit 73c73470a0
1 changed files with 18 additions and 13 deletions
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31
gst-libs/gst/gl/gstglcolorconvert.c
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@ -297,16 +297,16 @@ static const gchar frag_YUY2_UYVY_to_RGB[] =
" vec3 yuv;\n"
" vec4 uv_texel;\n"
" float r, g, b, a;\n"
" float dx = 1.0 / width;\n"
" float dx1 = -1.0 / width;\n"
" float dx2 = 0.0;\n"
" yuv.x = texture2D(Ytex, v_texcoord * tex_scale0).%c;\n"
" float inorder = mod (v_texcoord.x * width, 2.0);"
" if (inorder < 1.0) {"
" uv_texel.rg = texture2D(Ytex, v_texcoord * tex_scale0).rg;"
" uv_texel.ba = texture2D(Ytex, v_texcoord * tex_scale0 + dx).rg;"
" } else {"
" uv_texel.rg = texture2D(Ytex, v_texcoord * tex_scale0 - dx).rg;"
" uv_texel.ba = texture2D(Ytex, v_texcoord * tex_scale0).rg;"
" }"
" float inorder = mod (v_texcoord.x * width, 2.0);\n"
" if (inorder < 1.0) {\n"
" dx2 = -dx1;\n"
" dx1 = 0.0;\n"
" }\n"
" uv_texel.rg = texture2D(Ytex, v_texcoord * tex_scale0 + dx1).r%c;\n"
" uv_texel.ba = texture2D(Ytex, v_texcoord * tex_scale0 + dx2).r%c;\n"
" yuv.yz = uv_texel.%c%c;\n"
" yuv += offset;\n"
" r = dot(yuv, coeff1);\n"
@ -732,11 +732,15 @@ _YUV_to_RGB (GstGLColorConvert * convert)
info->shader_tex_names[2] = "Utex";
break;
case GST_VIDEO_FORMAT_YUY2:
info->frag_prog = g_strdup_printf (frag_YUY2_UYVY_to_RGB, 'r', 'g', 'a',
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
{
char uv_val = texture_rg ? 'g' : 'a';
info->frag_prog = g_strdup_printf (frag_YUY2_UYVY_to_RGB, 'r', uv_val,
uv_val, 'g', 'a', pixel_order[0], pixel_order[1], pixel_order[2],
pixel_order[3]);
info->in_n_textures = 1;
info->shader_tex_names[0] = "Ytex";
break;
}
case GST_VIDEO_FORMAT_NV12:
{
char val2 = texture_rg ? 'g' : 'a';
@ -760,8 +764,9 @@ _YUV_to_RGB (GstGLColorConvert * convert)
case GST_VIDEO_FORMAT_UYVY:
{
char y_val = texture_rg ? 'g' : 'a';
info->frag_prog = g_strdup_printf (frag_YUY2_UYVY_to_RGB, y_val, 'r', 'b',
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
info->frag_prog = g_strdup_printf (frag_YUY2_UYVY_to_RGB, y_val, 'g',
'g', 'r', 'b', pixel_order[0], pixel_order[1], pixel_order[2],
pixel_order[3]);
info->in_n_textures = 1;
info->shader_tex_names[0] = "Ytex";
break;