mirror of
https://github.com/mpv-player/mpv
synced 2025-01-11 17:39:38 +00:00
vo_opengl: clean up rendering path
Shuffle the special cases around so that it looks cleaner. The result should be equivalent to the code before.
This commit is contained in:
wm4
parent
fd2f40762f
commit
cc00b3ff36
@ -1416,49 +1416,87 @@ static void change_dither_trafo(struct gl_video *p)
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gl->UseProgram(0);
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}
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static void render_to_fbo(struct gl_video *p, struct fbotex *fbo,
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int x, int y, int w, int h, int tex_w, int tex_h)
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{
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GL *gl = p->gl;
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gl->Viewport(fbo->vp_x, fbo->vp_y, fbo->vp_w, fbo->vp_h);
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gl->BindFramebuffer(GL_FRAMEBUFFER, fbo->fbo);
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struct vertex vb[VERTICES_PER_QUAD];
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write_quad(vb, -1, -1, 1, 1,
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x, y, x + w, y + h,
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tex_w, tex_h,
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NULL, p->gl_target, false);
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draw_triangles(p, vb, VERTICES_PER_QUAD);
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gl->BindFramebuffer(GL_FRAMEBUFFER, 0);
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gl->Viewport(p->vp_x, p->vp_y, p->vp_w, p->vp_h);
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}
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struct pass {
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// Not necessarily a FBO; we just abuse this struct because it's convenient.
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// It specifies the source texture/sub-rectangle for the next pass.
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struct fbotex f;
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// If true, render source (f) to dst, instead of the full dest. fbo viewport
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bool use_dst;
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struct mp_rect dst;
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bool flip;
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bool render_stereo;
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};
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// *chain contains the source, and is overwritten with a copy of the result
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static void handle_pass(struct gl_video *p, struct fbotex *chain,
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// fbo is used as destination texture/render target.
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static void handle_pass(struct gl_video *p, struct pass *chain,
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struct fbotex *fbo, GLuint program)
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{
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struct vertex vb[VERTICES_PER_QUAD];
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GL *gl = p->gl;
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if (!program)
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return;
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gl->BindTexture(p->gl_target, chain->texture);
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gl->BindTexture(p->gl_target, chain->f.texture);
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gl->UseProgram(program);
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render_to_fbo(p, fbo, chain->vp_x, chain->vp_y,
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chain->vp_w, chain->vp_h,
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chain->tex_w, chain->tex_h);
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*chain = *fbo;
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gl->Viewport(fbo->vp_x, fbo->vp_y, fbo->vp_w, fbo->vp_h);
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gl->BindFramebuffer(GL_FRAMEBUFFER, fbo->fbo);
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int tex_w = chain->f.tex_w;
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int tex_h = chain->f.tex_h;
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struct mp_rect src = {
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.x0 = chain->f.vp_x,
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.y0 = chain->f.vp_y,
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.x1 = chain->f.vp_x + chain->f.vp_w,
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.y1 = chain->f.vp_y + chain->f.vp_h,
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};
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struct mp_rect dst = {-1, -1, 1, 1};
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if (chain->use_dst)
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dst = chain->dst;
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if (chain->render_stereo && p->opts.stereo_mode) {
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int w = src.x1 - src.x0;
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int imgw = p->image_w;
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glEnable3DLeft(gl, p->opts.stereo_mode);
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write_quad(vb,
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dst.x0, dst.y0, dst.x1, dst.y1,
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src.x0 / 2, src.y0,
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src.x0 / 2 + w / 2, src.y1,
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tex_w, tex_h, NULL, p->gl_target, chain->flip);
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draw_triangles(p, vb, VERTICES_PER_QUAD);
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glEnable3DRight(gl, p->opts.stereo_mode);
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write_quad(vb,
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dst.x0, dst.y0, dst.x1, dst.y1,
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src.x0 / 2 + imgw / 2, src.y0,
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src.x0 / 2 + imgw / 2 + w / 2, src.y1,
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tex_w, tex_h, NULL, p->gl_target, chain->flip);
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draw_triangles(p, vb, VERTICES_PER_QUAD);
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glDisable3D(gl, p->opts.stereo_mode);
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} else {
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write_quad(vb,
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dst.x0, dst.y0, dst.x1, dst.y1,
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src.x0, src.y0, src.x1, src.y1,
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tex_w, tex_h, NULL, p->gl_target, chain->flip);
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draw_triangles(p, vb, VERTICES_PER_QUAD);
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}
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*chain = (struct pass){
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.f = *fbo,
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};
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}
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void gl_video_render_frame(struct gl_video *p)
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{
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GL *gl = p->gl;
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struct vertex vb[VERTICES_PER_QUAD];
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struct video_image *vimg = &p->image;
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bool is_flipped = vimg->image_flipped;
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if (p->opts.temporal_dither)
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change_dither_trafo(p);
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@ -1481,12 +1519,14 @@ void gl_video_render_frame(struct gl_video *p)
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GLuint imgtex[4] = {0};
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set_image_textures(p, vimg, imgtex);
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struct fbotex chain = {
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.vp_w = p->image_w,
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.vp_h = p->image_h,
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.tex_w = p->texture_w,
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.tex_h = p->texture_h,
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.texture = imgtex[0],
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struct pass chain = {
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.f = {
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.vp_w = p->image_w,
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.vp_h = p->image_h,
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.tex_w = p->texture_w,
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.tex_h = p->texture_h,
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.texture = imgtex[0],
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},
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};
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handle_pass(p, &chain, &p->indirect_fbo, p->indirect_program);
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@ -1494,58 +1534,36 @@ void gl_video_render_frame(struct gl_video *p)
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// Clip to visible height so that separate scaling scales the visible part
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// only (and the target FBO texture can have a bounded size).
