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support for premultipled alpha

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This commit is contained in:
itsmattkc
2019-01-26 21:49:18 +11:00
parent b0e1eb2ea4
commit 97a28ab54a
17 changed files with 392 additions and 254 deletions
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effects/internal/transformeffect.cpp
+8 -27
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@@ -205,11 +205,11 @@ void TransformEffect::toggle_uniform_scale(bool enabled) {
void TransformEffect::process_coords(double timecode, GLTextureCoords& coords, int) {
// position
glTranslatef(position_x->get_double_value(timecode)-(parent_clip->sequence->width/2), position_y->get_double_value(timecode)-(parent_clip->sequence->height/2), 0);
glTranslated(position_x->get_double_value(timecode)-(parent_clip->sequence->width/2), position_y->get_double_value(timecode)-(parent_clip->sequence->height/2), 0);
// anchor point
int anchor_x_offset = (anchor_x_box->get_double_value(timecode));
int anchor_y_offset = (anchor_y_box->get_double_value(timecode));
int anchor_x_offset = qRound(anchor_x_box->get_double_value(timecode));
int anchor_y_offset = qRound(anchor_y_box->get_double_value(timecode));
coords.vertexTopLeftX -= anchor_x_offset;
coords.vertexTopRightX -= anchor_x_offset;
coords.vertexBottomLeftX -= anchor_x_offset;
@@ -220,37 +220,18 @@ void TransformEffect::process_coords(double timecode, GLTextureCoords& coords, i
coords.vertexBottomRightY -= anchor_y_offset;
// rotation
glRotatef(rotation->get_double_value(timecode), 0, 0, 1);
glRotated(rotation->get_double_value(timecode), 0, 0, 1);
// scale
float sx = scale_x->get_double_value(timecode)*0.01;
float sy = (uniform_scale_field->get_bool_value(timecode)) ? sx : scale_y->get_double_value(timecode)*0.01;
glScalef(sx, sy, 1);
double sx = scale_x->get_double_value(timecode)*0.01;
double sy = (uniform_scale_field->get_bool_value(timecode)) ? sx : scale_y->get_double_value(timecode)*0.01;
glScaled(sx, sy, 1);
// blend mode
coords.blendmode = blend_mode_box->get_combo_data(timecode).toInt();
/*switch (blend_mode_box->get_combo_data(timecode).toInt()) {
case BLEND_MODE_NORMAL:
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
break;
case BLEND_MODE_OVERLAY:
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
break;
case BLEND_MODE_SCREEN:
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_COLOR);
break;
case BLEND_MODE_MULTIPLY:
glBlendFunc(GL_DST_COLOR, GL_ONE_MINUS_SRC_ALPHA);
break;
default:
qCritical() << "Invalid blend mode. This is a bug - please contact developers";
}*/
// opacity
coords.opacity *= opacity->get_double_value(timecode)*0.01;
/*float color[4];
glGetFloatv(GL_CURRENT_COLOR, color);
glColor4f(1.0, 1.0, 1.0, color[3]*(opacity->get_double_value(timecode)*0.01));*/
coords.opacity *= float(opacity->get_double_value(timecode)*0.01);
}
void TransformEffect::gizmo_draw(double, GLTextureCoords& coords) {