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gl/colorconvert: remove scratch texture for YUY2/UYVY

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We can get all our data from the one RG/LA texture with some shader magic.

https://bugzilla.gnome.org/show_bug.cgi?id=728890
This commit is contained in:
Matthew Waters 2014-05-23 11:01:06 +10:00
parent 9a0129a0e4
commit 26e9517355
1 changed files with 12 additions and 41 deletions
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53
gst-libs/gst/gl/gstglcolorconvert.c
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@ -291,12 +291,23 @@ static const gchar frag_YUY2_UYVY_to_RGB[] =
"uniform vec2 tex_scale0;\n"
"uniform vec2 tex_scale1;\n"
"uniform vec2 tex_scale2;\n"
"uniform float width;\n"
YUV_TO_RGB_COEFFICIENTS
"void main(void) {\n"
" vec3 yuv;\n"
" vec4 uv_texel;\n"
" float r, g, b, a;\n"
" float dx = 1.0 / width;\n"
" yuv.x = texture2D(Ytex, v_texcoord * tex_scale0).%c;\n"
" yuv.yz = texture2D(UVtex, v_texcoord * tex_scale1).%c%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;"
" }"
" yuv.yz = uv_texel.%c%c;\n"
" yuv += offset;\n"
" r = dot(yuv, coeff1);\n"
" g = dot(yuv, coeff2);\n"
@ -364,7 +375,6 @@ struct _GstGLColorConvertPrivate
struct ConvertInfo convert_info;
GstGLMemory *scratch;
GstGLMemory *out_temp[GST_VIDEO_MAX_PLANES];
};
@ -464,11 +474,6 @@ gst_gl_color_convert_reset (GstGLColorConvert * convert)
gst_object_unref (convert->shader);
convert->shader = NULL;
}
if (convert->priv->scratch) {
gst_memory_unref ((GstMemory *) convert->priv->scratch);
convert->priv->scratch = NULL;
}
}
static void
@ -731,13 +736,6 @@ _YUV_to_RGB (GstGLColorConvert * convert)
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
info->in_n_textures = 1;
info->shader_tex_names[0] = "Ytex";
info->shader_tex_names[1] = "UVtex";
convert->priv->scratch =
(GstGLMemory *) gst_gl_memory_alloc (convert->context,
GST_VIDEO_GL_TEXTURE_TYPE_RGBA,
GST_VIDEO_INFO_COMP_WIDTH (&convert->in_info, 1),
GST_VIDEO_INFO_HEIGHT (&convert->in_info),
GST_VIDEO_INFO_PLANE_STRIDE (&convert->in_info, 0));
break;
case GST_VIDEO_FORMAT_NV12:
{
@ -766,13 +764,6 @@ _YUV_to_RGB (GstGLColorConvert * convert)
pixel_order[0], pixel_order[1], pixel_order[2], pixel_order[3]);
info->in_n_textures = 1;
info->shader_tex_names[0] = "Ytex";
info->shader_tex_names[1] = "UVtex";
convert->priv->scratch =
(GstGLMemory *) gst_gl_memory_alloc (convert->context,
GST_VIDEO_GL_TEXTURE_TYPE_RGBA,
GST_VIDEO_INFO_COMP_WIDTH (&convert->in_info, 1),
GST_VIDEO_INFO_HEIGHT (&convert->in_info),
GST_VIDEO_INFO_PLANE_STRIDE (&convert->in_info, 0));
break;
}
default:
@ -1258,14 +1249,6 @@ _do_convert_draw (GstGLContext * context, GstGLColorConvert * convert)
out_width = GST_VIDEO_INFO_WIDTH (&convert->out_info);
out_height = GST_VIDEO_INFO_HEIGHT (&convert->out_info);
/* two sources of the same data */
if (convert->priv->scratch) {
gst_gl_memory_copy_into_texture (convert->in_tex[0],
convert->priv->scratch->tex_id, convert->priv->scratch->tex_type,
convert->priv->scratch->width, convert->priv->scratch->height,
convert->priv->scratch->stride, TRUE);
}
gl->BindFramebuffer (GL_FRAMEBUFFER, convert->fbo);
/* attach the texture to the FBO to renderer to */
@ -1299,18 +1282,6 @@ _do_convert_draw (GstGLContext * context, GstGLColorConvert * convert)
gl->EnableVertexAttribArray (convert->shader_attr_position_loc);
gl->EnableVertexAttribArray (convert->shader_attr_texture_loc);
if (convert->priv->scratch) {
gchar *scale_name = g_strdup_printf ("tex_scale%u", c_info->in_n_textures);
gl->ActiveTexture (GL_TEXTURE0 + c_info->in_n_textures);
gl->BindTexture (GL_TEXTURE_2D, convert->priv->scratch->tex_id);
gst_gl_shader_set_uniform_2fv (convert->shader, scale_name, 1,
convert->priv->scratch->tex_scaling);
g_free (scale_name);
}
for (i = c_info->in_n_textures - 1; i >= 0; i--) {
gchar *scale_name = g_strdup_printf ("tex_scale%u", i);