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// Don't clamp width; too hard to get correct final scaling on l/r borders.
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chain.vp_y = p->src_rect.y0,
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chain.vp_h = p->src_rect.y1 - p->src_rect.y0,
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chain.f.vp_y = p->src_rect.y0;
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chain.f.vp_h = p->src_rect.y1 - p->src_rect.y0;
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handle_pass(p, &chain, &p->scale_sep_fbo, p->scale_sep_program);
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gl->BindTexture(p->gl_target, chain.texture);
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gl->UseProgram(p->final_program);
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struct fbotex screen = {
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.vp_x = p->vp_x,
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.vp_y = p->vp_y,
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.vp_w = p->vp_w,
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.vp_h = p->vp_h,
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.texture = 0, //makes BindFramebuffer select the screen backbuffer
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};
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struct mp_rect src = {p->src_rect.x0, chain.vp_y,
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p->src_rect.x1, chain.vp_y + chain.vp_h};
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int src_texw = chain.tex_w;
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int src_texh = chain.tex_h;
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// For Y direction, use the whole source viewport; it has been fit to the
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// correct origin/height before.
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// For X direction, assume the texture wasn't scaled yet, so we can
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// select the correct portion, which will be scaled to screen.
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chain.f.vp_x = p->src_rect.x0;
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chain.f.vp_w = p->src_rect.x1 - p->src_rect.x0;
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if (p->opts.stereo_mode) {
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int w = src.x1 - src.x0;
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int imgw = p->image_w;
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chain.use_dst = true;
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chain.dst = p->dst_rect;
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chain.flip = vimg->image_flipped;
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chain.render_stereo = true;
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glEnable3DLeft(gl, p->opts.stereo_mode);
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write_quad(vb,
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p->dst_rect.x0, p->dst_rect.y0,
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p->dst_rect.x1, p->dst_rect.y1,
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src.x0 / 2, src.y0,
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src.x0 / 2 + w / 2, src.y1,
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src_texw, src_texh,
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NULL, p->gl_target, is_flipped);
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draw_triangles(p, vb, VERTICES_PER_QUAD);
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glEnable3DRight(gl, p->opts.stereo_mode);
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write_quad(vb,
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p->dst_rect.x0, p->dst_rect.y0,
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p->dst_rect.x1, p->dst_rect.y1,
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src.x0 / 2 + imgw / 2, src.y0,
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src.x0 / 2 + imgw / 2 + w / 2, src.y1,
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src_texw, src_texh,
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NULL, p->gl_target, is_flipped);
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draw_triangles(p, vb, VERTICES_PER_QUAD);
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glDisable3D(gl, p->opts.stereo_mode);
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} else {
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write_quad(vb,
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p->dst_rect.x0, p->dst_rect.y0,
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p->dst_rect.x1, p->dst_rect.y1,
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src.x0, src.y0,
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src.x1, src.y1,
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src_texw, src_texh,
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NULL, p->gl_target, is_flipped);
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draw_triangles(p, vb, VERTICES_PER_QUAD);
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}
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handle_pass(p, &chain, &screen, p->final_program);
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gl->UseProgram(0);
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gl->BindFramebuffer(GL_FRAMEBUFFER, 0);
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gl->Viewport(p->vp_x, p->vp_y, p->vp_w, p->vp_h);
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unset_image_textures(p);
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