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blending seems mostly complete

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This commit is contained in:
itsmattkc
2019-01-28 15:04:48 +11:00
parent deb875eede
commit bcc772e957
4 changed files with 50 additions and 25 deletions
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ui/renderfunctions.cpp
+30 -7
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@@ -299,9 +299,14 @@ GLuint compose_sequence(ComposeSequenceParams &params) {
// prepare framebuffers for backend drawing operations
if (c->fbo == nullptr) {
c->fbo = new QOpenGLFramebufferObject* [2];
c->fbo[0] = new QOpenGLFramebufferObject(video_width, video_height);
c->fbo[1] = new QOpenGLFramebufferObject(video_width, video_height);
// create 3 fbos for nested sequences, 2 for most clips
int fbo_count = (c->media != nullptr && c->media->get_type() == MEDIA_TYPE_SEQUENCE) ? 3 : 2;
c->fbo = new QOpenGLFramebufferObject* [fbo_count];
for (int j=0;j<fbo_count;j++) {
c->fbo[j] = new QOpenGLFramebufferObject(video_width, video_height);
}
}
// if clip should actually be shown on screen in this frame
@@ -419,8 +424,22 @@ GLuint compose_sequence(ComposeSequenceParams &params) {
// use clip textures for nested sequences, otherwise use main frame buffers
GLuint back_buffer_1;
GLuint backend_tex_1;
GLuint backend_tex_2;
if (params.nests.size() > 0) {
back_buffer_1 = params.nests.last()->fbo[1]->handle();
backend_tex_1 = params.nests.last()->fbo[1]->texture();
backend_tex_2 = params.nests.last()->fbo[2]->texture();
} else {
back_buffer_1 = params.backend_buffer1;
backend_tex_1 = params.backend_attachment1;
backend_tex_2 = params.backend_attachment2;
}
// render a backbuffer
params.ctx->functions()->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, params.backend_buffer1);
params.ctx->functions()->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, back_buffer_1);
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
@@ -466,7 +485,11 @@ GLuint compose_sequence(ComposeSequenceParams &params) {
// copy front buffer to back buffer
draw_clip(params.ctx, params.backend_buffer2, params.main_attachment, true);
if (params.nests.size() > 0) {
draw_clip(params.ctx, params.nests.last()->fbo[2]->handle(), params.nests.last()->fbo[0]->texture(), true);
} else {
draw_clip(params.ctx, params.backend_buffer2, params.main_attachment, true);
}
@@ -479,11 +502,11 @@ GLuint compose_sequence(ComposeSequenceParams &params) {
// load background texture into texture unit 0
params.ctx->functions()->glActiveTexture(GL_TEXTURE0 + 0); // Texture unit 0
params.ctx->functions()->glBindTexture(GL_TEXTURE_2D, params.backend_attachment2);
params.ctx->functions()->glBindTexture(GL_TEXTURE_2D, backend_tex_2);
// load foreground texture into texture unit 1
params.ctx->functions()->glActiveTexture(GL_TEXTURE0 + 1); // Texture unit 1
params.ctx->functions()->glBindTexture(GL_TEXTURE_2D, params.backend_attachment1);
params.ctx->functions()->glBindTexture(GL_TEXTURE_2D, backend_tex_1);
// bind and configure blending mode shader
params.blend_mode_program->bind();