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ffmpeg: refactor so swscale is an optional step before glsl

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This commit is contained in:
itsmattkc
2022-11-16 17:00:45 -08:00
parent 87d9afb7e1
commit 6b6f164c44
5 changed files with 306 additions and 450 deletions
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app/shaders/deinterlace2.frag
+21
View File
@@ -0,0 +1,21 @@
uniform sampler2D ove_maintex;
uniform int interlacing;
uniform int pixel_height;
in vec2 ove_texcoord;
out vec4 frag_color;
void main() {
vec2 real_coord = ove_texcoord;
if (interlacing != 0) {
float field_height = float(pixel_height / 2);
real_coord.y = floor(real_coord.y * field_height) + 0.25;
if (interlacing == 2) {
real_coord.y += 0.5;
}
real_coord.y /= field_height;
}
frag_color = texture(ove_maintex, real_coord);
}
app/shaders/yuv2rgb.frag
+3 -16
View File
@@ -10,29 +10,16 @@ uniform float yuv_cgu;
uniform float yuv_cgv;
uniform float yuv_cbu;
uniform int interlacing;
uniform int pixel_height;
in vec2 ove_texcoord;
out vec4 frag_color;
void main()
{
vec2 real_coord = ove_texcoord;
if (interlacing != 0) {
float field_height = float(pixel_height / 2);
real_coord.y = floor(real_coord.y * field_height) + 0.25;
if (interlacing == 2) {
real_coord.y += 0.5;
}
real_coord.y /= field_height;
}
// Sample YUV planes
vec3 yuv;
yuv.r = texture(y_channel, real_coord).r;
yuv.g = texture(u_channel, real_coord).r;
yuv.b = texture(v_channel, real_coord).r;
yuv.r = texture(y_channel, ove_texcoord).r;
yuv.g = texture(u_channel, ove_texcoord).r;
yuv.b = texture(v_channel, ove_texcoord).r;
// Pixels will have come in aligned to 16-bit regardless of their actual bit depth, so they must
// be scaled as if they were actually 16-bit